Session - setMaxInactiveInterval

Hi aozarov,

I did not do that. I just bind the simple object (JavaBean) to my session. Any idea aozarov?

OBCT > mm...where should I declare the method sessionDestroyed(HttpSessionEvent)?

Regards
Dave

Well,

I think I know what am I doing wrong. I just read our last discussion again aozarov and I think that I did not explore that very well. Let me try to modify my Javabean to implement HttpSessionBindingListener.

Then what does it mean by these two methods?

      public void valueBound(HttpSessionBindingEvent arg0)
      {
            // TODO Auto-generated method stub
            
      }

      public void valueUnbound(HttpSessionBindingEvent arg0)
      {
            // TODO Auto-generated method stub
            
      }

Regards
Dave

In any class that implements the HttpSesssionListener interface.

For example...

public class AppSessionListener implements HttpSessionListener
{
    public void sessionCreated(HttpSessionEvent e) {   }

    public void sessionDestroyed(HttpSessionEvent e)
    {
        // Logic here...
    }
}

And in your web.xml, add:

<listener>
      <listener-class>your.package.AppSessionListener</listener-class>
</listener>

valueBound -> This will be called onced that bean is added to the session
valueUnbound -> This will be called onced that bean is removed from the session (normally because of session timeout
based on max idle time). This is the method where you want to put your DB removal code.

Hi OBCT,

One question....

    public void sessionDestroyed(HttpSessionEvent e)
    {
        // Logic here...
    }

What does e used for?

Regards
Dave

Hi aozarov,

Must it be by bean that implements HttpSessionBindingListener? Can it be any other class? Since the object that I bind to my session is only Javabean. it should not have any business logic to add, edit or delete.

Regards
Dave

The parameter e is the event that has just occured. It has a few small details about the event such as the event's source (which object fired the event) and a reference to the session that has been changed.

Okay,

I got it. Thanks OBCT and auzarov, sorry auzarov that I did not explore well.

Another question. is it possible that in the

    public void sessionDestroyed(HttpSessionEvent e)
    {
        // Logic here...
    }

or

     public void valueUnbound(HttpSessionBindingEvent arg0)
     {
          // TODO Auto-generated method stub
         
     }

for me to get some necessary data from my JavaBean in session just before it is invalidated? because to delete the timestamp, I need to have the userid and password to query DB.

Regards
Dave

Wait..I think that I manage to solve it....1 minute

Regards
Dave

I found the solution. Thanks OBCT and auzarov.

Regards
Dave

For any other users that may have this problem in the future, would you mind posting your solution?

:-)

Absolutely. I will post it in few hours time...lunch time

Okay. First is that you need to modify your class to implement HttpSessionListener. In this case, my class is Struts action class.

public class LoginAction extends DispatchAction implements HttpSessionListener

Then you need to have two methods within the class that implement HttpSessionListener

      /* (non-Javadoc)
       * @see javax.servlet.http.HttpSessionListener#sessionCreated(javax.servlet.http.HttpSessionEvent)
       */
      public void sessionCreated(HttpSessionEvent arg0)
      {
            // TODO Auto-generated method stub
            System.out.println("Executing login module - sessionCreated");
      }

      /* (non-Javadoc)
       * @see javax.servlet.http.HttpSessionListener#sessionDestroyed(javax.servlet.http.HttpSessionEvent)
       */
      public void sessionDestroyed(HttpSessionEvent arg0)
      {
            System.out.println("Executing login module - sessionDestroyed");
            HttpSession session = arg0.getSession();
            Login login = null;
            
            login = (Login)session.getAttribute(Constant.USER_KEY);
            // TODO Auto-generated method stub
            LoginDao logindao = LoginDao.getInstance();
            
            try
            {            
                  logindao.removeTimeStamp(login.getEmail(), login.getPassword());
            }
            catch(Exception e)
            {
                  e.printStackTrace();
            }
      }

Now see, you can get the session and etc for you to modify on.

regards
Dave