diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/StudentController.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/StudentController.class
index 7ae77a1..7e57fc1 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/StudentController.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/controller/StudentController.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/StudentDaoImpl.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/StudentDaoImpl.class
index 6f01e68..953702a 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/StudentDaoImpl.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/mapper/impl/StudentDaoImpl.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/pojo/Student.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/pojo/Student.class
index c1a05b9..0f30cfe 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/pojo/Student.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/pojo/Student.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/StudentService.class b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/StudentService.class
index 9ce1077..709e690 100644
Binary files a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/StudentService.class and b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/cyou/chenx221/service/StudentService.class differ
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/StudentMapper.xml b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/StudentMapper.xml
index 130a60e..3cb708e 100644
--- a/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/StudentMapper.xml
+++ b/project2/out/artifacts/project2_war_exploded/WEB-INF/classes/mapper/StudentMapper.xml
@@ -4,9 +4,16 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="cyou.chenx221.mapper.StudentDao">
     <select id="getAllStudents" resultType="cyou.chenx221.pojo.Student">
-        SELECT * FROM student WHERE removed = 0
+        SELECT *
+        FROM student
+        WHERE removed = 0
+    </select>
+    <select id="getStudentById" resultType="cyou.chenx221.pojo.Student">
+        SELECT *
+        FROM student
+        WHERE id = #{id}
+          AND removed = 0
     </select>
-
     <select id="getQueryStudents" parameterType="cyou.chenx221.pojo.Student" resultType="cyou.chenx221.pojo.Student">
         SELECT * FROM student
         WHERE 1=1
@@ -26,6 +33,7 @@
             AND id = #{id}
         </if>
     </select>
+
     <select id="getQueryStudents2" parameterType="cyou.chenx221.pojo.Student" resultType="cyou.chenx221.pojo.Student">
         SELECT * FROM student
         WHERE 1=1
@@ -36,6 +44,7 @@
             </foreach>
         </if>
     </select>
+
     <update id="updateStudent" parameterType="cyou.chenx221.pojo.Student">
         UPDATE student
         SET
@@ -49,4 +58,11 @@
         WHERE id = #{id}
     </update>
 
+    <update id="deleteStudent" parameterType="int">
+        UPDATE student
+        SET removed = 1
+        WHERE id = #{id}
+    </update>
+
+
 </mapper>
diff --git a/project2/out/artifacts/project2_war_exploded/WEB-INF/views/studentinfomodv2.jsp b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/studentinfomodv2.jsp
index edfb498..e81b343 100644
--- a/project2/out/artifacts/project2_war_exploded/WEB-INF/views/studentinfomodv2.jsp
+++ b/project2/out/artifacts/project2_war_exploded/WEB-INF/views/studentinfomodv2.jsp
@@ -179,7 +179,7 @@
                             </li>
                         </ul>
                         <!-- Tabs navs -->
-
+                        <hr class="hr" style="margin: 1px" />
                         <!-- Tabs content -->
                         <div class="tab-content" id="ex1-content">
                             <div class="tab-pane fade show active" id="ex1-tabs-1" role="tabpanel"
@@ -256,7 +256,7 @@
                             </div>
                             <div class="tab-pane fade" id="ex1-tabs-2" role="tabpanel" aria-labelledby="ex1-tab-2">
                                 <div class="card-body" style="min-width: 175px">
-                                    <form action="modinfo" method="post">
+                                    <form action="delinfo" method="post">
                                         <div class="row mb-2">
                                             <div class="col-12">
                                                 <div class="form-outline">
diff --git a/project2/src/main/java/cyou/chenx221/controller/StudentController.java b/project2/src/main/java/cyou/chenx221/controller/StudentController.java
index 4b15c50..d5f6a31 100644
--- a/project2/src/main/java/cyou/chenx221/controller/StudentController.java
+++ b/project2/src/main/java/cyou/chenx221/controller/StudentController.java
@@ -114,15 +114,38 @@ public class StudentController {
         return "studentinfomodv2";
     }
 
-    @PostMapping(value = "/delinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")//处理学生信息修改请求
+    @PostMapping(value = "/delinfo", produces = "application/x-www-form-urlencoded;charset=UTF-8")
     public String UpdateModInfo(@RequestParam(value = "id", defaultValue = "-1", required = false) int id,
                                 Model model) {
-        Student student;
-        if (id <= -1) {
-            model.addAttribute("errorMessage", "ID异常，学生信息修改失败");
+        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 = new Student(id);
-            studentService.deleteStudent(student);
+//            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", defaultValue = "null", required = false) String name,
+                                @RequestParam(value = "birthday", defaultValue = "#{null}", required = false) Date birthday,
+                                @RequestParam(value = "sex", defaultValue = "null", required = false) String sex,
+                                @RequestParam(value = "phone", defaultValue = "null", required = false) String phone,
+                                @RequestParam(value = "classes", defaultValue = "", required = false) String classes,
+                                Model model) {
+        Student student;
+        if (name.equals("null")) name = null;
+        if (sex.equals("null")) sex = null;
+        if (phone.equals("null")) phone = null;
+        if (classes.equals("")) classes = null;
+
+        if (id <= -1) {
+            model.addAttribute("errorMessage", "学生信息修改失败");
+        } else {
+            student = new Student(id, name, sex, birthday, phone, classes);
+            studentService.updateStudent(student);
             model.addAttribute("successMessage", "学生信息修改成功");
         }
         return "redirect:/student/modstep1";
diff --git a/project2/src/main/java/cyou/chenx221/mapper/StudentDao.java b/project2/src/main/java/cyou/chenx221/mapper/StudentDao.java
index 72c04a9..e35fcab 100644
--- a/project2/src/main/java/cyou/chenx221/mapper/StudentDao.java
+++ b/project2/src/main/java/cyou/chenx221/mapper/StudentDao.java
@@ -3,13 +3,12 @@ package cyou.chenx221.mapper;
 import cyou.chenx221.pojo.Student;
 import org.springframework.stereotype.Repository;
 
-import java.util.Date;
 import java.util.List;
 
 @Repository
 public interface StudentDao {
     void insertStudent(Student student);
-    void deleteStudent(Student student);
+    void deleteStudent(int id);
     Student getStudentById(int studentId);
     List<Student> getAllStudents();
 
diff --git a/project2/src/main/java/cyou/chenx221/mapper/impl/StudentDaoImpl.java b/project2/src/main/java/cyou/chenx221/mapper/impl/StudentDaoImpl.java
index 9eb0429..aebe2f4 100644
--- a/project2/src/main/java/cyou/chenx221/mapper/impl/StudentDaoImpl.java
+++ b/project2/src/main/java/cyou/chenx221/mapper/impl/StudentDaoImpl.java
@@ -32,8 +32,8 @@ public class StudentDaoImpl implements StudentDao {
     }
 
     @Override
-    public void deleteStudent(Student student) {
-        sqlSession.delete("deleteStudent", student);
+    public void deleteStudent(int id) {
+        sqlSession.update("deleteStudent", id);
     }
 
     @Override
diff --git a/project2/src/main/java/cyou/chenx221/pojo/Student.java b/project2/src/main/java/cyou/chenx221/pojo/Student.java
index 5311827..d0f63ea 100644
--- a/project2/src/main/java/cyou/chenx221/pojo/Student.java
+++ b/project2/src/main/java/cyou/chenx221/pojo/Student.java
@@ -2,8 +2,6 @@ package cyou.chenx221.pojo;
 
 import org.springframework.format.annotation.DateTimeFormat;
 
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.List;
 
@@ -17,17 +15,17 @@ public class Student {
     private String classes;
     private List<String> classess;
 
-    private Integer removed;
+    private int removed;
 
-    public Student(Integer id) {
+    public Student(int id) {
         this.id = id;
     }
 
-    public Integer getRemoved() {
+    public int getRemoved() {
         return removed;
     }
 
-    public void setRemoved(Integer removed) {
+    public void setRemoved(int removed) {
         this.removed = removed;
     }
 
diff --git a/project2/src/main/java/cyou/chenx221/service/StudentService.java b/project2/src/main/java/cyou/chenx221/service/StudentService.java
index e0fda02..45ff4d5 100644
--- a/project2/src/main/java/cyou/chenx221/service/StudentService.java
+++ b/project2/src/main/java/cyou/chenx221/service/StudentService.java
@@ -19,8 +19,8 @@ public class StudentService {
         studentDao.insertStudent(student);
     }
 
-    public void deleteStudent(Student student) {
-        studentDao.deleteStudent(student);
+    public void deleteStudent(int id) {
+        studentDao.deleteStudent(id);
     }
 
     public Student getStudentById(int studentId) {
diff --git a/project2/src/main/resources/mapper/StudentMapper.xml b/project2/src/main/resources/mapper/StudentMapper.xml
index 130a60e..3cb708e 100644
--- a/project2/src/main/resources/mapper/StudentMapper.xml
+++ b/project2/src/main/resources/mapper/StudentMapper.xml
@@ -4,9 +4,16 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="cyou.chenx221.mapper.StudentDao">
     <select id="getAllStudents" resultType="cyou.chenx221.pojo.Student">
-        SELECT * FROM student WHERE removed = 0
+        SELECT *
+        FROM student
+        WHERE removed = 0
+    </select>
+    <select id="getStudentById" resultType="cyou.chenx221.pojo.Student">
+        SELECT *
+        FROM student
+        WHERE id = #{id}
+          AND removed = 0
     </select>
-
     <select id="getQueryStudents" parameterType="cyou.chenx221.pojo.Student" resultType="cyou.chenx221.pojo.Student">
         SELECT * FROM student
         WHERE 1=1
@@ -26,6 +33,7 @@
             AND id = #{id}
         </if>
     </select>
+
     <select id="getQueryStudents2" parameterType="cyou.chenx221.pojo.Student" resultType="cyou.chenx221.pojo.Student">
         SELECT * FROM student
         WHERE 1=1
@@ -36,6 +44,7 @@
             </foreach>
         </if>
     </select>
+
     <update id="updateStudent" parameterType="cyou.chenx221.pojo.Student">
         UPDATE student
         SET
@@ -49,4 +58,11 @@
         WHERE id = #{id}
     </update>
 
+    <update id="deleteStudent" parameterType="int">
+        UPDATE student
+        SET removed = 1
+        WHERE id = #{id}
+    </update>
+
+
 </mapper>
diff --git a/project2/web/WEB-INF/views/studentinfomodv2.jsp b/project2/web/WEB-INF/views/studentinfomodv2.jsp
index edfb498..263cac6 100644
--- a/project2/web/WEB-INF/views/studentinfomodv2.jsp
+++ b/project2/web/WEB-INF/views/studentinfomodv2.jsp
@@ -179,22 +179,13 @@
                             </li>
                         </ul>
                         <!-- Tabs navs -->
-
+                        <hr class="hr" style="margin: 1px" />
                         <!-- Tabs content -->
                         <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">
                                     <form action="modinfo" method="post">
-                                        <div class="row mb-2">
-                                            <div class="col-12">
-                                                <div class="form-outline">
-                                                    <input type="number" id="typeText1" class="form-control"
-                                                           required name="id"/>
-                                                    <label class="form-label" for="typeText1">ID (必填)</label>
-                                                </div>
-                                            </div>
-                                        </div>
                                         <div class="row mb-2">
                                             <div class="col-12">
                                                 <div class="form-outline">
@@ -256,7 +247,7 @@
                             </div>
                             <div class="tab-pane fade" id="ex1-tabs-2" role="tabpanel" aria-labelledby="ex1-tab-2">
                                 <div class="card-body" style="min-width: 175px">
-                                    <form action="modinfo" method="post">
+                                    <form action="delinfo" method="post">
                                         <div class="row mb-2">
                                             <div class="col-12">
                                                 <div class="form-outline">