随笔分类 -  mybatis plus

• mapper.xml-where应用场景: curd-条件语句
  摘要：mapper.java int deleteRelationsByRoleids(@Param("roleIds") Integer[] roleIds); mapper.xml <delete id="deleteRelationsByRoleids"> DELETE FROM user_role 阅读全文
  posted @ 2021-11-04 11:44 站在巨人的肩膀上搬砖 阅读(383) 评论(0) 推荐(0)
• mapper.xml-if应用场景: curd-传参判空和集合判断元素个数
  摘要：mapper.java int deleteRelationsByRoleids(@Param("roleIds") Integer[] roleIds); mapper.xml <delete id="deleteRelationsByRoleids"> DELETE FROM user_role 阅读全文
  posted @ 2021-11-04 11:36 站在巨人的肩膀上搬砖 阅读(213) 评论(0) 推荐(0)
• mapper.xml-foreach应用场景: curd-批量处理, 拼接等
  摘要：mapper.java int deleteRelationsByRoleids(@Param("roleids") Integer[] roleids); mapper.xml <delete id="deleteRelationsByRoleids"> DELETE FROM user_role 阅读全文
  posted @ 2021-11-04 11:25 站在巨人的肩膀上搬砖 阅读(207) 评论(0) 推荐(0)