diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/CourseController.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/CourseController.class
index 4bcea9a..350b1ca 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/CourseController.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/CourseController.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/CourseDao.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/CourseDao.class
index 8931819..63324dd 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/CourseDao.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/CourseDao.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/CourseDaoImpl.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/CourseDaoImpl.class
index 7328373..b9adee5 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/CourseDaoImpl.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/CourseDaoImpl.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/CourseService.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/CourseService.class
index 4e39398..708b2f5 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/CourseService.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/CourseService.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/CourseMapper.xml b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/CourseMapper.xml
index 5990dce..4b2e953 100644
--- a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/CourseMapper.xml
+++ b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/CourseMapper.xml
@@ -35,4 +35,19 @@
         </trim>
         WHERE CourseID = #{courseID}
     </update>
+    <select id="getCourseById" parameterType="int" resultType="cyou.chenx221.pojo.Course">
+        SELECT *
+        FROM course
+        WHERE CourseID = #{id}
+          AND removed = 0
+    </select>
+    <update id="deleteCourse" parameterType="int">
+        UPDATE course
+        SET removed = 1
+        WHERE CourseID = #{id}
+    </update>
+    <insert id="insertCourse" parameterType="cyou.chenx221.pojo.Course">
+        INSERT INTO course (CourseName, Description)
+        VALUES (#{courseName}, #{description})
+    </insert>
 </mapper>
\ No newline at end of file
diff --git a/project2/src/main/java/cyou/chenx221/controller/CourseController.java b/project2/src/main/java/cyou/chenx221/controller/CourseController.java
index 7da1179..fe9b1fc 100644
--- a/project2/src/main/java/cyou/chenx221/controller/CourseController.java
+++ b/project2/src/main/java/cyou/chenx221/controller/CourseController.java
@@ -10,7 +10,6 @@ import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 
-import java.sql.Date;
 import java.util.List;
 
 @Controller
@@ -42,43 +41,39 @@ public class CourseController {
         return "courseopv2";
     }
 
-//    @PostMapping(value = "/delinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
-//    public String UpdateModInfo(@RequestParam(value = "id") int id,
-//                                Model model) {
-//        Student temp = studentService.getStudentById(id);
-//        if (id <= 0 || temp == null) {
-//            model.addAttribute("errorMessage", "学生信息删除失败,可能是ID非法或者学生已删除");
-//        } else {
-////            Student student = new Student(id);
-//            studentService.deleteStudent(id);
-//            model.addAttribute("successMessage", "学生信息删除成功");
-//        }
-//        return "redirect:/student/infomodv2";
-//    }
-//
-//    @PostMapping(value = "/addinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
-//    public String InsertStudentInfo(@RequestParam(value = "name") String name,
-//                                    @RequestParam(value = "birthday") Date birthday,
-//                                    @RequestParam(value = "sex") String sex,
-//                                    @RequestParam(value = "phone") String phone,
-//                                    @RequestParam(value = "classes") String classes,
-//                                    Model model) {
-//        Student student;
-//        String classesPattern = "[1-5]班";// 使用正则表达式验证班级格式
-//
-//        //格式合法性检查
-//        if (!sex.equals("男") && !sex.equals("女")) {
-//            model.addAttribute("errorMessage", "性别格式不正确，仅允许'男'或'女'");
-//        } else if (!classes.matches(classesPattern)) {
-//            model.addAttribute("errorMessage", "班级格式不正确，格式应为?班（?为1~5之间的数字）");
-//        } else {
-//            student = new Student(name, sex, birthday, phone, classes);
-//            studentService.insertStudent(student);
-//            model.addAttribute("successMessage", "学生信息添加成功");
-//        }
-//        return "redirect:/student/infomodv2";
-//    }
-//
+    @PostMapping(value = "/delinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
+    public String UpdateModInfo(@RequestParam(value = "id") int id,
+                                Model model) {
+        Course temp = courseService.getCourseById(id);
+        if (id <= 0 || temp == null) {
+            model.addAttribute("errorMessage", "学生信息删除失败,可能是ID非法或者学生已删除");
+        } else {
+            int status_code = courseService.deleteCourse(id);
+            if (status_code == 1) {
+                model.addAttribute("successMessage", "学生信息删除成功");
+            } else if (status_code == 0) {
+                model.addAttribute("errorMessage", "学生信息删除失败,可能是ID非法或者学生已删除");
+            } else {
+                model.addAttribute("errorMessage", "学生信息删除异常");
+                System.out.println("DEBUG:异常删除，多条记录被删除");
+            }
+        }
+        return "redirect:/course/infomodv2";
+    }
+
+    //
+    @PostMapping(value = "/addinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
+    public String InsertCourseInfo(@RequestParam(value = "name", defaultValue = "null", required = false) String name,
+                                   @RequestParam(value = "description", defaultValue = "null", required = false) String description,
+                                   Model model) {
+        Course course;
+        course = new Course(name, description);
+        courseService.insertCourse(course);
+        model.addAttribute("successMessage", "学生信息添加成功");
+        return "redirect:/course/infomodv2";
+    }
+
+    //
     @PostMapping(value = "/modinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
     public String UpdateModInfo(@RequestParam(value = "name", defaultValue = "null", required = false) String name,
                                 @RequestParam(value = "description", defaultValue = "null", required = false) String description,
@@ -93,11 +88,11 @@ public class CourseController {
         } else {
             course = new Course(id, name, description);
             int status_code = courseService.updateCourse(course);
-            if(status_code==1){
+            if (status_code == 1) {
                 model.addAttribute("successMessage", "课程信息修改成功");
-            }else if(status_code==0) {
+            } else if (status_code == 0) {
                 model.addAttribute("errorMessage", "课程信息修改失败，可能是ID非法或者课程不存在");
-            }else{
+            } else {
                 model.addAttribute("errorMessage", "课程信息修改异常");
                 System.out.println("DEBUG:课程信息修改异常，存在多条记录被修改的情况");
             }
diff --git a/project2/src/main/java/cyou/chenx221/mapper/CourseDao.java b/project2/src/main/java/cyou/chenx221/mapper/CourseDao.java
index 81af62f..c11e43a 100644
--- a/project2/src/main/java/cyou/chenx221/mapper/CourseDao.java
+++ b/project2/src/main/java/cyou/chenx221/mapper/CourseDao.java
@@ -12,4 +12,10 @@ public interface CourseDao {
     List<Course> getQueryCourses(Course course);
 
     int updateCourse(Course course);
+
+    Course getCourseById(int id);
+
+    int deleteCourse(int id);
+
+    void insertCourse(Course course);
 }
diff --git a/project2/src/main/java/cyou/chenx221/mapper/impl/CourseDaoImpl.java b/project2/src/main/java/cyou/chenx221/mapper/impl/CourseDaoImpl.java
index 65517cc..53c8163 100644
--- a/project2/src/main/java/cyou/chenx221/mapper/impl/CourseDaoImpl.java
+++ b/project2/src/main/java/cyou/chenx221/mapper/impl/CourseDaoImpl.java
@@ -30,4 +30,19 @@ public class CourseDaoImpl implements CourseDao {
     public int updateCourse(Course course) {
         return sqlSession.update("updateCourse", course);
     }
+
+    @Override
+    public Course getCourseById(int id) {
+        return sqlSession.selectOne("getCourseById", id);
+    }
+
+    @Override
+    public int deleteCourse(int id) {
+        return sqlSession.delete("deleteCourse", id);
+    }
+
+    @Override
+    public void insertCourse(Course course) {
+        sqlSession.insert("insertCourse", course);
+    }
 }
diff --git a/project2/src/main/java/cyou/chenx221/service/CourseService.java b/project2/src/main/java/cyou/chenx221/service/CourseService.java
index 27fefa1..6cb72d5 100644
--- a/project2/src/main/java/cyou/chenx221/service/CourseService.java
+++ b/project2/src/main/java/cyou/chenx221/service/CourseService.java
@@ -27,4 +27,16 @@ public class CourseService {
     public int updateCourse(Course course) {
         return courseDao.updateCourse(course);
     }
+
+    public Course getCourseById(int id) {
+        return courseDao.getCourseById(id);
+    }
+
+    public int deleteCourse(int id) {
+        return courseDao.deleteCourse(id);
+    }
+
+    public void insertCourse(Course course) {
+        courseDao.insertCourse(course);
+    }
 }
diff --git a/project2/src/main/resources/mapper/CourseMapper.xml b/project2/src/main/resources/mapper/CourseMapper.xml
index 5990dce..4b2e953 100644
--- a/project2/src/main/resources/mapper/CourseMapper.xml
+++ b/project2/src/main/resources/mapper/CourseMapper.xml
@@ -35,4 +35,19 @@
         </trim>
         WHERE CourseID = #{courseID}
     </update>
+    <select id="getCourseById" parameterType="int" resultType="cyou.chenx221.pojo.Course">
+        SELECT *
+        FROM course
+        WHERE CourseID = #{id}
+          AND removed = 0
+    </select>
+    <update id="deleteCourse" parameterType="int">
+        UPDATE course
+        SET removed = 1
+        WHERE CourseID = #{id}
+    </update>
+    <insert id="insertCourse" parameterType="cyou.chenx221.pojo.Course">
+        INSERT INTO course (CourseName, Description)
+        VALUES (#{courseName}, #{description})
+    </insert>
 </mapper>
\ No newline at end of file
diff --git a/project2/web/WEB-INF/views/courseopv2.jsp b/project2/web/WEB-INF/views/courseopv2.jsp
index 195b863..4775d5f 100644
--- a/project2/web/WEB-INF/views/courseopv2.jsp
+++ b/project2/web/WEB-INF/views/courseopv2.jsp
@@ -298,7 +298,7 @@
                                         <div class="row mb-2">
                                             <div class="col-12">
                                                 <div class="form-outline">
-                                                    <input type="text" id="typeText14" class="form-control"
+                                                    <input type="text" id="typeText14" class="form-control" required
                                                            name="name"/>
                                                     <label class="form-label" for="typeText14">课程名 (必填)</label>
                                                 </div>
@@ -307,7 +307,7 @@
                                         <div class="row mb-2">
                                             <div class="col-12">
                                                 <div class="form-outline">
-                                                    <input type="text" id="typeText15" class="form-control"
+                                                    <input type="text" id="typeText15" class="form-control" required
                                                            name="description"/>
                                                     <label class="form-label" for="typeText15">课程描述 (必填)</label>
                                                 </div>