diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/SystemController.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/SystemController.class
index d83105d..1975873 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/SystemController.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/SystemController.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/views/dashboard.jsp b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/dashboard.jsp
index 7b83560..917085d 100644
--- a/project2/out/artifacts/project2_war_exploded/WEB-INF/views/dashboard.jsp
+++ b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/dashboard.jsp
@@ -40,16 +40,16 @@
                             学生管理
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown1">
-                            <li><a class="dropdown-item" href="student/all">学生信息显示</a></li>
-                            <li><a class="dropdown-item" href="student/queryinfo">学生信息查询</a></li>
-                            <li><a class="dropdown-item" href="student/modstep1">学生信息修改(旧)</a></li>
-                            <li><a class="dropdown-item" href="student/infomodv2">学生信息修改</a></li>
+                            <li><a class="dropdown-item" href="/student/all">学生信息显示</a></li>
+                            <li><a class="dropdown-item" href="/student/queryinfo">学生信息查询</a></li>
+                            <li><a class="dropdown-item" href="/student/modstep1">学生信息修改(旧)</a></li>
+                            <li><a class="dropdown-item" href="/student/infomodv2">学生信息修改</a></li>
                             <li><a class="dropdown-item disabled"><del>自己输入sql语句查</del>(划掉,没做)</a></li>
                             <li>
                                 <hr class="dropdown-divider" />
                             </li>
-                            <li><a class="dropdown-item" href="score/all">成绩查看</a></li>
-                            <li><a class="dropdown-item" href="score/infomodv2">成绩管理</a></li>
+                            <li><a class="dropdown-item" href="/score/all">成绩查看</a></li>
+                            <li><a class="dropdown-item" href="/score/infomodv2">成绩管理</a></li>
                             <li><a class="dropdown-item" href="#">学生成绩管理</a></li>
                             <li>
                                 <hr class="dropdown-divider" />
@@ -73,8 +73,8 @@
                             课程管理
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown3">
-                            <li><a class="dropdown-item" href="course/all">课程查看</a></li>
-                            <li><a class="dropdown-item" href="course/infomodv2">课程管理</a></li>
+                            <li><a class="dropdown-item" href="/course/all">课程查看</a></li>
+                            <li><a class="dropdown-item" href="/course/infomodv2">课程管理</a></li>
                         </ul>
                     </li>
                     <li class="nav-item dropdown">
@@ -84,7 +84,7 @@
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown4">
                             <li><a class="dropdown-item" href="#">个人设定</a></li>
-                            <li><a class="dropdown-item" href="#">系统设定</a></li>
+                            <li><a class="dropdown-item" href="/system/settings">系统设定</a></li>
                             <li><a class="dropdown-item" href="#">用户管理</a></li>
                             <li><a class="dropdown-item" href="#">日志管理</a></li>
                             <li><a class="dropdown-item" href="#">版本信息</a></li>
diff --git a/project2/web/WEB-INF/views/setting.jsp b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/settings.jsp
similarity index 86%
rename from project2/web/WEB-INF/views/setting.jsp
rename to project2/out/artifacts/project2_war_exploded/WEB-INF/views/settings.jsp
index d6f4aeb..1355910 100644
--- a/project2/web/WEB-INF/views/setting.jsp
+++ b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/settings.jsp
@@ -138,7 +138,12 @@
                                 <div class="card-body" style="min-width: 175px">
                                     <div class="row mb-2 mt-4">
                                         <div class="col-lg-2 text-center">
-                                            <button type="button" class="btn btn-secondary btn-lg">清除缓存文件</button>
+                                            <p>缓存文件大小:<mark>${trashSize}</mark></p>
+                                        </div>
+                                    </div>
+                                    <div class="row mb-2 mt-4">
+                                        <div class="col-lg-2 text-center">
+                                            <button type="button" class="btn btn-secondary btn-lg" onclick="cleantrash()" data-mdb-toggle="tooltip" data-mdb-placement="bottom" title="这将会清除工作目录下的垃圾文件">清除缓存文件</button>
                                         </div>
                                     </div>
                                 </div>
@@ -155,35 +160,13 @@
             <div class="modal-content">
                 <div class="modal-header">
                     <h5 class="modal-title" id="exampleModalLabel">
-                        <i class="fas fa-circle-exclamation me-2"></i>错误
+                        <i class="fas fa-circle-info me-2"></i>提示
                     </h5>
                     <button type="button" class="btn-close" data-mdb-dismiss="modal" aria-label="Close"></button>
                 </div>
                 <div class="modal-body">
-                    <c:if test="${not empty errorMessage}">
-                        ${errorMessage}
-                    </c:if>
-                </div>
-                <div class="modal-footer">
-                    <button type="button" class="btn btn-primary" data-mdb-dismiss="modal">OK</button>
-                </div>
-            </div>
-        </div>
-    </div>
-    <!-- Modal -->
-    <div class="modal fade" id="exampleModal2" tabindex="-1" aria-labelledby="exampleModalLabel2"
-         aria-hidden="true">
-        <div class="modal-dialog">
-            <div class="modal-content">
-                <div class="modal-header">
-                    <h5 class="modal-title" id="exampleModalLabel2">
-                        <i class="fas fa-circle-check me-2"></i>成功
-                    </h5>
-                    <button type="button" class="btn-close" data-mdb-dismiss="modal" aria-label="Close"></button>
-                </div>
-                <div class="modal-body">
-                    <c:if test="${not empty successMessage}">
-                        ${successMessage}
+                    <c:if test="${not empty message}">
+                        ${message}
                     </c:if>
                 </div>
                 <div class="modal-footer">
@@ -205,14 +188,14 @@
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
 <script>
     $(document).ready(function () {
-        // 判断模型中是否存在错误信息
-        <c:if test="${not empty errorMessage && errorMessage ne 'null'}">
+        <c:if test="${not empty message && message ne 'null'}">
         $('#exampleModal').modal('show');
         </c:if>
-        <c:if test="${not empty successMessage && successMessage ne 'null'}">
-        $('#exampleModal2').modal('show');
-        </c:if>
     });
+    function cleantrash(){
+        //click this button to clean (/system/clean)
+        window.location.href = "/system/clean";
+    }
 </script>
 </body>
 
diff --git a/project2/src/main/java/cyou/chenx221/controller/SystemController.java b/project2/src/main/java/cyou/chenx221/controller/SystemController.java
index 88709ff..4ea7ee8 100644
--- a/project2/src/main/java/cyou/chenx221/controller/SystemController.java
+++ b/project2/src/main/java/cyou/chenx221/controller/SystemController.java
@@ -1,9 +1,95 @@
 package cyou.chenx221.controller;
 
+import cyou.chenx221.helper.UsernameHelper;
 import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import java.io.File;
+import java.text.DecimalFormat;
 
 @Controller
 @RequestMapping("/system")
 public class SystemController {
+
+    @GetMapping("/settings")
+    public String getSettings(Model model, @ModelAttribute("message") String message) {
+        String username = new UsernameHelper().getCurrentUsername();
+        if (username != null) {
+            model.addAttribute("username", username);
+        }
+        if(message!=null && !message.isEmpty()){
+            model.addAttribute("message", message);
+        }
+        model.addAttribute("trashSize", formatFileSize(getTrashSize()));
+        return "settings";
+    }
+
+    public long getTrashSize() {
+        File directory = new File("file");
+        long size = 0;
+        if (directory.exists() && directory.isDirectory()) {
+            File[] files = directory.listFiles();
+            if (files != null) {
+                for (File file : files) {
+                    if (file.isFile()) {
+                        size += file.length();
+                    }
+                }
+            }
+        }
+        return size;
+    }
+
+    public String formatFileSize(long size) {
+        DecimalFormat decimalFormat = new DecimalFormat("#.##");
+        double kiloByte = size / 1024.0;
+        double megaByte = kiloByte / 1024.0;
+        double gigaByte = megaByte / 1024.0;
+        double teraByte = gigaByte / 1024.0;
+
+        if (teraByte > 1) {
+            return decimalFormat.format(teraByte) + " TB";
+        } else if (gigaByte > 1) {
+            return decimalFormat.format(gigaByte) + " GB";
+        } else if (megaByte > 1) {
+            return decimalFormat.format(megaByte) + " MB";
+        } else if (kiloByte > 1) {
+            return decimalFormat.format(kiloByte) + " KB";
+        } else {
+            return size + " B";
+        }
+    }
+
+    @GetMapping("/clean")
+    public String getClean(RedirectAttributes redirectAttributes) {
+        //todo: clean work path file/*.csv
+        File directory = new File("file");
+
+        // 检查目录是否存在
+        if (directory.exists() && directory.isDirectory()) {
+            // 获取目录中的所有文件
+            File[] files = directory.listFiles();
+
+            // 遍历文件并删除以 ".csv" 结尾的文件
+            if (files != null) {
+                for (File file : files) {
+                    if (file.isFile()) {
+                        if (file.delete()) {
+                            System.out.println("REPORT: Trash " + file.getName() + " deleted");
+                        } else {
+                            System.out.println("REPORT: Trash " + file.getName() + " delete failed");
+                        }
+                    }
+                }
+            } else {
+                System.out.println("REPORT: no trash file found");
+            }
+        }
+        redirectAttributes.addFlashAttribute("message", "清理完毕");
+        return "redirect:/system/settings";
+    }
 }
diff --git a/project2/web/WEB-INF/views/dashboard.jsp b/project2/web/WEB-INF/views/dashboard.jsp
index 7b83560..917085d 100644
--- a/project2/web/WEB-INF/views/dashboard.jsp
+++ b/project2/web/WEB-INF/views/dashboard.jsp
@@ -40,16 +40,16 @@
                             学生管理
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown1">
-                            <li><a class="dropdown-item" href="student/all">学生信息显示</a></li>
-                            <li><a class="dropdown-item" href="student/queryinfo">学生信息查询</a></li>
-                            <li><a class="dropdown-item" href="student/modstep1">学生信息修改(旧)</a></li>
-                            <li><a class="dropdown-item" href="student/infomodv2">学生信息修改</a></li>
+                            <li><a class="dropdown-item" href="/student/all">学生信息显示</a></li>
+                            <li><a class="dropdown-item" href="/student/queryinfo">学生信息查询</a></li>
+                            <li><a class="dropdown-item" href="/student/modstep1">学生信息修改(旧)</a></li>
+                            <li><a class="dropdown-item" href="/student/infomodv2">学生信息修改</a></li>
                             <li><a class="dropdown-item disabled"><del>自己输入sql语句查</del>(划掉,没做)</a></li>
                             <li>
                                 <hr class="dropdown-divider" />
                             </li>
-                            <li><a class="dropdown-item" href="score/all">成绩查看</a></li>
-                            <li><a class="dropdown-item" href="score/infomodv2">成绩管理</a></li>
+                            <li><a class="dropdown-item" href="/score/all">成绩查看</a></li>
+                            <li><a class="dropdown-item" href="/score/infomodv2">成绩管理</a></li>
                             <li><a class="dropdown-item" href="#">学生成绩管理</a></li>
                             <li>
                                 <hr class="dropdown-divider" />
@@ -73,8 +73,8 @@
                             课程管理
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown3">
-                            <li><a class="dropdown-item" href="course/all">课程查看</a></li>
-                            <li><a class="dropdown-item" href="course/infomodv2">课程管理</a></li>
+                            <li><a class="dropdown-item" href="/course/all">课程查看</a></li>
+                            <li><a class="dropdown-item" href="/course/infomodv2">课程管理</a></li>
                         </ul>
                     </li>
                     <li class="nav-item dropdown">
@@ -84,7 +84,7 @@
                         </a>
                         <ul class="dropdown-menu" aria-labelledby="navbarDropdown4">
                             <li><a class="dropdown-item" href="#">个人设定</a></li>
-                            <li><a class="dropdown-item" href="#">系统设定</a></li>
+                            <li><a class="dropdown-item" href="/system/settings">系统设定</a></li>
                             <li><a class="dropdown-item" href="#">用户管理</a></li>
                             <li><a class="dropdown-item" href="#">日志管理</a></li>
                             <li><a class="dropdown-item" href="#">版本信息</a></li>
diff --git a/project2/web/WEB-INF/views/settings.jsp b/project2/web/WEB-INF/views/settings.jsp
new file mode 100644
index 0000000..6ca4c3e
--- /dev/null
+++ b/project2/web/WEB-INF/views/settings.jsp
@@ -0,0 +1,202 @@
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
+    <meta http-equiv="x-ua-compatible" content="ie=edge"/>
+    <title>成绩信息修改v2</title>
+    <script src="${pageContext.request.contextPath}/resources/js/jquery-3.7.0.min.js"></script>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css"/>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap"
+          rel="stylesheet">
+    <link rel="stylesheet" href="${pageContext.request.contextPath}/resources/css/mdb.min.css"/>
+    <style>
+        .tab-pane {
+            min-height: 500px;
+        }
+    </style>
+</head>
+
+<body style="font-family: 'Noto Sans SC Regular',serif">
+<!--Main Navigation-->
+<header>
+    <nav class="navbar navbar-expand-lg navbar-light bg-light" style="z-index: 1;min-height: 58.59px">
+        <div class="container">
+            <button class="navbar-toggler" type="button" data-mdb-toggle="collapse"
+                    data-mdb-target="#navbarSupportedContent" aria-controls="navbarSupportedContent"
+                    aria-expanded="false" aria-label="Toggle navigation">
+                <i class="fas fa-bars"></i>
+            </button>
+            <div class="collapse navbar-collapse" id="navbarSupportedContent">
+                <a class="navbar-brand mt-2 mt-lg-0" href="#">
+                    <i class="fas fa-chalkboard-user me-2"></i>
+                    教务管理系统
+                </a>
+                <ul class="navbar-nav">
+                    <li class="nav-item">
+                        <a class="nav-link active" aria-current="page" href="#">首页</a>
+                    </li>
+                    <li class="nav-item dropdown">
+                        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown1" role="button"
+                           data-mdb-toggle="dropdown" aria-expanded="false">
+                            学生管理
+                        </a>
+                        <ul class="dropdown-menu" aria-labelledby="navbarDropdown1">
+                            <li><a class="dropdown-item" href="#">学生信息查询</a></li>
+                            <li><a class="dropdown-item" href="#">学生信息管理</a></li>
+                            <li><a class="dropdown-item" href="#">学生信息管理</a></li>
+                            <li>
+                                <hr class="dropdown-divider"/>
+                            </li>
+                            <li><a class="dropdown-item" href="#">学生成绩管理</a></li>
+                            <li><a class="dropdown-item" href="#">学生成绩管理</a></li>
+                            <li><a class="dropdown-item" href="#">学生成绩管理</a></li>
+                            <li>
+                                <hr class="dropdown-divider"/>
+                            </li>
+                            <li><a class="dropdown-item" href="#">学生选课管理</a></li>
+                            <li><a class="dropdown-item" href="#">学生选课管理</a></li>
+                            <li><a class="dropdown-item" href="#">学生选课管理</a></li>
+                        </ul>
+                    </li>
+                    <li class="nav-item dropdown">
+                        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown2" role="button"
+                           data-mdb-toggle="dropdown" aria-expanded="false">
+                            教师管理
+                        </a>
+                        <ul class="dropdown-menu" aria-labelledby="navbarDropdown2">
+                            <li><a class="dropdown-item" href="#">教师信息管理</a></li>
+                            <li><a class="dropdown-item" href="#">教师课程管理</a></li>
+                        </ul>
+                    </li>
+                    <li class="nav-item dropdown">
+                        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown3" role="button"
+                           data-mdb-toggle="dropdown" aria-expanded="false">
+                            课程管理
+                        </a>
+                        <ul class="dropdown-menu" aria-labelledby="navbarDropdown3">
+                            <li><a class="dropdown-item" href="#">课程信息管理</a></li>
+                            <li><a class="dropdown-item" href="#">课程安排管理</a></li>
+                        </ul>
+                    </li>
+                    <li class="nav-item dropdown">
+                        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown4" role="button"
+                           data-mdb-toggle="dropdown" aria-expanded="false">
+                            系统管理
+                        </a>
+                        <ul class="dropdown-menu" aria-labelledby="navbarDropdown4">
+                            <li><a class="dropdown-item" href="#">个人设定</a></li>
+                            <li><a class="dropdown-item" href="#">用户管理</a></li>
+                            <li><a class="dropdown-item" href="#">日志管理</a></li>
+                            <li><a class="dropdown-item" href="#">版本信息</a></li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+            <div class="dropdown">
+                <a class="dropdown-toggle d-flex align-items-center hidden-arrow" href="#"
+                   id="navbarDropdownMenuAvatar" role="button" data-mdb-toggle="dropdown" aria-expanded="false">
+                    <i class="fas fa-circle-user fa-lg me-1"></i>
+                    ${username}
+                </a>
+                <ul class="dropdown-menu dropdown-menu-end" aria-labelledby="navbarDropdownMenuAvatar">
+                    <li>
+                        <a class="dropdown-item" href="${pageContext.request.contextPath}/logout">登出</a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+</header>
+
+<!--Main Navigation-->
+
+<!--Main layout-->
+<main>
+    <div class="bg-image shadow-2-strong vh-100"
+         style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
+        <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
+            <div class="container d-flex justify-content-center">
+                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div class="container">
+                    <div class="card rounded-4 shadow-3-strong" style="min-width: 244px">
+                        <ul class="nav nav-tabs" id="ex1" role="tablist">
+                            <li class="nav-item" role="presentation">
+                                <a class="nav-link active fs-6" id="ex1-tab-1" data-mdb-toggle="tab" href="#ex1-tabs-1"
+                                   role="tab" aria-controls="ex1-tabs-1" aria-selected="true">高级设置</a>
+                            </li>
+                        </ul>
+                        <hr class="hr" style="margin: 1px"/>
+                        <div class="tab-content" id="ex1-content">
+                            <div class="tab-pane fade show active" id="ex1-tabs-1" role="tabpanel"
+                                 aria-labelledby="ex1-tab-1">
+                                <div class="card-body" style="min-width: 175px">
+                                    <div class="row">
+                                        <div class="col-lg-2 text-center">
+                                            <p>缓存文件大小:<mark>${trashSize}</mark></p>
+                                        </div>
+                                    </div>
+                                    <div class="row">
+                                        <div class="col-lg-2 text-center">
+                                            <button type="button" class="btn btn-secondary btn-lg" onclick="cleantrash()" data-mdb-toggle="tooltip" data-mdb-placement="bottom" title="这将会清除工作目录下的垃圾文件">清除缓存文件</button>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+    <!-- Modal -->
+    <div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title" id="exampleModalLabel">
+                        <i class="fas fa-circle-info me-2"></i>提示
+                    </h5>
+                    <button type="button" class="btn-close" data-mdb-dismiss="modal" aria-label="Close"></button>
+                </div>
+                <div class="modal-body">
+                    <c:if test="${not empty message}">
+                        ${message}
+                    </c:if>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-primary" data-mdb-dismiss="modal">OK</button>
+                </div>
+            </div>
+        </div>
+    </div>
+</main>
+
+<!--Main layout-->
+
+<!-- Footer -->
+<footer class="bg-link text-center text-lg-start ">
+</footer>
+<!-- Footer -->
+
+
+<script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
+<script>
+    $(document).ready(function () {
+        <c:if test="${not empty message && message ne 'null'}">
+        $('#exampleModal').modal('show');
+        </c:if>
+    });
+    function cleantrash(){
+        //click this button to clean (/system/clean)
+        window.location.href = "/system/clean";
+    }
+</script>
+</body>
+
+</html>
\ No newline at end of file