mybatis 批量更新update

Posted 2021-02-06 Draymond

使用mybatis逆向工程生成的Example处理批量逻辑删除update

 

　　/*

　　将前端接收的id集合拼接的字符串解析

　　*/

String idListStr = baseConditions.getIdList();
String[] idStrList = idListStr.split(",");

List<Integer> integerList = new ArrayList<Integer>();
for (int i = 0; i < idStrList.length; i++) {
    Integer id = Integer.parseInt(idStrList[i]);
    integerList.add(id);
}

　　/*

　　要修改的信息

　　*/

//修改人，修改时间

RoleDO roleDO = new RoleDO();
roleDO.setModifier(baseConditions.getAdminId());
roleDO.setModifyTime(new Date());
roleDO.setIsDeleted(2);
 /*

Example是where的条件，需要update的主键集合List

*/
RoleDOExample roleDOExample = new RoleDOExample();

roleDOExample.createCriteria().andIdIn(integerList);
int i = roleDOMapper.updateByExampleSelective(roleDO, roleDOExample);

*sql语句类似
update role set  modifier=#{},modify_time =#{},is_deleted=2 where id in(1,3,5);

逆向工程的Example使用的详解
https://blog.csdn.net/biandous/article/details/65630783