Sending Cookie to JSP Through Servlet

Question

I am trying to read a cookie through JSP and cookie is defined in Servlet.
Here is what happening?
First JSP, user click on a hyperlink to select a category and that invokes servlet. Servlet has to pass selected category to another JSP page through a cookie.
Here is the code for Servlet
Cookie c1 = new Cookie("selectedCatgId", catgId);
response.addCookie(c1);
Target is a JSP, which I am calling through
RequestDispatcher dispatcher;
dispatcher = request.getRequestDispatcher("target.jsp");
In target.jsp, when I am reading the Cookie
Cookie cookies[] = request.getCookies();
Cookie currCookie;
if (cookies != null) {
for (int i=0; i<cookies.length; i++) {
currCookie = cookies;
if (currCookie.getName().equals("selectedCatgId")) {
parentCatgId = currCookie.getValue();
This shows me one previous value of the cookie, not the current value I passed through the servlet. Not what I set in servlet.
Can anybody help in this? I am not sure where I am wrong?
Thanks, Vikas

Answer 1

You are passing information on the server side. So, you should use attributes and not cookies.
Also, take a look:
Cookie c1 = new Cookie("selectedCatgId", catgId);
response.addCookie(c1); //here you added a new cookie that has not been sent to the client yet
RequestDispatcher dispatcher;
dispatcher = request.getRequestDispatcher("target.jsp"); //Here you called a new JSP page. A server side operation.
Cookie cookies[] = request.getCookies(); //Here you are reading a cookie sent by the client. But the c1 has not been sent to the client yet. So you didnt get this cookie on the request.