tr-footstone/tr-modules/tr-module-system/src/main/resources/mapper/user/SysUserPortalMapper.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="cn.tr.module.sys.user.repository.SysUserPortalRepository">

    <resultMap id="userPortalList" type="cn.tr.module.sys.user.dto.SysUserPortalListDTO">
        <result property="id" column="id"/>
        <result property="name" column="name"/>
        <result property="isDefault" column="is_default"/>
    </resultMap>

    <select id="findPortalsByUserId" resultMap="userPortalList">
         select p.id as id,
                p.name  as  name,
                up.is_default as is_default
            from (select * from sys_user where id=#{userId}) as u
            join sys_user_portal  as up on up.user_id=u.id
            join sys_portal as p on p.id = up.portal_id;
    </select>


</mapper>