在休眠状态下,当我save()
事务中的一个对象,然后我回滚它,保存的对象仍然保留在数据库中。这很奇怪,因为这个问题不会发生在update()
or delete()
方法,只需用save()
.
这是我正在使用的代码:
DbEntity dbEntity = getDbEntity();
HibernateUtil.beginTransaction();
Session session = HibernateUtil.getCurrentSession();
session.save(dbEntity);
HibernateUtil.rollbackTransaction();
这是Hibernate实用程序类(只是涉及的功能,我保证getSessionFactory()
方法效果很好 - 有一个拦截器处理程序,但现在并不重要):
private static final ThreadLocal<Session> threadSession = new ThreadLocal<Session>();
private static final ThreadLocal<Transaction> threadTransaction = new ThreadLocal<Transaction>();
/**
* Retrieves the current Session local to the thread.
* <p/>
* If no Session is open, opens a new Session for the running thread.
*
* @return Session
*/
public static Session getCurrentSession()
throws HibernateException {
Session s = (Session) threadSession.get();
try {
if (s == null) {
log.debug("Opening new Session for this thread.");
if (getInterceptor() != null) {
log.debug("Using interceptor: " + getInterceptor().getClass());
s = getSessionFactory().openSession(getInterceptor());
} else {
s = getSessionFactory().openSession();
}
threadSession.set(s);
}
} catch (HibernateException ex) {
throw new HibernateException(ex);
}
return s;
}
/**
* Start a new database transaction.
*/
public static void beginTransaction()
throws HibernateException {
Transaction tx = (Transaction) threadTransaction.get();
try {
if (tx == null) {
log.debug("Starting new database transaction in this thread.");
tx = getCurrentSession().beginTransaction();
threadTransaction.set(tx);
}
} catch (HibernateException ex) {
throw new HibernateException(ex);
}
}
/**
* Rollback the database transaction.
*/
public static void rollbackTransaction()
throws HibernateException {
Transaction tx = (Transaction) threadTransaction.get();
try {
threadTransaction.set(null);
if ( tx != null && !tx.wasCommitted() && !tx.wasRolledBack() ) {
log.debug("Tyring to rollback database transaction of this thread.");
tx.rollback();
}
} catch (HibernateException ex) {
throw new HibernateException(ex);
} finally {
closeSession();
}
}
Thanks
检查您的数据库是否支持回滚,即您是否使用 InnoDB 表而不是 MyISAM(您可以混合事务性和非事务性表,但在大多数情况下,您希望所有表都是 InnoDB)。
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