diff --git a/src/main/resources/mapper/StuClassMapper.xml b/src/main/resources/mapper/StuClassMapper.xml
index 0f03a86..2b1abd8 100644
--- a/src/main/resources/mapper/StuClassMapper.xml
+++ b/src/main/resources/mapper/StuClassMapper.xml
@@ -2,7 +2,8 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.sztzjy.financial_bigdata.mapper.StuClassMapper">
   <resultMap id="BaseResultMap" type="com.sztzjy.financial_bigdata.entity.StuClass">
-    <id column="class_id" jdbcType="VARCHAR" property="classId" />
+    <id column="id" jdbcType="VARCHAR" property="id" />
+    <result column="class_id" jdbcType="VARCHAR" property="classId" />
     <result column="class_name" jdbcType="VARCHAR" property="className" />
     <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
     <result column="school_name" jdbcType="VARCHAR" property="schoolName" />
@@ -67,7 +68,7 @@
     </where>
   </sql>
   <sql id="Base_Column_List">
-    class_id, class_name, create_time, school_name, system_owner
+    id, class_id, class_name, create_time, school_name, system_owner
   </sql>
   <select id="selectByExample" parameterType="com.sztzjy.financial_bigdata.entity.StuClassExample" resultMap="BaseResultMap">
     select
@@ -87,11 +88,11 @@
     select 
     <include refid="Base_Column_List" />
     from stu_class
-    where class_id = #{classId,jdbcType=VARCHAR}
+    where id = #{id,jdbcType=VARCHAR}
   </select>
   <delete id="deleteByPrimaryKey" parameterType="java.lang.String">
     delete from stu_class
-    where class_id = #{classId,jdbcType=VARCHAR}
+    where id = #{id,jdbcType=VARCHAR}
   </delete>
   <delete id="deleteByExample" parameterType="com.sztzjy.financial_bigdata.entity.StuClassExample">
     delete from stu_class
@@ -100,14 +101,19 @@
     </if>
   </delete>
   <insert id="insert" parameterType="com.sztzjy.financial_bigdata.entity.StuClass">
-    insert into stu_class (class_id, class_name, create_time, 
-      school_name, system_owner)
-    values (#{classId,jdbcType=VARCHAR}, #{className,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, 
-      #{schoolName,jdbcType=VARCHAR}, #{systemOwner,jdbcType=VARCHAR})
+    insert into stu_class (id, class_id, class_name, 
+      create_time, school_name, system_owner
+      )
+    values (#{id,jdbcType=VARCHAR}, #{classId,jdbcType=VARCHAR}, #{className,jdbcType=VARCHAR}, 
+      #{createTime,jdbcType=TIMESTAMP}, #{schoolName,jdbcType=VARCHAR}, #{systemOwner,jdbcType=VARCHAR}
+      )
   </insert>
   <insert id="insertSelective" parameterType="com.sztzjy.financial_bigdata.entity.StuClass">
     insert into stu_class
     <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
       <if test="classId != null">
         class_id,
       </if>
@@ -125,6 +131,9 @@
       </if>
     </trim>
     <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=VARCHAR},
+      </if>
       <if test="classId != null">
         #{classId,jdbcType=VARCHAR},
       </if>
@@ -151,6 +160,9 @@
   <update id="updateByExampleSelective" parameterType="map">
     update stu_class
     <set>
+      <if test="record.id != null">
+        id = #{record.id,jdbcType=VARCHAR},
+      </if>
       <if test="record.classId != null">
         class_id = #{record.classId,jdbcType=VARCHAR},
       </if>
@@ -173,7 +185,8 @@
   </update>
   <update id="updateByExample" parameterType="map">
     update stu_class
-    set class_id = #{record.classId,jdbcType=VARCHAR},
+    set id = #{record.id,jdbcType=VARCHAR},
+      class_id = #{record.classId,jdbcType=VARCHAR},
       class_name = #{record.className,jdbcType=VARCHAR},
       create_time = #{record.createTime,jdbcType=TIMESTAMP},
       school_name = #{record.schoolName,jdbcType=VARCHAR},
@@ -185,6 +198,9 @@
   <update id="updateByPrimaryKeySelective" parameterType="com.sztzjy.financial_bigdata.entity.StuClass">
     update stu_class
     <set>
+      <if test="classId != null">
+        class_id = #{classId,jdbcType=VARCHAR},
+      </if>
       <if test="className != null">
         class_name = #{className,jdbcType=VARCHAR},
       </if>
@@ -198,32 +214,33 @@
         system_owner = #{systemOwner,jdbcType=VARCHAR},
       </if>
     </set>
-    where class_id = #{classId,jdbcType=VARCHAR}
+    where id = #{id,jdbcType=VARCHAR}
   </update>
   <update id="updateByPrimaryKey" parameterType="com.sztzjy.financial_bigdata.entity.StuClass">
     update stu_class
-    set class_name = #{className,jdbcType=VARCHAR},
+    set class_id = #{classId,jdbcType=VARCHAR},
+      class_name = #{className,jdbcType=VARCHAR},
       create_time = #{createTime,jdbcType=TIMESTAMP},
       school_name = #{schoolName,jdbcType=VARCHAR},
       system_owner = #{systemOwner,jdbcType=VARCHAR}
-    where class_id = #{classId,jdbcType=VARCHAR}
+    where id = #{id,jdbcType=VARCHAR}
   </update>
 
-    <select id="selectByPrimaryKeys" parameterType="java.util.Set" resultMap="BaseResultMap">
-        SELECT *
-        FROM stu_class
-        WHERE class_id IN
-        <foreach close=")" collection="classIds" item="classId" open="(" separator=",">
-            #{classId}
-        </foreach>
-    </select>
+<!--  <select id="selectByPrimaryKeys" parameterType="java.util.Set" resultMap="BaseResultMap">-->
+<!--    SELECT *-->
+<!--    FROM stu_class-->
+<!--    WHERE id IN-->
+<!--    <foreach close=")" collection="classIds" item="classId" open="(" separator=",">-->
+<!--      #{id}-->
+<!--    </foreach>-->
+<!--  </select>-->
 
-    <select id="getByPrimaryKeys" parameterType="java.util.List" resultMap="BaseResultMap">
-        SELECT *
-        FROM stu_class
-        WHERE class_id IN
-        <foreach close=")" collection="classIds" item="classId" open="(" separator=",">
-            #{classId}
-        </foreach>
-    </select>
+<!--  <select id="getByPrimaryKeys" parameterType="java.util.List" resultMap="BaseResultMap">-->
+<!--    SELECT *-->
+<!--    FROM stu_class-->
+<!--    WHERE id IN-->
+<!--    <foreach close=")" collection="classIds" item="classId" open="(" separator=",">-->
+<!--      #{id}-->
+<!--    </foreach>-->
+<!--  </select>-->
 </mapper>
\ No newline at end of file