Web.xml problem and using of FrontController Pattern

Question

I use FrontController pattern and created servlet ControllerServlet.
I want that when users open my site (for example mysite.com) all requests goes to controller? and even when users enter diretc path to jsp or servlet all requests were sent to ControllerServlet.
in my As I read in "Java Servlet and JSP CookBook" for this I have to write in web.xml file such code:
<servlet-mapping>
  <sevlet-name>ControllerServlet</servlet-name>
  <url-pattern>/*</url-pattern>
</sevlet-mapping>so any requests will be sended to my controller servlet.
But now I have other problem. How I have to call my jsp pages? When I use RequestDispatcher and forward reques to jsp pahe login.jsp, I have error because this request again redirects to controller.
PS For calling servlet I have solve of this problem I just have to add to web.xml file security-constraint element for needed servlets.

Answer 1

You really shouldn't have to map all urls to your ControllerServlet. Set the welcome file in the web.xml to open index.html and in index.html use JavaScript to direct the page to the ControllerServlet. Now as long as you only do RequestDispatcher forwards (no sendRedirects), all hyper links point to the ControllerServlet and all form actions point to the ControllerServlet you are okay. The reason is that the user will nevr see anything else in the browser address other than the ControllerServlet url and should never know the url of any other JSP or Servlet to request them directly.