Forwarding A Servlet Post Variables

Question

Hello, I'm trying to forward some posted variables from form A to this servlet where I am adding one more then forwarding it on. How can I get it to forward and show up in the URL window instead of how I'm doing it here with the servlet context?
package com.shoponlinesecure.order;
   import java.io.*;
   import javax.servlet.*;
   import javax.servlet.http.*;
   import java.util.*;
   public class AddHashAndForward extends HttpServlet {
      public void doPost(HttpServletRequest request,
      HttpServletResponse response)throws ServletException, IOException {
         response.setContentType("text/html");
         PrintWriter out = response.getWriter();
         HttpSession session = request.getSession(true);
        out.write(AuthorizeNetFingerPrint.insertFP("wil481306225","AMONaKPAIXGdLUgB","10.50",
        "789", null));
        out.close();
        RequestDispatcher dispatcher =
        getServletContext().getRequestDispatcher("https://secure.authorize.net/gateway/transact.dll");
        dispatcher.forward(request, response);
      }-thanks

Answer 1

This is basically what I'm trying to do in java without any javascript. They have this thing as you can see called a <%ret variable%> that only gets executed when you hit the submit button. I'm trying to do it the way I am becuase I do not want to use javascript to simulate the asp ret variable. So I thought I forwarded it to a servlet that added it then forwarded it to the gateway I would be ok?
Example 1 � Minimum requirements for requesting a Payment Form
The following HTML code along with the server-side script represents the minimum data that would need to be inserted into a page to provide a connection to the system. It shows that the fingerprint, time stamp, and the sequence number are inserted into the HTML form POST along with Login ID and other required fields. The result of this HTML code snippet is a button. Clicking on the button will take the user to the gateway�s Payment Form.
A call to generate the fingerprint should be made when the button is clicked and before the Payment Form request is made to the gateway. A sequence number should be generated and the total amount of the tranaction calculated before the call to generate the fingerprint is made. The function used to generate the fingerprint takes these fields (amount, transaction key, Login ID, and sequence number) The transaction amount should not change after the fingerprint is generated. All trailing spaces need to be removed from the fields used to generate the fingerprint
<!--#INCLUDE FILE="simlib.asp"-->
<FORM METHOD=POST ACTION="https://secure.authorize.net/gateway/transact.dll">
<% ret = InsertFP (loginid, txnkey, amount, sequence) %>
<INPUT TYPE=HIDDEN NAME="x_login" VALUE="your login ID goes here">
<INPUT TYPE=HIDDEN NAME="x_show_form" VALUE="PAYMENT_FORM">
<INPUT TYPE=HIDDEN NAME="x_amount" VALUE="amount goes here">
<INPUT TYPE=SUBMIT VALUE="Click here for secure payment form">
</FORM>
The function InsertFP is provided by the gateway and can be downloaded from the Merchant Interface. This function must be called within a server-side script on the merchant Web server. The above example shows the call being made in an ASP scripting environment.