How to read post parameters using JS/Jquery

Question

I have integrated a payment gateway with a Java based Web-App Now, After a successful and failure transaction, PG accordingly redirect to respectively html pages failure.html,success.html with form data. How can i read and use this data. I have no clue,, need help guys.

   General
    Request URL:http://www.educationxpress.in/failure.html
    Request Method:POST
    Status Code:200 OK
    Remote Address:43.242.215.132:80
  Response Headers
   view source
   Accept-Ranges:bytes
   Connection:Keep-Alive
   Content-Encoding:gzip
   Content-Length:2461
   Content-Type:text/html
   Date:Mon, 21 Mar 2016 11:44:23 GMT
   ETag:W/"7124-1458556448000"
   Last-Modified:Mon, 21 Mar 2016 10:34:08 GMT
   Server:Apache-Coyote/1.1
   Vary:Accept-Encoding
  Request Headers
   view source
   Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.     8
    Accept-Encoding:gzip, deflate
    Accept-Language:en-US,en;q=0.8
    Cache-Control:max-age=0
    Connection:keep-alive
    Content-Length:1087
    Content-Type:application/x-www-form-urlencoded
    Host:www.xywevbsite.in
    Origin:null
    Upgrade-Insecure-Requests:1
    User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36    (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36
  Form Data
    view source
    view URL encoded
    mihpayid:550690310 
    mode:DC
    status:failure
     unmappedstatus:failed

    txnid:f63fdb227b24393099dc
    amount:45.0
    addedon:2016-03-21 17:12:37
    productinfo:Rabbit 
    firstname:Mohit

Need help on how to read this response????

Answer 1

When Integrating with payment gateways or in general when you receive a
redirection URL based on server response.Simply map your URL in controller or in Servlet.

This way you can access the request parameters and based on parameter and other
information you can redirect the page.

Example: I've provided http://www.localhost.in/failure
Map above url in your controller

  @RequestMapping(value = "/failure.do", method = RequestMethod.POST)
public void pgResponse(@RequestBody ResonseBean bean, HttpServletRequest request, HttpServletResponse response )
{
  try
  {
   // Here you can extract the parameters from POST request.
  String amount = (String) request.getParameter("amount");
  String addedon = (String) request.getParameter("addedon");
  String productinfo = (String) request.getParameter("productinfo");
  String firstname = (String) request.getParameter("firstname");

  // Do you business here
  //  Redirect when you're done


  }
  catch ( Exception e )
  {

  }

}

Or You can simply bind a Servlet in your not using Spring MVC, Spring Boot.

In JSP Environment,
Simply use scriptlet in jsp page.For Example:

<%

 String amount = (String) request.getParameter("amount");
 String addedon = (String) request.getParameter("addedon");
 String productinfo = (String) request.getParameter("productinfo");
 String firstname = (String) request.getParameter("firstname");

%>
<script type="javascipt">
// Get java variable value in js
var amount = <%=amount %>;
var addedon  = <%=addedon%>;
var productinfo = <%=productinfo %>;
var firstname = <%=firstname %>;
</script>

There are multiple way for this problem and it's subject to stack that you're using.