Mybatis学习第22节 -- 高级结果映射 构造方法映射

public ShopCustom(Integer id, String shopName, String shopDesc) {
    this.id = id;
    this.shopName = shopName;
    this.shopDesc = shopDesc;
}

public interface ShopMapperCustom {

    ShopCustom getShopById(Integer id);
    ShopCustom  getShopByIdConstructor(Integer id);
}

<resultMap id="shopResultMapConstructor" type="ShopCustom">
    <constructor>
        <idArg column="shop_id" javaType="int"/>
        <arg column="shop_name" javaType="string"/>
        <arg column="shop_desc" javaType="string"/>
    </constructor>
</resultMap>

<select id="getShopByIdConstructor" parameterType="int" resultMap="shopResultMapConstructor" >
    select `shop_id`, `shop_name`, `shop_desc`
    from tb_shop
    where `shop_id` = #{id}
</select>

@Test
public void testGetShopByIdCustomConstructor() {
    SqlSession session = MyBatisUtil.getSqlSession();
    ShopMapperCustom mapper = session.getMapper(ShopMapperCustom.class);
    System.out.println(mapper.getShopByIdConstructor(29));
    session.close();
}