当发生未处理的异常时,Hibernate是否自动回滚编程事务?

方法(尽管代码很难看)来确保回滚,但我想知道是否有一种更优雅的方法来编码它,好吗?

ApplicationContext ac = new ClassPathXmlApplicationContext("hibernate-config.xml");
SessionFactory factory = (SessionFactory) ac.getBean("sessionFactory");
Session session = factory.getCurrentSession();

Transaction txn = null;
try
{
    txn = session.beginTransaction();

    // <insert transaction work here>

    txn.commit();
}
catch(Exception e)
{
    try {txn.rollback(); }
    catch (Exception eAny) {  }
    throw(e);
}
finally { session.close(); }