Shop getShopByIdNestedResult(Integer id);

<resultMap id="nestedResultMap" type="Shop">
    <id column="shop_id" property="id" ></id>
    <result column="owner_id" property="ownerId" ></result>
    <result column="shop_category_id" property="categoryId" ></result>
    <result column="shop_name" property="name"></result>
    <result column="shop_desc" property="desc"></result>
    <result column="shop_addr" property="addr"></result>
    <result column="phone" property="phone"></result>
    <result column="shop_img" property="image"></result>
    <result column="priority" property="priority"></result>
    <result column="create_time" property="createTime"></result>
    <result column="last_edit_time" property="lastEditTime"></result>
    <result column="enable_status" property="enableStatus"></result>
    <association property="area" column="area_id" javaType="Area">
        <id column="a_area_id" property="id" />
        <result column="a_area_name" property="name"/>
        <result column="a_priority" property="priority"/>
        <result column="a_create_time" property="createTime"/>
        <result column="a_last_edit_time" property="lastEditTime"/>
    </association>
    <collection property="productList" column="shop_id"
                select="io.github.coinsjack.dao.ProductMapper.getProductListByShopID" javaType="ArrayList" ofType="Product" >
    </collection>
</resultMap>

<select id="getShopByIdNestedResult" parameterType="int" resultMap="nestedResultMap" >
    SELECT
      s.`shop_id` as `shop_id`,
      s.`owner_id` as `owner_id`,
      s.`area_id` as `area_id`,
      s.`shop_category_id` as `shop_category`,
      s.`shop_name` as `shop_name`,
      s.`shop_desc` as `shop_desc`,
      s.`shop_addr` as `shop_addr`,
      s.`phone` as `phone`,
      s.`shop_img` as `shop_img`,
      s.`priority` as `priority`,
      s.`create_time` as `create_time`,
      s.`last_edit_time` as `last_edit_time`,
      s.`enable_status` as `enable_status`,
      s.`advice` as `advice`,

      a.`area_id` as `a_area_id`,
      a.`area_name` as `a_area_name`,
      a.`priority` as `a_priority`,
      a.`create_time` as `a_create_time`,
      a.`last_edit_time` as `a_last_edit_time`
    FROM `tb_shop`  s
      LEFT JOIN `tb_area`  a
        ON s.`area_id` = a.`area_id`

    WHERE s.shop_id = #{id};
</select>

@Test
public void testGetShopByIdNestedResult() {
    SqlSession session = MyBatisUtil.getSqlSession();
    ShopMapper mapper = session.getMapper(ShopMapper.class);
    System.out.println(mapper.getShopByIdNestedResult(29));
    session.close();
}