diagbotcloud/user-service/src/main/resources/mapper/UserMapper.xml

<?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.diagbot.mapper.UserMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.diagbot.entity.User">
        <id column="id" property="id" />
        <result column="is_deleted" property="isDeleted" />
        <result column="gmt_create" property="gmtCreate" />
        <result column="gmt_modified" property="gmtModified" />
        <result column="creator" property="creator" />
        <result column="modifier" property="modifier" />
        <result column="password" property="password" />
        <result column="username" property="username" />
    </resultMap>

    <select id="findByName" resultMap="BaseResultMap" parameterType="java.lang.String">
        select * from sys_user
        where username = #{username}
    </select>

    <select id="selectUserListPage" resultMap="BaseResultMap">
		select u.*
		from sys_user u
        LEFT JOIN sys_user_role ur on u.id= ur.user_id
        LEFT JOIN sys_role r on ur.role_id=r.id
        where 1=1
        <if test="user.id != null">
            and u.id = #{user.id}
        </if>
    </select>

</mapper>