Mybatis使用collection标签实现一对多关联查询，返回结果集list中嵌套list

class PlatForm{
  private String id;
  private String code;
  ....
  private List<TatgetUser> tatgetUsers; // 一对多 集合
}

select
a.id
,a.code
,a.full_name
,a.simple_name
,a.depart
,a.platform
,a.intPOdlJCe
,a.logo
,a.value_explanation
,c.id as tid
,c.target_code as targetCode
,c.target_name as targetName
from rd_plat_form a
left join rd_plate_target b on a.code = b.plate_code  -- 中间表关联
left join rd_target_user c on b.target_code = C.target_code

<resultMap id="BaseResultMap" type="com.xxx.modules.xxx.entity.PlatForm " >
    <id column="id"      property="id"      jdbcType="VARCHAR" />
    <result column="code" property="code" jdbcType="VARCHAR" />
    <result column="logo"    property="logo"    jdbcType="VARCHAR" />
    <collection property="talgetUsers" javaType="java.util.ArrayList" ofType="com.xxx.modules.xxx.entity.TatgetUser"/>
      <!--TatgetUser 实体属性-->
      <!--id 起别名因为，主类PlatForm有id 重复了-->
      <id column:"tid" property="id"/>
      <result column:"talgetCode" property="tatgetCode"/>
      <result column:"talgetName" property="talgetName"/>
    </collection>
</resultMap>

<resultMap id="BaseResultMap" type="com.xxx.modules.xxx.entity.PlatForm " >
    <id column="id"      property="id"      jdbcType="VARCHAR" />
    <result column="code" property="code" jdbcType="VARCHAR" />
    <result column="logo"    property="logo"    jdbcType="VARCHAR" />
    <collection property="talgetUsers" javaType="java.util.ArrayList" ofType="com.xxx.modules.xxx.entity.TatgetUser" 
    select="com.xxx.modules.xxx.mapper.TatgetUserMapper.selectList" column="{platCode=code,source = id}"/>
</resultMap>

<mapper namespace="com.xxx.modules.xxx.mapper.TatgetUserMapper">
 <!-- 查询列表 -->
 <select id="selectList" resultType="TargetUser">
     SELECT
      a.id, a.plat_code platCode, a.plat_name platName
     FROM
      tatget_user AS a
     <where>
      a.plat_Code = #{platCode} <!-- 变量名 platCode对应上文的 platCode -->
      and a.source  = #{source} <!-- 变量名 source对应上文的 source -->
     </where>
 </select>