servlet is session id Expired - Java javax.servlet.http

Java examples for javax.servlet.http:HttpSession

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Description

servlet is session id Expired

Demo Code


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class Main{
    public static boolean isExpired(HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        HttpSession sess = request.getSession(false);
        String sessId = null;//from ww w  . ja  va2  s .  c o m
        if (sess != null) {
            sessId = sess.getId();
        } else {
            //Fix: for those browsers not supporting cookies
            sessId = request.getHeader("JSESSIONID");
            response.setHeader("Set-Cookie", "JSESSIONID=" + sessId);
        }
        if (!SessionListener.isAlive(sessId)) {
            response.setStatus(401);
            response.getWriter().write("Session expired");
            response.flushBuffer();
            return true;
        }
        return false;
    }
}

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