java mysbatis select_java相关:详解Mybatis中的select方法
java相關(guān):詳解Mybatis中的select方法
發(fā)布于 2020-7-3|
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摘記: selectById方法根據(jù)id,查詢記錄
```java
public void updateRecycleAssayBusinessItemCharge(String Id) {
AssayBusiness ..
selectById方法根據(jù)id,查詢記錄
```java
public void updateRecycleAssayBusinessItemCharge(String Id) {
AssayBusinessItemCharge assayBusinessItemCharge = assayBusinessItemChargeService.selectById(Id);
assayBusinessItemCharge.setRecordStatus(RecordStatusEnum.VALID.getValue());
assayBusinessItemChargeService.update(assayBusinessItemCharge);
}
```
selectByExample方法根據(jù)實(shí)體字段,查詢記錄
```java
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);
}
```
查詢所有l(wèi)ist傳一個(gè)空的實(shí)體,不要給賦字段值
```java
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);
}
```
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