java - Wrap the default servlet but override the default webapp path

Question

I have a folder of static html,imgs,flash content that lives outside of the webapp folder. Right now I'm using a symbolic link to map that folder into my webapp directory. The problem i have is when I undeploy my application it follows the symbolic link and deletes all these files.

One of the solutions I'm trying to implement is a special servlet that wraps the default servlet but uses a different relative path. I'm having trouble finding out how to wrap the default servlet in a way that overrides the default servlet path.

Here is what I'm working with:

public void doGet(final HttpServletRequest req, final HttpServletResponse resp)
    throws ServletException, IOException {
    final RequestDispatcher rd = getServletContext().getNamedDispatcher("default");
    final HttpServletRequest wrapped = new HttpServletRequestWrapper(req) {

        @Override
        public String getServletPath() {
            return "/usr/depot/repository";
        }
    };

    rd.forward(wrapped, resp);
}

Answer 1

You can override DefaultServlet with your own implementation. You can perfectly subclass it, it's a public class. Here are the functional specifications of the DefaultServlet, you need to adhere it.

On the other hand you can ignore DefaultServlet and go for your own solution, an example can be found here.