PROBLEM USING FILTER TO KNOW SESSION EXPIRATION

Question

Hi, i'm using a filter to know when the session expires but it appeasr not to work, so i am a bit confuse because the filter always executes well but when the session gets the timeout and the user send a request it isnt executed, the server redirects the user to the login page.
I am not sure about it, but is it possible that the reason of why the filter is not executed, is becuase i am using the apache form-authentication????
filter's code:
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest req;
RequestDispatcher disp;
HttpServletResponse res;
boolean userInSession;
String forward = getConfig().getInitParameter("sessionClosed");
req = (HttpServletRequest) request;
res = (HttpServletResponse) response;
System.out.println("InFilter");
userInSession = req.getUserPrincipal() != null;
if(userInSession) {
chain.doFilter(request, response);
System.out.println("Session: " + req.getSession(false).getId());
System.out.println("Session: " + req.getSession(false).getMaxInactiveInterval());
System.out.println("getSessionTime: " + req.getSession(false).getCreationTime());
} else {
disp = req.getRequestDispatcher(forward);
disp.forward(request, response);
     res.sendRedirect("http://www.google.com");
System.out.println("outFilter");
tnks
CERR

Answer 1

Hi Robert,
thanks very much for ur pointers on the AuthFilter class.. will try that out.
Robert Greig <[email protected]> wrote:
Stephen wrote:
I am using WLS 6.1 and tried using a custom filter to intercept theauthentication
request submitted from a FORM BASE jsp (using the j_security_checkform).
However, no matter what i've tried, it is always the authenticationpart that
gets executed before the filter.
Any idea how could I intercept the request before the j_security_checkservlet
calls the security provider for authentication?There is a (now deprecated) class weblogic.servlet.security.AuthFilter.
I haven't used it because it is deprecated but I think it does what
you're after.
In my apps, I make the FORM auth submit to my own servlet which can then
do what j_security_check does (most although not all is accessible
through public APIs).
Robert