diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..35410cacdc5e87f985c93a96520f5e11a5c822e4
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/library-management-system.iml b/.idea/library-management-system.iml
new file mode 100644
index 0000000000000000000000000000000000000000..c956989b29ad0767edc6cf3a202545927c3d1e76
--- /dev/null
+++ b/.idea/library-management-system.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..9428175b5d1ab88ea9deb342a0f03ef828915028
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/library-management-system.iml" filepath="$PROJECT_DIR$/.idea/library-management-system.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/php.xml b/.idea/php.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f324872a8ba94b4ec07a8aad82965487b3b15d57
--- /dev/null
+++ b/.idea/php.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MessDetectorOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PHPCSFixerOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PHPCodeSnifferOptionsConfiguration">
+    <option name="highlightLevel" value="WARNING" />
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PhpStanOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PsalmOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..35eb1ddfbbc029bcab630581847471d7f238ec53
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/admin/assort_delete.php b/admin/assort_delete.php
new file mode 100644
index 0000000000000000000000000000000000000000..b8eb18d9b446e0b17a890ba6cd7a801a5f81bf0f
--- /dev/null
+++ b/admin/assort_delete.php
@@ -0,0 +1,11 @@
+<?php
+//用户信息删除实现
+include('../connect.php');
+$id=$_GET['id'];
+$sql="delete from assort where id = $id";
+$rs=mysqli_query($conn,$sql);
+if($rs){
+    alert('删除成功','assort_list.php');
+}else{
+    alert('删除失败','assort_list.php');
+}
\ No newline at end of file
diff --git a/admin/assort_edit.php b/admin/assort_edit.php
new file mode 100644
index 0000000000000000000000000000000000000000..c3a557a2774cf4086856c8d3cc5bb4ea29a17da8
--- /dev/null
+++ b/admin/assort_edit.php
@@ -0,0 +1,52 @@
+<?php
+include ('head.php');
+$id=$_GET['id'];
+$sql="select * from assort where id=$id";
+$rs=mysqli_query($conn,$sql);
+if($rs){
+    $row=mysqli_fetch_assoc($rs);
+}
+?>
+    <div class="layui-body">
+        <!-- 用户管理-修改分类信息 -->
+        <div style="padding: 15px;">
+            <h2>分类管理</h2>
+            <div class="layui-tab layui-tab-brief">
+                <ul class="layui-tab-title">
+                    <li class="layui-this">修改分类</a></li>
+                </ul>
+            </div>
+            <!--创建表单-->
+            <div class="layui-tab-content">
+                <div class="layui-tab-item layui-show">
+                    <div class="layui-row">
+                        <div class="layui-col-md6">
+                            <form class="layui-form" method="post" action="assort_update.php">
+                                <input type="hidden" name="id" value="<?php echo $id; ?>">
+                                <div class="layui-form-item">
+                                    <label class="layui-form-label">分类名称*</label>
+                                    <div class="layui-input-block">
+                                        <input type="text" name="assort_name" required lay-verify="required"
+                                               class="layui-input" value="<?php echo $row['assort_name']?>">
+                                    </div>
+                                </div>
+                                <div class="layui-form-item">
+                                    <label class="layui-form-label">分类说明*</label>
+                                    <div class="layui-input-block">
+                                        <input type="text" name="other" class="layui-input" value="<?php echo $row['other']?>">
+                                    </div>
+                                </div>
+                                <div class="layui-form-item">
+                                    <div class="layui-input-block">
+                                        <input type="submit" class="layui-btn layui-btn-normal" value="立即提交">
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+<?php
+include ('foot.php');
\ No newline at end of file
diff --git a/admin/assort_list.php b/admin/assort_list.php
new file mode 100644
index 0000000000000000000000000000000000000000..c8ac2691f65524cfea603622cc0975dc3d9721a2
--- /dev/null
+++ b/admin/assort_list.php
@@ -0,0 +1,90 @@
+<?php
+include ('head.php');
+?>
+    <div class="layui-body">
+        <!-- 分类管理-分类信息列表-搜索结果 -->
+        <div style="padding:15px;">
+            <h2>分类管理</h2>
+            <div class="layui-tab layui-tab-brief">
+                <ul class="layui-tab-title">
+                    <li class="layui-this">分类列表</a></li>
+                    <li><a href="assort_new.php">新增分类</a></li>
+                </ul>
+            </div>
+            <!--显示表的内容-->
+            <div class="layui-tab-content">
+                <div class="layui-tab-item layui-show">
+                    <div>
+                        <form class="layui-form" method="post" action="assort_list_search.php">
+                            <div class="layui-inline">
+                                <input class="layui-input" name="search" style="width: 350px" placeholder="按分类名称查找">
+                            </div>
+                            <button class="layui-btn layui-btn-normal" type="submit">搜索</button>
+                        </form>
+                    </div>
+                    <script type="text/html" id="toolbar">
+                        <div class="layui-btn-container">
+                            <a class="layui-btn layui-btn-xs layui-btn-normal" lay-event="edit">编辑</a>
+                            <a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="del">删除</a>
+                        </div>
+                    </script>
+                    <table class="layui-table" lay-data="{
+                        height:550,
+                        page:true,
+                        id:'id_table',
+                        toolbar:true
+                    }"
+                           lay-filter="test">
+                        <thead>
+                            <tr>
+                                <td lay-data="{field:'id',sort:true}">ID</td>
+                                <td lay-data="{field:'assort_name'}">分类名称</td>
+                                <td lay-data="{field:'other'}">分类说明</td>
+                                <td lay-data="{field:'',toolbar:'#toolbar',width:100}">操作</td>
+                            </tr>
+                        </thead>
+                        <tbody>
+                        <?php
+                        $sql="select * from assort order by id";
+                        $rs=mysqli_query($conn,$sql);
+                        if($rs){
+                            while ($row=mysqli_fetch_assoc($rs)){
+                                echo '<tr>';
+                                echo '<td>'.$row['id'].'</td>';
+                                echo '<td>'.$row['assort_name'].'</td>';
+                                echo '<td>'.$row['other'].'</td>';
+                                echo '<td></td>';
+                                echo '</tr>';
+                            }
+                        }
+                        ?>
+                        </tbody>
+                    </table>
+                    <script>
+                        layui.use('table',function (){
+                            var table=layui.table;
+                            table.on('tool(test)',function (obj){
+                                var tr=obj.data;
+                                let arr=Object.values(tr);
+                                var eventName= obj.event;
+                                if(eventName=='del')
+                                {
+                                    //删除
+                                    layer.confirm("您确认删除吗？",function (index){
+                                        obj.del();
+                                        layer.close(index);
+                                        window.location.href="assort_delete.php?id="+arr[0];
+                                    })
+                                }else if(eventName=='edit'){
+                                    //x修改
+                                    window.location.href="assort_edit.php?id="+arr[0];
+                                }
+                            });
+                        });
+                    </script>
+                </div>
+            </div>
+        </div>
+    </div>
+<?php
+include ('foot.php');
\ No newline at end of file
diff --git a/admin/assort_list_search.php b/admin/assort_list_search.php
new file mode 100644
index 0000000000000000000000000000000000000000..040fa46528ab89a9cae8d665f7c49ede587ccd42
--- /dev/null
+++ b/admin/assort_list_search.php
@@ -0,0 +1,93 @@
+<?php
+include ('head.php');
+?>
+    <div class="layui-body">
+        <!-- 分类管理-分类信息列表 -->
+        <div style="padding:15px;">
+            <h2>分类管理</h2>
+            <div class="layui-tab layui-tab-brief">
+                <ul class="layui-tab-title">
+                    <li class="layui-this">搜索结果</a></li>
+                </ul>
+            </div>
+            <!--显示表的内容-->
+            <div class="layui-tab-content">
+                <div class="layui-tab-item layui-show">
+                    <div>
+                        <form class="layui-form" method="post" action="assort_list_search.php">
+                            <div class="layui-inline">
+                                <input class="layui-input" name="search" style="width: 350px" placeholder="按分类名称查找">
+                            </div>
+                            <button class="layui-btn layui-btn-normal" type="submit">搜索</button>
+                        </form>
+                    </div>
+                    <script type="text/html" id="toolbar">
+                        <div class="layui-btn-container">
+                            <a class="layui-btn layui-btn-xs layui-btn-normal" lay-event="edit">编辑</a>
+                            <a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="del">删除</a>
+                        </div>
+                    </script>
+                    <table class="layui-table" lay-data="{
+                        height:550,
+                        page:true,
+                        id:'id_table',
+                        toolbar:true
+                    }"
+                           lay-filter="test">
+                        <thead>
+                            <tr>
+                                <td lay-data="{field:'id',sort:true}">ID</td>
+                                <td lay-data="{field:'assort_name'}">分类名称</td>
+                                <td lay-data="{field:'other'}">分类说明</td>
+                                <td lay-data="{field:'',toolbar:'#toolbar',width:100}">操作</td>
+                            </tr>
+                        </thead>
+                        <tbody>
+                        <?php
+                        $assort_name=$_POST['search'];
+                        if($assort_name==''){
+                            alert('搜索框内容不能为空','assort_list.php');
+                        }
+                        $sql="select * from assort where assort_name = '$assort_name' order by id";
+                        $rs=mysqli_query($conn,$sql);
+                        if($rs){
+                            while ($row=mysqli_fetch_assoc($rs)){
+                                echo '<tr>';
+                                echo '<td>'.$row['id'].'</td>';
+                                echo '<td>'.$row['assort_name'].'</td>';
+                                echo '<td>'.$row['other'].'</td>';
+                                echo '<td></td>';
+                                echo '</tr>';
+                            }
+                        }
+                        ?>
+                        </tbody>
+                    </table>
+                    <script>
+                        layui.use('table',function (){
+                            var table=layui.table;
+                            table.on('tool(test)',function (obj){
+                                var tr=obj.data;
+                                let arr=Object.values(tr);
+                                var eventName= obj.event;
+                                if(eventName=='del')
+                                {
+                                    //删除
+                                    layer.confirm("您确认删除吗？",function (index){
+                                        obj.del();
+                                        layer.close(index);
+                                        window.location.href="assort_delete.php?id="+arr[0];
+                                    })
+                                }else if(eventName=='edit'){
+                                    //x修改
+                                    window.location.href="assort_edit.php?id="+arr[0];
+                                }
+                            });
+                        });
+                    </script>
+                </div>
+            </div>
+        </div>
+    </div>
+<?php
+include ('foot.php');
\ No newline at end of file
diff --git a/admin/assort_new.php b/admin/assort_new.php
new file mode 100644
index 0000000000000000000000000000000000000000..87da83cf5247303bada6d465ef919593a8792e82
--- /dev/null
+++ b/admin/assort_new.php
@@ -0,0 +1,47 @@
+<?php
+include('head.php');
+
+?>
+    <div class="layui-body">
+        <!-- 用户管理-新增分类信息 -->
+        <div style="padding: 15px;">
+            <h2>分类管理</h2>
+            <div class="layui-tab layui-tab-brief">
+                <ul class="layui-tab-title">
+                    <li><a href="assort_list.php">分类列表</a></li>
+                    <li class="layui-this">新增分类</a></li>
+                </ul>
+            </div>
+            <!--创建表单-->
+            <div class="layui-tab-content">
+                <div class="layui-tab-item layui-show">
+                    <div class="layui-row">
+                        <div class="layui-col-md6">
+                            <form class="layui-form" method="post" action="assort_save.php">
+                                <div class="layui-form-item">
+                                    <label class="layui-form-label">分类名称*</label>
+                                    <div class="layui-input-block">
+                                        <input type="text" name="assort_name" required lay-verify="required" class="layui-input">
+                                    </div>
+                                </div>
+                                <div class="layui-form-item">
+                                    <label class="layui-form-label">分类说明*</label>
+                                    <div class="layui-input-block">
+                                        <input type="text" name="other" class="layui-input">
+                                    </div>
+                                </div>
+                                <div class="layui-form-item">
+                                    <div class="layui-input-block">
+                                        <input type="submit" class="layui-btn layui-btn-normal" value="立即提交">
+                                        <button type="reset" class="layui-btn layui-btn-primary">重置</button>
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+<?php
+include('/foot.php');
\ No newline at end of file
diff --git a/admin/assort_save.php b/admin/assort_save.php
new file mode 100644
index 0000000000000000000000000000000000000000..a7423f680d514e8e0d673868be5da0bb8ed89132
--- /dev/null
+++ b/admin/assort_save.php
@@ -0,0 +1,31 @@
+<?php
+include ('../connect.php');
+//处理新增图书分类信息的信息保存
+
+$assort_name=$_POST['assort_name'];
+$other=$_POST['other'];
+$real_name=$_POST['real_name'];
+
+//判断图书分类是否重复
+$sql="select * from assort where assort_name='$assort_name'";
+$rs=mysqli_query($conn,$sql);
+if(mysqli_num_rows($rs)>0){
+    $_SESSION['assort_name']=$assort_name;
+    alert('该图书分类已经存在','assort_new.php');
+    exit();
+}
+
+
+//向assort数据表新增一个用户数据
+$sql= "INSERT INTO assort (assort_name,other)
+VALUES ('$assort_name','$other')";
+
+//判断登录是否成功
+$rs=mysqli_query($conn,$sql);
+if($rs){
+    $_SESSION['assort_name']=$assort_name;
+    alert('添加成功','assort_list.php');
+}
+else{
+    alert('添加失败','assort_new.php');
+}
\ No newline at end of file
diff --git a/admin/assort_update.php b/admin/assort_update.php
new file mode 100644
index 0000000000000000000000000000000000000000..f9e7ac44dce25c93dedff69a3e9d345712fe663f
--- /dev/null
+++ b/admin/assort_update.php
@@ -0,0 +1,19 @@
+<?php
+//数据库连接
+//修改分类信息的后端保存
+include ('../connect.php');
+$id=$_POST['id'];
+$assort_name=$_POST['assort_name'];
+$other=$_POST['other'];
+
+
+$sql="update assort
+set assort_name='$assort_name',
+    other='$other'
+    where id= $id";
+$rs=mysqli_query($conn,$sql);
+if($rs){
+    alert('修改成功','assort_list.php');
+}else{
+    alert('修改失败','assort_list.php');
+}
\ No newline at end of file