Problem with sendRedirect(..)

Question

Hi,
here is my problem:
I want to log in the user. I have login form, then I send request to the LoginServlet which verifies data and set session attribute (session.setAttribute("isLogin", "true")), then, if user and password is correct I use sendRedirect method to forward user to next page (somePage.jsp which contains an applet), and until now everything is ok.
But when someone wants to use somePage.jsp without login it should check the session logIn attribute and if it is null it should forward to loginPage. Here is the servlet code which gets requests from somePage.jsp:
public void doGet(HttpServletRequest request,HttpServletResponse response)
     throws ServletException, IOException{
          HttpSession session = request.getSession();
          Object done = session.getAttribute("logIn");
          if (done==null){//if user isn't logged
               response.sendRedirect("/loginPage.html");
               return;
//user is logged
          if (session.getAttribute("someAttribute")==null)
          //... do something else
And in this case sendRedirect method doesnt show loginPage. Maybe it's because an applet which is on somePage.jsp?
I'm gratefull for any help.

Answer 1

Hi,
You look like you are losing you context root.
When you send the redirect to "/loginPage.jsp", is means to send your page to something like "http://localhost:8080/loginPage.jsp", using the glassfish default hostname and port. I don't believe your page is located there.
You want to try redirecting to "./loginPage.jsp" ( a period "." in front of the slash), this will use the same directory as the page that sent the request.
You may also want to look at the RequestDispatcher that you get from the request to forward the page internally, so you don't have to send extra data over the net.
There is an excellent JavaEE5 tutorial that may help you when researching these type of problems located at http://java.sun.com/javaee/5/docs/tutorial/doc/.
Hope this helps...
Thanks - Mark