Hi all!
I have an application with a Controller Servlet which is invoked every time
a user request arrives to redirect to a specific JSP.
What I want to do is displaying a special information page, when the session
of a user expires.
Therefore I use the following code in the controller servlet:
HttpSession session = request.getSession(true);
System.out.println("FrontComponent - Session id: " + session.getId());
if (session.isNew()) {
System.out.println("Session " + session.getId() + " is new.");
System.out.println("Seconds until session times out: " +
session.getMaxInactiveInterval() + " s");
session.setAttribute("sessionState", new JSPSessionState());
}
The JSPSessionState object implements HttpSessionBindingListener and
provides the implementation of the following methods:
public void valueBound(HttpSessionBindingEvent event) {
System.out.println("JSPSessionState - bound to session " +
event.getSession().getId());
}
public void valueUnbound(HttpSessionBindingEvent event) {
System.out.println("JSPSessionState - unbound from session " +
event.getSession().getId());
}
I use Tomcat v3.3 as servlet engine and I have set the session timeout
interval to 1 minute.
What I do now is starting the application, and request a page. The servlet
tells me the id of my session and that it is a new one. So far, so good.
Then I wait longer than a minute. The session times out, I do another
request and now I have another session id, also a new one.
What I don't understand is:
The method valueBound() is called when I start a session but the method
valueUnbound() doesn't seem to be called when the session times out because
there'e nothing written to standard out.
What am I doing wrong?
Perhaps someone can help me here. Thanks in advance.
Stefan
Novedia AG, Stefan Aigner
Hardenbergstrasse 19, D-10623 Berlin, Germany
tel:+49.30.311889-0, fax:+49.30.311889-19
mailto:[EMAIL PROTECTED], http://novedia.de
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