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。
因此，您需要启动一个新的“嵌套”事务来记录错误。
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(); }}
