INTERACTIVE WEB SERVICES WITH JAVA

Request Dispatcher

Services are often composed of many Servlets (and JSP pages) working together.

Forwarding a request to another Servlet using RequestDispatcher:
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/my_other_app/servlet/SomeServlet"); dispatcher.forward(request, response);

request.setAttribute(String,String) can be used to supply extra data to the new handler

forward - complete transfer of control to another Servlet
include - insert result from running another Servlet (another kind of "wrapping")