Here is a small but working example.
In the servlet, I put something like:
CMFSSession medianSession=null;
medianSession = (CMFSSession)
session.getValue("cmfssession");
if (medianSession == null) {
medianSession = new CMFSSession();
session.putValue("cmfssession", medianSession);
}
medianSession.setMSession(data1.getMSession(session.getId()));
With the following CMFSSession implementation:
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Jean-Michel Augusto
*/
public class CMFSSession implements HttpSessionBindingListener {
int medianSession = -1;
public CMFSSession() {
}
protected void finalize() {
medianSession = -1;
}
public synchronized void setMSession(int msession) {
medianSession = msession;
System.err.println("CMFSSession setmession with
id="+medianSession);
}
public int getMSession() {
return medianSession;
}
/**
*/
public void valueBound(HttpSessionBindingEvent event) {
String objName = event.getName();
HttpSession session = event.getSession();
System.err.println("CMFSSession bound with name =
"+objName+
" and session="+session.getId()+ " and
id="+medianSession);
}
/**
* function called when the object is unbound from the session
*/
public void valueUnbound(HttpSessionBindingEvent event) {
String objName = event.getName();
HttpSession session = event.getSession();
System.err.println("CMFSSession unbound with name =
"+objName+
" and session="+session.getId()+ " and
id="+medianSession);
CMFSdataAcq tempo = new CMFSdataAcq();
if (medianSession>=0) {
tempo.deleteMSession(medianSession);
}
}
}
Please note that all during the valueBound, the code does
nothing excepting logging in err (I am currently debugging my
application:-))) ) but during the unbound event, I remove the session
data (represented here by the CMFSdataAcq).
Hope this help
Friendly,
Jean Michel
[EMAIL PROTECTED]
> -----Original Message-----
> From: Sue Ho [mailto:[EMAIL PROTECTED]]
> Sent: Monday, May 10, 1999 17:09
> To: [EMAIL PROTECTED]
> Subject: Re: How to know when an user logout??
>
>
> do you have some examples to share? thanks
>
> -----Original Message-----
> From: Michael Caines [SMTP:[EMAIL PROTECTED]]
> Sent: Saturday, May 08, 1999 12:07 PM
> To: [EMAIL PROTECTED]
> Subject: Re: How to know when an user logout??
>
> You can also use the HttpSessionBindingListener interface if
> you want a class
> to be notified when objects are added to and/or removed from
> an HttpSession.
> You could use this to gracefully close DB connections, etc.
> when objects are
> removed from the session. Objects can be removed from the
> session either
> explicitly by the programmer, or by the servlet engine after
> the time-out
> period has elapsed.
>
> Michael
>
>
> Gilad Tiram wrote:
>
> > Hello Andreas,
> >
> > You can save the user resources in Session which is
> actually will take
> > resources on the client side.
> > I think that this session is killed automatically after
> some time out.
> >
> > Gilad.
> >
> > -----Original Message-----
> > From: Andres Portillo [SMTP:[EMAIL PROTECTED]]
> > Sent: Monday, May 03, 1999 7:14 PM
> > To: [EMAIL PROTECTED]
> > Subject: How to know when an user logout??
> >
> > Hi everybody:
> >
> > Do you know if there is way to know when a user
> is not longer
> > using
> > a servlet (like a logout). By example an user
> > login in my servlet, when this happen the servlet
> creates some
> > resources
> > and save handles to that resources in the session
> > associated with that user. I'd would like to know
> when the user
> > logout
> > (shutdown the browser, or go to another web page)
> > so the servlet can release those resources...
> >
> > I would appreciate any help.. Thanx
> >
> > Andres Portillo
> >
> >
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