URI rewriting add unwanted context path

Question

I have my app to find resource at

http://myhost/my-app/test/bat

and it works good, now have this a new request to

http://myhost/my-app/xxx/test/bat, 

I simply want it rewrited to the old one, so I creat a filter:

if(uri.endsWith("/xxx/test/bat")){
     uri=uri.replace("/xxx/test", "/test");
     request.getRequestDispatcher(uri).forward(req, res);
  }
 else
     chain.doFilter(req, res);

but the tomcat container rewrite the url to:

http://myhost/my-app/my-app/test/bat

/my-app is the contextPath

why I got this extra my-app? where did I go wrong?

Answer 1

How are you getting your uri value? what is it's value? I suspect it might be "/my-app/xxx/test/bat". When you use request.getRequestDispatcher if the path begins with a "/" it is interpreted as relative to the current context root.