hi, i've a question, how to comunicate from servlet to a JSP and viceversa?

You have a mechanism called "forwarding", with which you can pass control from one resource (servlet/jsp) to another resource (servlet/jsp). You do this using a RequestDispatcher, which you can get from the HttpServletRequest object. If for example you want to forward to "index.jsp" which is in the root of your web application, you would do this in your servlet:

RequestDispatcher rd = request.getRequestDispatcher("/index.jsp");

rd.forward(request, response);

return;

(watch the return statement, you must manually return after a forward, or else the servlet will continue executing!). A forward will NOT create a new request, the same request is passed to the new resource (to create a new request, use a redirect in stead, also done with the RequestDispatcher).

To pass objects between the two resources when doing a forward, use request.setAttribute(), request.getAttribute() and jsp:useBean.

gimbal2a at 2007-7-11 15:38:36 >