List<Product> productList;

public class Product implements Serializable{

    Integer id;
    String name;
    String desc;
    String imgAddr;
    String normalPrice;
    String promotionPrice;
    Integer priority;
    Date createTime;
    Date lastEditTime;
    Integer enableStatus;

List<Product> getProductListByShopID(Integer id);

<?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="io.github.coinsjack.dao.ProductMapper">
    <cache/>
    <resultMap id="productResultMap" type="Product">
        <result column="product_id" property="id"/>
        <result column="product_name" property="name"/>
        <result column="product_desc" property="desc"/>
        <result column="img_addr" property="imgAddr"/>
        <result column="normal_price" property="normalPrice"/>
        <result column="promotion_price" property="promotionPrice"/>
        <result column="create_time" property="createTime"/>
        <result column="last_edit_time" property="lastEditTime"/>
        <result column="enable_status" property="enableStatus"/>
        <result column="product_category_id" property="categoryID"/>
        <result column="shop_id" property="shopID"/>
    </resultMap>

    <select id="getProductListByShopID" resultMap="productResultMap">
        select * from tb_product
        WHERE `shop_id` = #{id};
    </select>
</mapper>

public class ProductMapperTest {
    @Test
    public void test_getProductByID() {
        SqlSession sqlSession = MyBatisUtil.getSqlSession();
        ProductMapper productMapper= sqlSession.getMapper(ProductMapper.class);

        System.out.printf("查询结果: %s%n", productMapper.getProductListByShopID(29));;
    }
}

<resultMap id="simpleResultMap" 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"
                 select="io.github.coinsjack.dao.AreaMapper.getAreaById"/>
    <collection property="productList" column="shop_id"
                select="io.github.coinsjack.dao.ProductMapper.getProductListByShopID" javaType="ArrayList" ofType="Product" >
    </collection>
</resultMap>

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