一般这个错误是事务引起的,如果确定事务没有问题,还是有这个错,可以重写OpenSessionInViewFilter的2个方法
在myfaces的wiki里提供了OpenSessionInViewFilter的一个子类如下：
public class OpenSessionInViewFilter extends org.springframework.orm.hibernate3.support.OpenSessionInViewFilter {
/**
* we do a different flushmode than in the codebase
* here
*/
protected Session getSession(SessionFactory sessionFactory) throws DataAccessResourceFailureException {
Session session = SessionFactoryUtils.getSession(sessionFactory, true);
session.setFlushMode(FlushMode.COMMIT);
return session;
}
/**
* we do an explicit flush here just in case
* we do not have an automated flush
*/
protected void closeSession(Session session, SessionFactory factory) {
session.flush();
super.closeSession(session, factory);
}
}