Servlets :: If URL Already Points To A Resource - Can Servlet Still Be Mapped By This URL?

I have a link with URL say "/atom/filename.link" on one webpage on my server. On clicking it, a response will return in XML format.

In the XML there is information like:

<library id = "123" path =""/>
<document id = "1234" path =""/>

With this information I can generate a URL to another link, say /libray?id=123/document?id=1234

Now I would like to realize a function so that on clicking this link, it will be automatically redirected to that new link, which is generated from the XML file.

At first I try to use a servlet/filter in a web-app and then deploy it on the server, inside this servlet/filter I make a new URL connection with the same request URL and retrieve the response and the parse the XML data. But now the request URL points to the servlet now, not the actual XML file.

For example, if I set the set the servlet-mapping to /atom, If I try to connect to the URL /atom/filename.link inside the servlet, will it still be directed to this servlet? It's like a loop, and the real content can never be reached because now the servlet occupies its path.