I deploy a webapp on two different containers (Tomcat and Jetty), but their default servlets for serving the static content have a different way of handling the URL structur
I found great tutorial on the web about some workaround. It is simple and efficient, I used it in several projects with REST urls styles approach:
http://www.kuligowski.pl/java/rest-style-urls-and-url-mapping-for-static-content-apache-tomcat,5