Session already invalidated

Question

I am running into an occasional session problem with one of my servlet applications. When this problem occurs, the HttpSession.setAttribute() method throws an IllegalStateException that the session has already been invalidated. My question is how do I handle this Exception. I would like to either revalidate the session, or just give the user a new session. See the code snippet below:
public void service (HttpServletRequest req, HttpServletResponse res) {
HttpSession session = req.getSession(true);
try {
session.setAttribute("mykey", "myvalue");
catch (java.lang.IllegalStateException ex {
//help requested here...
//revalidate session or new session (assign to ServletRequest or ServletResponse??)
}

Answer 1

i think you won't be able to revalidate a ones invalidated session. invalidating a session includes dropping all session attributes...
but normally the code
req.getSession(true)you are already using should create a new Session object for the client if
a) it didn't get a session yet
b) its session has been invalidated
sorry...