MyBatis级联属性赋值解决连表查询多对一的映射配置

连表后得到的数据

两个表都创建一个实体类 aoao 表实体类

sss 表实体类

在这个表的实体类中添加 aoao表这个实体类并设置tostring和get set方法
接口

   User  getAll(@Param("id") int id);

mapper表配置映射

    <resultMap id="userResultMap" type="User">
        <id property="id" column="id"></id>
        <result property="ids" column="ids"></result>
        <result property="names" column="name"></result>
        <result property="orderdate" column="orderdate"></result>
        <result property="cost" column="cost"></result>
        <!--设置 aoao表级联-->
        <result property="aoao.No" column="No"></result>
        <result property="aoao.loginPwd" column="loginPwd"></result>
        <result property="aoao.loginEmail" column="loginEmail"></result>
    </resultMap>
    <select id="getAll" resultMap="userResultMap">
        SELECT * from sss as a1 left join aoao as a2 on a1.id = a2.`No` WHERE a1.id=#{id}
    </select>
</mapper>

运行后