mybatis分割字符串并循环,实现in多个参数
mybatis xml代码：
<select id="selectInXh" resultMap="BaseResultMap" parameterType="java.lang.String"> select * from carinfo where xh in <if test="param1 != null and param1 != ''"> <foreach item="item" index="index" collection="param1.split(',')" open="(" separator="," close=")"> #{item} </foreach> </if> </select>
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<AnalysisInfo> listInfo(@Param("orderIds") List<Integer> 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 id="listInfo" resultType="com.ieou.retail.module.H5.dto.AnalysisInfo"> 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 <foreach collection="orderIds" index="index" item="item" open="(" separator="," close=")"> #{item} </foreach> group by materials_id order by totalNum desc limit 5 </select>
2. 当只有一个参数时且参数类型是Array
List<AnalysisInfo> listInfo(Long[] orderIds);
如果参数类型是Array则collection属性为array
<select id="listInfo" resultType="com.ieou.retail.module.H5.dto.AnalysisInfo"> 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 <foreach collection="array" index="index" item="item" open="(" separator="," close=")"> #{item} </foreach> group by materials_id order by totalNum desc limit 5 </select>
3.注意当查询的参数有多个时，例如
List<AnalysisInfo> listInfo(List<Integer> 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<String, Object> params = new HashMap<>();params.put("orderIds",orderIds);params.put("num",num);List<AnalysisInfo> listInfo(params);
XML如下：
<select id="listInfo" resultType="com.ieou.retail.module.H5.dto.AnalysisInfo"> 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 <foreach collection="orderIds" index="index" item="item" open="(" separator="," close=")"> #{item} </foreach> group by materials_id order by totalNum desc limit 5</select>
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。
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