select方法怎么在Mybatis中使用-创新互联
select方法怎么在Mybatis中使用?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。

selectById方法
根据id,查询记录
public void updateRecycleAssayBusinessItemCharge(String Id) {
AssayBusinessItemCharge assayBusinessItemCharge = assayBusinessItemChargeService.selectById(Id);
assayBusinessItemCharge.setRecordStatus(RecordStatusEnum.VALID.getValue());
assayBusinessItemChargeService.update(assayBusinessItemCharge);
}selectByExample方法
根据实体字段,查询记录
public Account findByAccountName(String accountName) {
AccountExample accountExample = new AccountExample();
AccountExample.Criteria criteria = accountExample.createCriteria();
criteria.andAccountNameEqualTo(accountName);
List accountList = accountService.selectByExample(accountExample);
if (accountList == null || accountList.size() != 1)
return null;
else
return accountList.get(0);
} 查询所有list
传一个空的实体,不要给赋字段值
public Account findByAccountName(String accountName) {
AccountExample accountExample = new AccountExample();
AccountExample.Criteria criteria = accountExample.createCriteria();
List accountList = accountService.selectByExample(accountExample);
if (accountList == null || accountList.size() != 1)
return null;
else
return accountList.get(0);
} 看完上述内容,你们掌握select方法怎么在Mybatis中使用的方法了吗?如果还想学到更多技能或想了解更多相关内容,欢迎关注创新互联行业资讯频道,感谢各位的阅读!
网页题目:select方法怎么在Mybatis中使用-创新互联
标题来源:http://www.jxjierui.cn/article/phhss.html


咨询
建站咨询
