Page redirect on session empty doesn't seem to work

Question

I'm tryting to redirect back to index.jsp if Session User is null and it doesn't seem to work. When the session is null I do get the response "request.getSession() is null"

JSP code.

<%
    if (null == session.getAttribute("User")) {
        // User is not logged in.  
        out.println("request.getSession() is null");
        String site = new String("http://localhost:8080/myproject/");
        response.setStatus(response.SC_MOVED_TEMPORARILY);
        response.setHeader("Location", site);
    }
%>

any help would be greatly appreciated!

Answer 1

This might help

URL newUrl = new URL("yourURL");
String url = newUrl.toString();
response.setStatus(response.SC_MOVED_TEMPORARILY); 
response.setHeader("Location", url);