首先，调用flush（）不会给您带来任何好处：flush（）不会执行任何操作，并且由于您在同一事务中记录错误，因此插入将回滚。
public class A {
@Autowired
private B b;
@Transactional
public void doSmt() {
try {
someOperation(); // can throw exception
b.logIntoDb(); // if everything is OK
} catch {Exception e} {
b.logIntoDbWithException(e.getMessage()); // log error into db
throw new MyCustomException(e);
}
}
}
public class B{
//outer transaction is still active
public void logIntoDb(String message) {
final LogEntry logEntry = new LogEntry();
logEntry.setDate(new Date());
logEntry.setMessage(message);
logEntry.persist();
}
// 'outer' transaction will be suspended until this method completes
// this new transaction will commit/rollback independently of the outer transaction
@Transactional(propagation = Propagation.REQUIRES_NEW)
public void logIntoDbWithException(String message) {
final LogEntry logEntry = new LogEntry();
logEntry.setDate(new Date());
logEntry.setMessage(message);
logEntry.persist();
}
}
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