selectById方法
根據id，查詢記錄
public void updateRecycleAssayBusinessItemCharge(String Id) { AssayBusinessItemCharge assayBusinessItemCharge = assayBusinessItemChargeService.selectById(Id); assayBusinessItemCharge.setRecordStatus(RecordStatusEnum.VALID.getValue()); assayBusinessItemChargeService.update(assayBusinessItemCharge);}selectByExample方法
根據實體字段，查詢記錄
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);}查詢所有list
傳一個空的實體，不要給賦字段值
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);}總結
以上所述是小編給大家介紹的Mybatis中的select方法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對VeVb武林網網站的支持！
新聞熱點
疑難解答
圖片精選
