diff --git a/.gitignore b/.gitignore
index a45cc0ad87a9d907f5e853ea09ad6897294e8973..e7df3e95b085308bbdfa1ab0861f2a4cb8d6a331 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,8 @@ out/
 .project
 .settings
 bin/
-.myeclipse
\ No newline at end of file
+.myeclipse
+application-local.properties
+# jrebel
+rebel.xml
+.rebel.xml.bak
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 5e73559d9b562d9273d89f37bb23a2281a3d2238..5375958df0f220c9717f0369995d6e44027dc733 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.spiderflow</groupId>
 	<artifactId>spider-flow</artifactId>
-	<version>0.5.0</version>
+	<version>0.5.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>spider-flow</name>
 	<url>https://gitee.com/jmxd/spider-flow</url>
@@ -177,4 +177,36 @@
 		<module>spider-flow-core</module>
 		<module>spider-flow-web</module>
 	</modules>
+
+	<build>
+		<pluginManagement>
+			<plugins>
+
+			</plugins>
+		</pluginManagement>
+		<plugins>
+			<!--打包时跳过junit测试-->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<configuration>
+					<skipTests>true</skipTests>
+				</configuration>
+			</plugin>
+			<!-- https://mvnrepository.com/artifact/org.codehaus.mojo/versions-maven-plugin -->
+			<!-- 统一调整版本
+				mvn versions:set -DnewVersion=新版本号
+				mvn versions:update-child-modules(有需要的话)
+				mvn version:commit(有需要的话,主要用于自动生成pom备份文件时)
+				也可在 idea IDE 的Maven双击 plugins 下的 versions:set 然后输入新版本号
+			-->
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>versions-maven-plugin</artifactId>
+				<configuration>
+					<generateBackupPoms>false</generateBackupPoms>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spider-flow-api/pom.xml b/spider-flow-api/pom.xml
index 9fcab72d4691a56b3fdeb3b2096dc8db1ef21802..6db2caadce2356c02922dc2a11915d3e96fa4b84 100644
--- a/spider-flow-api/pom.xml
+++ b/spider-flow-api/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.spiderflow</groupId>
 		<artifactId>spider-flow</artifactId>
-		<version>0.5.0</version>
+		<version>0.5.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>spider-flow-api</artifactId>
 	<name>spider-flow-api</name>
@@ -12,4 +12,22 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
+
+	<build>
+		<plugins>
+			<!-- Source attach plugin -->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spider-flow-core/pom.xml b/spider-flow-core/pom.xml
index 4bd8a4b209244856a4e472389b3c40e5326018ac..bfe94949c8caba0e7753aad40bcfd626341b3e08 100644
--- a/spider-flow-core/pom.xml
+++ b/spider-flow-core/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.spiderflow</groupId>
 		<artifactId>spider-flow</artifactId>
-		<version>0.5.0</version>
+		<version>0.5.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>spider-flow-core</artifactId>
 	<name>spider-flow-core</name>
@@ -18,4 +18,22 @@
 			<artifactId>spider-flow-api</artifactId>
 		</dependency>
 	</dependencies>
+
+	<build>
+		<plugins>
+			<!-- Source attach plugin -->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spider-flow-core/src/main/java/org/spiderflow/core/executor/function/UrlFunctionExecutor.java b/spider-flow-core/src/main/java/org/spiderflow/core/executor/function/UrlFunctionExecutor.java
index 48da2073ea144acfcdfb79d78eea55b658d522f0..d3bf108cbfc66811aa97b51dc90ae6e8840b9294 100644
--- a/spider-flow-core/src/main/java/org/spiderflow/core/executor/function/UrlFunctionExecutor.java
+++ b/spider-flow-core/src/main/java/org/spiderflow/core/executor/function/UrlFunctionExecutor.java
@@ -1,6 +1,8 @@
 package org.spiderflow.core.executor.function;
 
 import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URL;
 import java.net.URLDecoder;
 import java.net.URLEncoder;
 import java.nio.charset.Charset;
@@ -10,6 +12,7 @@ import java.util.Map;
 import org.apache.commons.lang3.StringUtils;
 import org.spiderflow.annotation.Comment;
 import org.spiderflow.annotation.Example;
+import org.spiderflow.annotation.Return;
 import org.spiderflow.executor.FunctionExecutor;
 import org.springframework.stereotype.Component;
 
@@ -92,4 +95,23 @@ public class UrlFunctionExecutor implements FunctionExecutor{
 			return null;
 		}
 	}
+
+	@Comment("url相对地址转绝对地址")
+	@Example("${url.absolute('http://www.example.com/abc/index.html','./abs.html')}")
+	@Return({String.class})
+	public static String absolute(String baseUrl, String relativeUrl) {
+		String result = null;
+		try {
+			URI baseUri = new URI(baseUrl);
+			URI absoluteUri = baseUri.resolve(relativeUrl);
+			// 屏蔽转URL,防止在baseUrl时无http(s)://的 protocol 导致的转换错误, 此时也可以处理 ws:// 等其他非http开头的地址
+			/*URL absoluteUrl = absoluteUri.toURL();
+			result = absoluteUrl.toString();*/
+
+			result = absoluteUri.toString();
+		} catch (Exception e) {
+			//
+		}
+		return result;
+	}
 }
diff --git a/spider-flow-web/pom.xml b/spider-flow-web/pom.xml
index 8fb6c9304bfc5a908664dffa48e31c631ac2cce9..810119b1f262601f4b8162724785f08b22c5bc98 100644
--- a/spider-flow-web/pom.xml
+++ b/spider-flow-web/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.spiderflow</groupId>
 		<artifactId>spider-flow</artifactId>
-		<version>0.5.0</version>
+		<version>0.5.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>spider-flow-web</artifactId>
 	<name>spider-flow-web</name>
diff --git a/spider-flow-web/src/main/java/org/spiderflow/logback/SpiderFlowWebSocketAppender.java b/spider-flow-web/src/main/java/org/spiderflow/logback/SpiderFlowWebSocketAppender.java
index 8fde974514ef7edce87250d129ce1fe7ce0ffa52..3503f2e19a2a5d00dfbc498456d2085d36bf887f 100644
--- a/spider-flow-web/src/main/java/org/spiderflow/logback/SpiderFlowWebSocketAppender.java
+++ b/spider-flow-web/src/main/java/org/spiderflow/logback/SpiderFlowWebSocketAppender.java
@@ -21,7 +21,8 @@ public class SpiderFlowWebSocketAppender extends UnsynchronizedAppenderBase<ILog
 		if(context instanceof SpiderWebSocketContext){
 			SpiderWebSocketContext socketContext = (SpiderWebSocketContext) context;
 			Object[] argumentArray = event.getArgumentArray();
-			List<Object> arguments = argumentArray == null ? Collections.emptyList()  : new ArrayList<>(Arrays.asList(argumentArray));
+			// 20210121 Collections.emptyList() 长度不可变, 改为 new , 确保下方 add 能执行
+			List<Object> arguments = argumentArray == null ? new ArrayList<>() : new ArrayList<>(Arrays.asList(argumentArray));
 			ThrowableProxy throwableProxy = (ThrowableProxy) event.getThrowableProxy();
 			if(throwableProxy != null){
 				arguments.add(throwableProxy.getThrowable());