mybatis分割字符串并循环,实现in多个参数的操作

mybatis分割字符串并循环,实现in多个参数

mybatis xml代码：

  
    select *
    from carinfo
    where
    xh in
 
  
   #{item}
  
 
  

mybatis sql打印：

==>  Preparing: select * from carinfo where xh in ( ? , ? ) 
==> Parameters: 1(String), 2(String)

mybatis多参数使用方法且其中有的参数是多个值使用in查询

1.当只有一个参数时且参数类型是List

List listInfo(@Param("orderIds") List orderIds);

我这里对参数重命名为"orderIds",所以下面foreach中collection="orderIds"，如果未重命名则foreach中collection="list"

       select materials_name as materialsName,sum(num) as totalNum,
       sum(price) as totalSale
       from sales_order_detail
       where shipment_result = 'SUCCESS' and refunds_time is null
       and sales_order_id in
       
           #{item}
      
      group by materials_id order by totalNum desc limit 5
  

2. 当只有一个参数时且参数类型是Array

List listInfo(Long[] orderIds);

如果参数类型是Array则collection属性为array

       select materials_name as materialsName,sum(num) as totalNum,
       sum(price) as totalSale
       from sales_order_detail
       where shipment_result = 'SUCCESS' and refunds_time is null
       and sales_order_id in
       
           #{item}
      
      group by materials_id order by totalNum desc limit 5
  

3.注意当查询的参数有多个时，例如

List listInfo(List orderIds, Integer num);

这种情况下传参要使用Map方式，这样在collection属性可以指定名称

Map params = new HashMap<>();
params.put("orderIds",orderIds);
params.put("num",num);
List listInfo(params);

XML如下：

    select materials_name as materialsName,sum(num) as totalNum,
    sum(price) as totalSale
    from sales_order_detail
    where shipment_result = 'SUCCESS' and refunds_time is null and num = #{num}
    and sales_order_id in
    
        #{item}
    
    group by materials_id order by totalNum desc limit 5

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。