<insert id="saveMatchResult" > INSERT INTO sp4_acl_so (acl_id, so_uuid__proc_def_id) <foreach collection="aclDeviceMap.keys" index="index" item="item" separator="UNION ALL"> <foreach collection="aclDeviceMap[item]" index="index_set" item="set" separator="UNION ALL"> SELECT #{item.aclId}, #{set} FROM DUAL </foreach> </foreach> </insert>
aclDeviceMap：就是在接口中使用@Param("aclDeviceMap")标注了变量
Mybatis foreach嵌套遍历Map的key和value
原文：http://www.cnblogs.com/llhua/p/4463289.html