Question

抱歉，我在问这个常见问题当两个Web服务调用相同的方法并且每次调用方法isUserValid（）时，我都会遇到异常。用户验证返回true但仍然获得异常。为什么只有在第二次调用它才会抛出异常，我在第一次结束之前调用第二个Web服务。有没有办法让两个人分别调用执行。

 org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.dmainc.commons.security.User#4]

问题方法 -

public UpdateFileRequest getUpdateFragment(UpdateFilter filter)
  {
  Session session = null;
  Transaction transaction = null;

  UpdateFileRequest request = new UpdateFileRequest();
  UpdateFragmentReleaseFilter releaseFilter = null;

  try
  {
     session = HibernateUtils.currentSession();
     transaction = session.beginTransaction();

     releaseFilter = new UpdateFragmentReleaseFilter(filter);

     // are the user credentials valid
     if(ServiceUtils.isUserValid(releaseFilter))
     {
      //Getting exception at this place while committing the transacation
       HibernateUtils.commit(transaction);
     }

currentSession方法

public static Session currentSession() throws HibernateException {
    Session s = session.get();

    if(s != null)
       s = validateSession(s);

    // Open a new Session, if this Thread has none yet
    if (s == null) {
        if (log.isDebugEnabled())
            log.debug("Opening new session");
        s = session_factory.openSession();

        session.set(s);
        new_session.set(Boolean.TRUE);
    } else if (!isNewSession()) {
        new_session.set(Boolean.FALSE);
    }

    return s;
}

Answer 1

我已经能够通过在每个Web服务调用上创建新会话来解决问题，尽管使用正在进行的会话。

Web服务调用：行被另一个事务更新或删除（或未保存的值映射不正确）

1 个答案: