All default variables that are exposed by the jsp engine
are not accessible inside <%! %>.
Have a look at the generated source and you get a better
understanding what happens:
class foo ... {
public void _jspService(...) {
...
HttpSession session = null;
...
}
public void jspDestroy() {
// Doesn't see session
}
}
So session (and all other implicit variables) are local
to the _jspService method.
To solve your problem you are on the wrong path.
What solves the problem depends on what you mean with
'leave a page'. If you just wan't to perform an action
after every thing else is done on the page you can use
a try/finally block to do it.
<%
try {
%>
Some HTML + Scriplets + expressions
<%
} finally {
// No matter what happens in the try block
// Do what ever should be done a last part of the request
}
%>
If you mean a user has clicked to another page, there is nothing
you can do in the current jsp to do a clean up.
The jsp_destroy method is called under conditions, that doesn't
have anything to do with the action a user performs.
If you want something like that, you have to perform the cleanup
in the other page or you have implement a filter that will do the
cleanup.
Maybe you mean something complete different ? Then you should
provide more info about what the intentions why and when you want
to delete the property.
> -----Ursprüngliche Nachricht-----
> Von: Raphael Di Cicco [mailto:[EMAIL PROTECTED]]
> Gesendet: Freitag, 5. Juli 2002 11:21
> An: Tomcat Users List
> Betreff: JSP destroy problem
>
> But it seems I have no access to session :
>
> "Undefined variable or class name: session"
>
> Anyone have any idea how to do that ?
>
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