第三阶段核心业务开发完成

springboot-init-main/target/classes/mapper/UserMapper.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.yupi.project.mapper.UserMapper">
+
+    <resultMap id="BaseResultMap" type="com.yupi.project.model.entity.User">
+        <id property="id" column="id" jdbcType="BIGINT"/>
+        <result property="userName" column="userName" jdbcType="VARCHAR"/>
+        <result property="userAccount" column="userAccount" jdbcType="VARCHAR"/>
+        <result property="userAvatar" column="userAvatar" jdbcType="VARCHAR"/>
+        <result property="gender" column="gender" jdbcType="TINYINT"/>
+        <result property="userRole" column="userRole" jdbcType="VARCHAR"/>
+        <result property="userPassword" column="userPassword" jdbcType="VARCHAR"/>
+        <result property="createTime" column="createTime" jdbcType="TIMESTAMP"/>
+        <result property="updateTime" column="updateTime" jdbcType="TIMESTAMP"/>
+        <result property="isDelete" column="isDelete" jdbcType="TINYINT"/>
+    </resultMap>
+
+    <sql id="Base_Column_List">
+        id,userName,userAccount,
+        userAvatar,gender,userRole,
+        userPassword,createTime,updateTime,
+        isDelete
+    </sql>
+
+    <update id="updateUserBalance">
+        UPDATE user
+        SET balance = balance + #{amountChange}
+        WHERE id = #{userId}
+        <if test="amountChange.signum() == -1">
+            AND balance >= #{amountChange.abs()}
+        </if>
+    </update>
+</mapper>