diff --git a/.idea/dataSources.xml b/.idea/dataSources.xml
index fefc9eb..29275a4 100644
--- a/.idea/dataSources.xml
+++ b/.idea/dataSources.xml
@@ -6,6 +6,11 @@
       <synchronize>true</synchronize>
       <jdbc-driver>com.mysql.cj.jdbc.Driver</jdbc-driver>
       <jdbc-url>jdbc:mysql://localhost:3306</jdbc-url>
+      <jdbc-additional-properties>
+        <property name="com.intellij.clouds.kubernetes.db.host.port" />
+        <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
+        <property name="com.intellij.clouds.kubernetes.db.container.port" />
+      </jdbc-additional-properties>
       <working-dir>$ProjectFileDir$</working-dir>
     </data-source>
   </component>
diff --git a/.idea/sqldialects.xml b/.idea/sqldialects.xml
new file mode 100644
index 0000000..3e0893b
--- /dev/null
+++ b/.idea/sqldialects.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/grademanagement/initial.sql" dialect="MySQL" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/grademanagement-MyBatisProject/src/com/ssm/entity/Class.java b/grademanagement-MyBatisProject/src/com/ssm/entity/Class.java
index daaf89a..f7ca7b0 100644
--- a/grademanagement-MyBatisProject/src/com/ssm/entity/Class.java
+++ b/grademanagement-MyBatisProject/src/com/ssm/entity/Class.java
@@ -5,6 +5,28 @@ public class Class {
     private String className;       // 班级名称
     private String grade;           // 年级
     private String major;           // 专业
+    private String teacher;         // 班主任
+    private Integer studentCount;   // 学生人数
+    private String description;     // 班级描述
+
+    // 无参构造函数
+    public Class() {
+    }
+
+    // 带部分参数的构造函数（用于添加）
+    public Class(String className, String grade, String major) {
+        this.className = className;
+        this.grade = grade;
+        this.major = major;
+    }
+
+    // 带ID的完整构造函数（用于更新）
+    public Class(Integer classId, String className, String grade, String major) {
+        this.classId = classId;
+        this.className = className;
+        this.grade = grade;
+        this.major = major;
+    }
 
     public Integer getClassId() {
         return classId;
@@ -38,6 +60,30 @@ public class Class {
         this.major = major;
     }
 
+    public String getTeacher() {
+        return teacher;
+    }
+
+    public void setTeacher(String teacher) {
+        this.teacher = teacher;
+    }
+
+    public Integer getStudentCount() {
+        return studentCount;
+    }
+
+    public void setStudentCount(Integer studentCount) {
+        this.studentCount = studentCount;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
 
     @Override
     public String toString() {
@@ -46,6 +92,9 @@ public class Class {
                 ", className='" + className + '\'' +
                 ", grade='" + grade + '\'' +
                 ", major='" + major + '\'' +
+                ", teacher='" + teacher + '\'' +
+                ", studentCount=" + studentCount +
+                ", description='" + description + '\'' +
                 '}';
     }
 
diff --git a/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.java b/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.java
index 97ab5ec..eca7cb2 100644
--- a/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.java
+++ b/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.java
@@ -1,8 +1,15 @@
 package com.ssm.mapper;
 
+import com.ssm.entity.Class;
+
 import java.util.List;
 
 public interface ClassMapper {
     Class getClassById(Integer classId);
     List<Class> getAllClasses();
+    void addClass(Class classEntity);
+    void updateClass(Class classEntity);
+    void deleteClassById(Integer classId);
+
+    Integer countTotlePage();
 }
diff --git a/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.xml b/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.xml
index 0cf4597..e8a8c2a 100644
--- a/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.xml
+++ b/grademanagement-MyBatisProject/src/com/ssm/mapper/ClassMapper.xml
@@ -3,14 +3,50 @@
         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.ssm.mapper.ClassMapper">
-    <select id="getClassById" resultType="com.ssm.entity.ClassEntity">
+    <!-- 定义结果映射 -->
+    <resultMap id="ClassResultMap" type="com.ssm.entity.Class">
+        <id property="classId" column="classId"/>
+        <result property="className" column="className"/>
+        <result property="grade" column="grade"/>
+        <result property="major" column="major"/>
+        <result property="teacher" column="teacher"/>
+        <result property="studentCount" column="studentCount"/>
+        <result property="description" column="description"/>
+    </resultMap>
+    
+    <select id="getClassById" resultMap="ClassResultMap">
         SELECT classId, className, grade, major, teacher, studentCount, description
         FROM class
         WHERE classId = #{classId}
     </select>
-    <select id="getAllClasses" resultType="com.ssm.entity.ClassEntity">
+    <select id="getAllClasses" resultMap="ClassResultMap">
         SELECT classId, className, grade, major, teacher, studentCount, description
         FROM class
         ORDER BY classId
     </select>
+
+    <!-- 添加班级 -->
+    <insert id="addClass" parameterType="com.ssm.entity.Class" useGeneratedKeys="true" keyProperty="classId">
+        INSERT INTO class(className, grade, major)
+        VALUES(#{className}, #{grade}, #{major})
+    </insert>
+
+    <!-- 更新班级 -->
+    <update id="updateClass" parameterType="com.ssm.entity.Class">
+        UPDATE class
+        SET className = #{className},
+            grade = #{grade},
+            major = #{major}
+        WHERE classId = #{classId}
+    </update>
+
+    <!-- 根据ID删除班级 -->
+    <delete id="deleteClassById" parameterType="Integer">
+        DELETE FROM class WHERE classId = #{classId}
+    </delete>
+
+    <!-- 统计班级总数 -->
+    <select id="countTotlePage" resultType="Integer">
+        SELECT COUNT(*) FROM class
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/grademanagement-MyBatisProject/src/com/ssm/mapper/CourseMapper.xml b/grademanagement-MyBatisProject/src/com/ssm/mapper/CourseMapper.xml
index 16cee5c..1ea78fd 100644
--- a/grademanagement-MyBatisProject/src/com/ssm/mapper/CourseMapper.xml
+++ b/grademanagement-MyBatisProject/src/com/ssm/mapper/CourseMapper.xml
@@ -3,15 +3,23 @@
         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.ssm.mapper.CourseMapper">
+    <!-- 定义结果映射 -->
+    <resultMap id="CourseResultMap" type="com.ssm.entity.Course">
+        <id property="courseId" column="courseId"/>
+        <result property="courseName" column="coursename"/>
+        <result property="credit" column="credit"/>
+        <result property="teacher" column="teacher"/>
+    </resultMap>
+
     <!-- 根据ID查询课程 -->
-    <select id="getCourseById" resultType="com.ssm.entity.Course">
+    <select id="getCourseById" resultMap="CourseResultMap">
         SELECT courseId, coursename, credit, teacher
         FROM course
         WHERE courseId = #{courseId}
     </select>
     
     <!-- 查询所有课程 -->
-    <select id="getAllCourses" resultType="com.ssm.entity.Course">
+    <select id="getAllCourses" resultMap="CourseResultMap">
         SELECT courseId, coursename, credit, teacher
         FROM course
         ORDER BY courseId
diff --git a/grademanagement-MyBatisProject/src/com/ssm/test/TestMyBatis.java b/grademanagement-MyBatisProject/src/com/ssm/test/TestMyBatis.java
index 0b3189c..f699b55 100644
--- a/grademanagement-MyBatisProject/src/com/ssm/test/TestMyBatis.java
+++ b/grademanagement-MyBatisProject/src/com/ssm/test/TestMyBatis.java
@@ -2,6 +2,7 @@ package com.ssm.test;
 
 import com.ssm.entity.Course;
 import com.ssm.entity.Score;
+import com.ssm.mapper.ClassMapper;
 import com.ssm.mapper.CourseMapper;
 import com.ssm.mapper.ScoreMapper;
 import org.apache.ibatis.io.Resources;
@@ -22,7 +23,39 @@ public class TestMyBatis {
 
             // 使用正确的变量名 sqlSession
             CourseMapper courseMapper = sqlSession.getMapper(CourseMapper.class);
+            ClassMapper classMapper = sqlSession.getMapper(ClassMapper.class);
 
+            // ========== Class模块测试 ==========
+            //测试查询所有班级
+            System.out.println("\n=== 组长刘思晗：所有班级列表 ===");
+            List<com.ssm.entity.Class> classes = classMapper.getAllClasses();
+            for (com.ssm.entity.Class c : classes) {
+                System.out.println(c);
+            }
+
+            // 测试查询单个班级
+            System.out.println("\n=== 查询班级ID=1 ===");
+            com.ssm.entity.Class cls = classMapper.getClassById(1);
+            System.out.println(cls);
+
+            // 测试添加班级
+            System.out.println("\n=== 添加班级 ===");
+            com.ssm.entity.Class newClass = new com.ssm.entity.Class("软件工程", "2024-2025", "软件工程");
+            classMapper.addClass(newClass);
+            System.out.println("添加成功：" + newClass);
+
+            // 测试更新班级
+            System.out.println("\n=== 测试更新班级 ===");
+            cls = new com.ssm.entity.Class(1, "软件工程", "2024-2025", "软件工程");
+            classMapper.updateClass(cls);
+            System.out.println("更新成功：" + cls);
+
+            // 班级总数
+            System.out.println("\n=== 统计班级总数 ===");
+            Integer totalCount = classMapper.countTotlePage();
+            System.out.println("总记录数：" + totalCount);
+
+            // ========== Course模块测试 ==========
             // 测试查询单个课程
             System.out.println("\n=== 成员吕淼 查询课程ID=1 ===");
             Course course = courseMapper.getCourseById(1);
@@ -35,6 +68,7 @@ public class TestMyBatis {
                 System.out.println(c);
             }
 
+
             // ========== Score模块测试 ==========
             ScoreMapper scoreMapper = sqlSession.getMapper(ScoreMapper.class);
 
@@ -74,8 +108,8 @@ public class TestMyBatis {
 
                 // 测试统计总数
                 System.out.println("\n=== 成绩总数 ===");
-                Integer totalCount = scoreMapper.countTotlePage();
-                System.out.println("总记录数：" + totalCount);
+                Integer totalScoreCount = scoreMapper.countTotlePage();
+                System.out.println("总记录数：" + totalScoreCount);
 
                 // 测试删除成绩（可选，注释掉以避免数据丢失）
                 // System.out.println("\n=== 删除成绩 ===");
diff --git a/grademanagement-MyBatisProject/src/config.xml b/grademanagement-MyBatisProject/src/config.xml
index ab95c90..b099525 100644
--- a/grademanagement-MyBatisProject/src/config.xml
+++ b/grademanagement-MyBatisProject/src/config.xml
@@ -25,5 +25,6 @@
     <mappers>
         <mapper resource="com/ssm/mapper/CourseMapper.xml"/>
         <mapper resource="com/ssm/mapper/ScoreMapper.xml"/>
+        <mapper resource="com/ssm/mapper/ClassMapper.xml"/>
     </mappers>
 </configuration>
\ No newline at end of file
diff --git a/grademanagement/initial.sql b/grademanagement/initial.sql
index f01645c..e477eda 100644
--- a/grademanagement/initial.sql
+++ b/grademanagement/initial.sql
@@ -2,28 +2,6 @@
 SET NAMES utf8mb4;
 SET FOREIGN_KEY_CHECKS = 0;
 
--- ----------------------------
--- Table structure for demo
--- ----------------------------
-DROP TABLE IF EXISTS `demo`;
-CREATE TABLE `demo`  (
-  `did` int(11) NOT NULL AUTO_INCREMENT,
-  `dname` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
-  `comment` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
-  PRIMARY KEY (`did`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 27 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
-
--- ----------------------------
--- Records of demo
--- ----------------------------
-INSERT INTO `demo` VALUES (20, '1', '1111');
-INSERT INTO `demo` VALUES (21, '2', '222');
-INSERT INTO `demo` VALUES (22, '3', '333');
-INSERT INTO `demo` VALUES (23, '4', '444');
-INSERT INTO `demo` VALUES (24, '5', '555');
-INSERT INTO `demo` VALUES (25, '6', '666');
-INSERT INTO `demo` VALUES (26, '7', '777');
-
 -- ----------------------------
 -- Table structure for course
 -- ----------------------------
@@ -42,4 +20,46 @@ CREATE TABLE `course`  (
 INSERT INTO `course` VALUES (1, '英语', 0, '张华');
 INSERT INTO `course` VALUES (2, 'C语言', 1, '李磊');
 
+-- ----------------------------
+-- Table structure for score
+-- ----------------------------
+DROP TABLE IF EXISTS `score`;
+CREATE TABLE `score`  (
+  `scoreId` int(11) NOT NULL AUTO_INCREMENT,
+  `studentName` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  `studentNo` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `courseName` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `score` double NULL DEFAULT NULL,
+  `semester` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `comment` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  PRIMARY KEY (`scoreId`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
+
+-- ----------------------------
+-- Records of score
+-- ----------------------------
+INSERT INTO `score` VALUES (1, '张三', '2021001', 'Java程序设计', 95.5, '2024-2025学年第一学期', '优秀');
+INSERT INTO `score` VALUES (2, '李四', '2021002', 'C语言', 88.0, '2024-2025学年第一学期', '良好');
+
+-- ----------------------------
+-- Table structure for class
+-- ----------------------------
+DROP TABLE IF EXISTS `class`;
+CREATE TABLE `class`  (
+  `classId` int(11) NOT NULL AUTO_INCREMENT,
+  `className` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  `grade` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `major` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `teacher` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `studentCount` int(11) NULL DEFAULT NULL,
+  `description` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  PRIMARY KEY (`classId`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
+
+-- ----------------------------
+-- Records of class
+-- ----------------------------
+INSERT INTO `class` VALUES (1, '计算机科学与技术1班', 2021, '计算机科学与技术', '王教授', 45, '优秀班级');
+INSERT INTO `class` VALUES (2, '软件工程2班', 2021, '软件工程', '李教授', 42, '良好班级');
+
 SET FOREIGN_KEY_CHECKS = 1;