Session Related Question

[JiaPei Jen]

Is it possible to do the following:

   HttpSession session = request.getSession();  
   session.setAttribute( "name", request.getParameter( "username" ) );
   session.setAttribute( "class", request.getParameter( "category" ) );
   session.setAttribute( "time", request.getParameter( "time_stamp" ) );

and then

   HttpSession session = request.getSession(false);
   String username = (String)session.getAttribute( "name" );
   String category = (String)session.getAttribute( "class" );
   String time_stamp = (String)session.getAttribute( "time" );

[B Mampilli]

Hi,
Yes it should work.
HttpSession session = request.getSession(false);This does not invalidate the current session.
request.getSession with the parameter as false returns the currently valid session if any otherwise it returns null.
As, there is a session existing, it will return it and so the values in the session would be available.

[vijaykumar shah]

Hello,
Yes it will definately work..... and it should work irrespective of
HttpSession session = request.getSession(true/false).
vijay

[Malli Raman]

You can try this servlet for better understanding.
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class SessionServlet extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{

PrintWriter out = response.getWriter();
response.setContentType("text/html");

HttpSession session = request.getSession();

session.setAttribute("name", "1");

//session.invalidate();

HttpSession session1 = request.getSession(false);
System.out.println("Session1** : " + session1);
HttpSession session2 = request.getSession(true);
System.out.println("Session2** : " + session2);
String name = null;
try

{
name = (String)session1.getAttribute("name");
if (name == null)
{
name = "2";
}
}
catch(NullPointerException nu)
{

if (name == null)
{
name = "3";
}
}

out.println("Name " + name);
}
}

Regards,
M.S.Raman