select byid 方法
根据id，查询记录
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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
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public account findbyaccountname(string accountname) { accountexample accountexample = new accountexample(); accountexample.criteria criteria = accountexample.createcriteria(); criteria.andaccountnameequalto(accountname); list<account> 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
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public account findbyaccountname(string accountname) { accountexample accountexample = new accountexample(); accountexample.criteria criteria = accountexample.createcriteria(); list<account> accountlist = accountservice.selectbyexample(accountexample); if (accountlist == null || accountlist.size() != 1 ) return null ; else return accountlist.get( 0 ); } |
总结
以上所述是小编给大家介绍的mybatis中的select方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
原文链接：https://blog.csdn.net/nangeali/article/details/81278822
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