一，示例程式碼：

1，OrderController.java

        List<Cart> cartList = cartService.getAllCartByCartId(userId,cartIds,configBeanValue.goodsImagesHost,configBeanValue.attrHost);

2,CartServiceImpl.java

    @Override
    public List<Cart> getAllCartByCartId(Long userId,Long[] cartIds,String urlHost,String urlHostAttr) {
        
 
//List<Cart> listCart = cartMapper.selectAllCartByUserId(userId);
        List<Cart> listCart = cartMapper.selectAllCartByCartId(userId,cartIds);
...

3,CartMapper.java

List<Cart> selectAllCartByCartId(@Param("userId")Long userId, @Param("cartIds")Long[] cartIds);

4,CartMapper.xml

    <
 
select id="selectAllCartByCartId" resultType="com.yj.storeback.pojo.Cart">
        select c.* from cart as c,goods as g where c.userId=#{userId} and c.goodsId=g.goodsId and g.isSale=1 and c.cartId IN
        <foreach collection="cartIds" item="id" index="index"
                 open="(" close=")"
 
 separator=",">
            #{id}
        </foreach>
        order by c.cartId desc
    </select>

說明：劉巨集締的架構森林是一個專注架構的部落格，地址：https://www.cnblogs.com/architectforest

對應的原始碼可以訪問這裡獲取：https://github.com/liuhongdi/
或:https://gitee.com/liuhongdi

說明：作者:劉巨集締 郵箱: [email protected]

二，測試效果

檢視sql查詢的日誌:

Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cd7fbe6] was not registered for synchronization because synchronization is not active
JDBC Connection [HikariProxyConnection@1874055310 wrapping com.mysql.cj.jdbc.ConnectionImpl@6052b4a0] will not be managed by Spring
==>  Preparing: select c.* from cart as c,goods as g where c.userId=? and c.goodsId=g.goodsId and g.isSale=1 and c.cartId IN ( ? , ? ) order by c.cartId desc
==> Parameters: 1(Long), 25(Long), 24(Long)
<==    Columns: cartId, isDirect, userId, goodsId, skuId, goodsName, skuAttrNames, skuAttrIds, price, amount, addTime, isCheck, packType, addFrom
<==        Row: 25, 0, 1, 1, 22, 元気森林蘇打水氣泡水無糖飲料元氣水, 480ml, 58, 44.00, 4, 2022-02-25 17:15:12, 1, 2, wap
<==        Row: 24, 0, 1, 2, 1, 張裕 第九代特選級解百納7, dd_22, 2_4, 8.00, 4, 2022-02-24 19:01:29, 1, 2, wap
<==      Total: 2
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cd7fbe6]

前端效果:

三，檢視mybatis的版本: