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huangchuwang/jdbc-utils

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run.log 324.79 KB
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huangchuwang 提交于 2023-09-20 19:09 . 教师管理模块
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2023-09-14 10:39:24------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.ExceptionHandlingTest.tryCatchTest(ExceptionHandlingTest.java:32)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/1287712235.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-14 10:39:32------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.ExceptionHandlingTest.tryCatchTest(ExceptionHandlingTest.java:32)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/1165897474.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-14 11:31:49------------------------------------------

测试写入！

2023-09-17 13:59:38------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'limit 0 , 5' at line 1 Query: SELECT * FROM `major` WHERE  limit 0 , 5 Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'limit 0 , 5' at line 1 Query: SELECT * FROM `major` WHERE  limit 0 , 5 Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:143)

	at com.hcw.DatabaseUtilsTest.queryByPageTest(DatabaseUtilsTest.java:106)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/967765295.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-19 09:25:51------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.ExceptionHandlingTest.logException(ExceptionHandlingTest.java:45)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/1551870003.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-19 09:31:18------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:144)

	at com.hcw.ExceptionHandlingTest.queryByPageTest(ExceptionHandlingTest.java:46)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/1917513796.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-19 09:42:50------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:144)

	at com.hcw.dao.impl.CourseDaoImpl.listPage(CourseDaoImpl.java:49)

	at com.hcw.service.impl.CourseServiceImpl.getPagedList(CourseServiceImpl.java:47)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:52)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 09:43:43------------------------------------------

/ by zerojava.lang.ArithmeticException: / by zero

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:144)

	at com.hcw.dao.impl.CourseDaoImpl.getPagedList(CourseDaoImpl.java:49)

	at com.hcw.service.impl.CourseServiceImpl.getPagedList(CourseServiceImpl.java:47)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:52)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 14:16:27------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%��ѧ%'' at line 1 Query: SELECT * FROM `course` like '%��ѧ%' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%��ѧ%'' at line 1 Query: SELECT * FROM `course` like '%��ѧ%' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:145)

	at com.hcw.dao.impl.CourseDaoImpl.getPagedList(CourseDaoImpl.java:49)

	at com.hcw.dao.impl.CourseDaoImpl.listCourseByName(CourseDaoImpl.java:62)

	at com.hcw.service.impl.CourseServiceImpl.getCourseListByName(CourseServiceImpl.java:81)

	at com.hcw.servlet.CourseServlet.searchList(CourseServlet.java:82)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:54)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 14:16:27------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%��ѧ%'' at line 1 Query: SELECT COUNT(cid) FROM `course` like '%��ѧ%' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%��ѧ%'' at line 1 Query: SELECT COUNT(cid) FROM `course` like '%��ѧ%' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryCount(DatabaseUtils.java:166)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:72)

	at com.hcw.service.impl.CourseServiceImpl.getCountByName(CourseServiceImpl.java:59)

	at com.hcw.servlet.CourseServlet.searchList(CourseServlet.java:83)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:54)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 14:16:28------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%%'' at line 1 Query: SELECT * FROM `course` like '%%' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%%'' at line 1 Query: SELECT * FROM `course` like '%%' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryByPage(DatabaseUtils.java:145)

	at com.hcw.dao.impl.CourseDaoImpl.getPagedList(CourseDaoImpl.java:49)

	at com.hcw.dao.impl.CourseDaoImpl.getCourseListByName(CourseDaoImpl.java:62)

	at com.hcw.service.impl.CourseServiceImpl.getCourseListByName(CourseServiceImpl.java:81)

	at com.hcw.servlet.CourseServlet.searchList(CourseServlet.java:82)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:54)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 14:16:28------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%%'' at line 1 Query: SELECT COUNT(cid) FROM `course` like '%%' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like '%%'' at line 1 Query: SELECT COUNT(cid) FROM `course` like '%%' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryCount(DatabaseUtils.java:166)

	at com.hcw.dao.impl.CourseDaoImpl.getCountByName(CourseDaoImpl.java:72)

	at com.hcw.service.impl.CourseServiceImpl.getCountByName(CourseServiceImpl.java:59)

	at com.hcw.servlet.CourseServlet.searchList(CourseServlet.java:83)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:54)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-19 16:19:37------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.Tools.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:124)

	at com.hcw.DatabaseUtilsTest.listByWhereTest(DatabaseUtilsTest.java:83)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/967765295.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-19 16:39:59------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:124)

	at com.hcw.DatabaseUtilsTest.listByWhereTest(DatabaseUtilsTest.java:83)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/1917513796.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-20 09:42:24------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Password = '123456'' at line 1 Query: SELECT * FROM `t_user` WHERE UserName = '牛牛牛2' AND  WHERE Password = '123456' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.DatabaseUtilsTest.listByWhereTest(DatabaseUtilsTest.java:83)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:134)

	at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:597)

	at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)

	at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)

	at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:816)

	at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)

	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)

	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)

	at org.testng.TestRunner$$Lambda$47/967765295.accept(Unknown Source)

	at java.util.ArrayList.forEach(ArrayList.java:1249)

	at org.testng.TestRunner.privateRun(TestRunner.java:766)

	at org.testng.TestRunner.run(TestRunner.java:587)

	at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)

	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)

	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)

	at org.testng.SuiteRunner.run(SuiteRunner.java:286)

	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)

	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)

	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1187)

	at org.testng.TestNG.runSuitesLocally(TestNG.java:1109)

	at org.testng.TestNG.runSuites(TestNG.java:1039)

	at org.testng.TestNG.run(TestNG.java:1007)

	at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)

	at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)



2023-09-20 11:18:41------------------------------------------

Field 'cid' doesn't have a default value Query: insert into `course`(type,belongcoll,belongpro) values('','ѧԺ','') Parameters: []java.sql.SQLException: Field 'cid' doesn't have a default value Query: insert into `course`(type,belongcoll,belongpro) values('','ѧԺ','') Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:491)

	at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:421)

	at com.hcw.utils.DatabaseUtils.insert(DatabaseUtils.java:51)

	at com.hcw.utils.BaseDao.insert(BaseDao.java:24)

	at com.hcw.dao.impl.CourseDaoImpl.saveCourse(CourseDaoImpl.java:36)

	at com.hcw.service.impl.CourseServiceImpl.saveCourse(CourseServiceImpl.java:35)

	at com.hcw.servlet.CourseServlet.addCourse(CourseServlet.java:137)

	at com.hcw.servlet.CourseServlet.doPost(CourseServlet.java:106)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 11:35:38------------------------------------------

Field 'cid' doesn't have a default value Query: insert into `course`(belongcoll,belongpro) values('ѧԺ','繤') Parameters: []java.sql.SQLException: Field 'cid' doesn't have a default value Query: insert into `course`(belongcoll,belongpro) values('ѧԺ','繤') Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:491)

	at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:421)

	at com.hcw.utils.DatabaseUtils.insert(DatabaseUtils.java:51)

	at com.hcw.utils.BaseDao.insert(BaseDao.java:24)

	at com.hcw.dao.impl.CourseDaoImpl.saveCourse(CourseDaoImpl.java:36)

	at com.hcw.service.impl.CourseServiceImpl.saveCourse(CourseServiceImpl.java:35)

	at com.hcw.servlet.CourseServlet.addCourse(CourseServlet.java:137)

	at com.hcw.servlet.CourseServlet.doPost(CourseServlet.java:106)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:07:01------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:07:14------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:07:30------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:08:03------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:11:18------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:11:58------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:14:04------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:14:34------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:15:15------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:15:35------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE apassword = 'admin'' at line 1 Query: SELECT * FROM `admin` WHERE aname = 'admin' AND  WHERE apassword = 'admin' Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByColumnNames(DatabaseUtils.java:125)

	at com.hcw.utils.BaseDao.queryByColumnNames(BaseDao.java:44)

	at com.hcw.dao.impl.AdminDaoImpl.adminLogin(AdminDaoImpl.java:29)

	at com.hcw.service.impl.AdminServiceImpl.adminLogin(AdminServiceImpl.java:25)

	at com.hcw.servlet.AdminServlet.adminLogin(AdminServlet.java:57)

	at com.hcw.servlet.AdminServlet.doPost(AdminServlet.java:33)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:25:32------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:204)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:187)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:25:36------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:69)

	at com.hcw.service.impl.CourseServiceImpl.countByName(CourseServiceImpl.java:58)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:51)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:26:01------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:69)

	at com.hcw.service.impl.CourseServiceImpl.countByName(CourseServiceImpl.java:58)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:51)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 16:26:04------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:69)

	at com.hcw.service.impl.CourseServiceImpl.countByName(CourseServiceImpl.java:58)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:51)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:15:11------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:15:18------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:15:35------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:27:41------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:27:53------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByPage(DatabaseUtils.java:147)

	at com.hcw.dao.impl.TeacherDaoImpl.listPage(TeacherDaoImpl.java:63)

	at com.hcw.service.impl.TeacherServiceImpl.listTeacherByName(TeacherServiceImpl.java:77)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:189)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:27:53------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:190)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:27:55------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByPage(DatabaseUtils.java:147)

	at com.hcw.dao.impl.TeacherDaoImpl.listPage(TeacherDaoImpl.java:63)

	at com.hcw.service.impl.TeacherServiceImpl.listTeacherByName(TeacherServiceImpl.java:77)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:189)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:27:55------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:190)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:28:30------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT * FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryByPage(DatabaseUtils.java:147)

	at com.hcw.dao.impl.TeacherDaoImpl.listPage(TeacherDaoImpl.java:63)

	at com.hcw.service.impl.TeacherServiceImpl.listTeacherByName(TeacherServiceImpl.java:77)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:189)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:28:30------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.searchList(TeacherServlet.java:190)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:158)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:29:08------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:29:39------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:29:47------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:30:22------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:31:49------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:32:16------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:32:27------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:32:50------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:38------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:69)

	at com.hcw.service.impl.CourseServiceImpl.countByName(CourseServiceImpl.java:58)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:51)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:42------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(cid) FROM `course` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.CourseDaoImpl.countByName(CourseDaoImpl.java:69)

	at com.hcw.service.impl.CourseServiceImpl.countByName(CourseServiceImpl.java:58)

	at com.hcw.servlet.CourseServlet.pageList(CourseServlet.java:67)

	at com.hcw.servlet.CourseServlet.doGet(CourseServlet.java:51)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:43------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:46------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:47------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:33:51------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:34:11------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:34:19------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:34:24------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:35:27------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:35:32------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:35:36------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:35:39------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:36:57------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:37:01------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:37:04------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:37:16------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:37:29------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:37:32------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:38:11------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:38:24------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:38:50------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:39:41------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:39:41------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:39:42------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:39:46------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:39:49------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:37------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(sid) FROM `student` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.StudentDaoImpl.countByName(StudentDaoImpl.java:85)

	at com.hcw.service.impl.StudentServiceImpl.countByName(StudentServiceImpl.java:70)

	at com.hcw.servlet.StudentServlet.pageList(StudentServlet.java:206)

	at com.hcw.servlet.StudentServlet.doGet(StudentServlet.java:189)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:38------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:42------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:44------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:50------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:41:54------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:42:00------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:43:24------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:43:34------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:44:05------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:44:42------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:44:43------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:45:02------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:45:58------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:46:33------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:48:15------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 17:48:31------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:41:07------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:41:32------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:45:44------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:46:46------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:48:07------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:48:10------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:49:01------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:49:35------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:49:48------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:51:16------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)



2023-09-20 18:53:25------------------------------------------

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 Query: SELECT COUNT(tid) FROM `teacher` WHERE  Parameters: []

	at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:392)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:351)

	at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:307)

	at com.hcw.utils.DatabaseUtils.queryCount(DatabaseUtils.java:168)

	at com.hcw.dao.impl.TeacherDaoImpl.countByName(TeacherDaoImpl.java:84)

	at com.hcw.service.impl.TeacherServiceImpl.countByName(TeacherServiceImpl.java:90)

	at com.hcw.servlet.TeacherServlet.pageList(TeacherServlet.java:174)

	at com.hcw.servlet.TeacherServlet.doGet(TeacherServlet.java:156)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at com.hcw.filter.EncodingFilter.doFilter(EncodingFilter.java:36)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:745)
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