GetParameter, setAttribute and session values

Question

I am having a problem forwarding values to a jsp from my servlet.
This problem only occurs when multiple users are accessing the same pages to make a payment.
The value is passed from the page to the servlet.
The servlet gets the value using a getParameter.
//Get the value from the previous page
String DocTotal = request.getParameter("DocTotal");
logger.debug("DocTotal: " + DocTotal);
//set the value to pass to next page
request.setAttribute("payAmount", DocTotal);
displayTemplate(CREDITCARDPAYMENT);
displayTemplate code follows.
RequestDispatcher rd = getServletContext().getRequestDispatcher(template);
rd.forward(req, res);
I then set the value in the request object to pass to the next page.
This all seems to work fine for a single user but when I I have more than one user, one user will get a null for value being passed on the next page and the other user will not get the page displayed.
It is like my session values are getting stomped on by the other user.

Answer 1

The changes that you have suggested seem to work, but I still have a problem.
One user seems to be able to get the data passed successfully to the next jsp, but the other just gets a blank screen. If the user with the blank screen refreshes they get the screen with the data. It is as if the servlet hangs up when calling the page. I am not sure.
Here is the code that is being accessed with formatting.
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
req = request;
res = response;
HttpSession session = req.getSession(true);
logger.debug("Made it to the doPost method of DownloadUtilServlet!");
logger.debug("session: " + session);
String cmd = req.getParameter("cmd");
logger.debug("cmd equals: " + cmd);
if ((cmd != null) && cmd.equalsIgnoreCase("forwardPaymentInfo")){
XCBillerCenterItem bci = null;
try{
logger.debug("XCConfig.CCUSER: " + XCConfig.CCUSER);
bci = new XCBillerCenterItem(XCConfig.CCUSER);
catch(Exception e) {
logger.debug("XCBillerCenterItem Create: " + e);
String ccList = bci.getCCTypes();
req.setAttribute("ccList", ccList);
logger.debug("cmd equals: " + cmd);
String DocTotal = req.getParameter("DocTotal");
logger.debug("DocTotal: " + DocTotal);
req.setAttribute("payAmount", DocTotal);
displayTemplate(CREDITCARDPAYMENT);
}//User has paid, proceed to download
else if ((cmd != null) && cmd.equalsIgnoreCase("downloadreportfilter")){
displayTemplate(DOWNLOADREPORTFILTER);
else{       
GetParameters(req, res, session);
public void displayTemplate(String template)
try
RequestDispatcher rd = getServletContext().getRequestDispatcher(template);
rd.forward(req, res);
catch(Exception e)
e.printStackTrace();