RESTful application without web.xml - web-services

Question

I have created a sample project and used EJB 3.1 with a RESTful web service. In the sample I have a class which extends Application. I expect the class works like a servlet and dispatch requests to appropriate classes but it does not. When I use web.xml my sample project works fine. What is wrong with my sample project?
#ApplicationPath("/rest")
public class ApplicationServlet extends Application {
#Override
public Set<Class<?>> getClasses() {
Set<Class<?>> classes = new HashSet<Class<?>>();
classes.add(UserWS.class);
return classes;
}
}
I use UserWS as a EJB session bean which exposes web service:
#Stateless
#LocalBean
#Path("/user")
public class UserWS {
private int count;
public UserWS() {
this.count=0;
}
#GET
#Path("/name/{username}")
public void getUserName(#PathParam("username") String username) {
count++;
System.out.println("count is:"+ count);
}
}

Answer 1

I'm afraid it won't be possible once JBoss 5.0 supports only Servlet 2.5. For more details, see here.
To avoid the web.xml deployment descriptor, you need a servlet container the supports at least Servlet 3.0.
So, what could you do to solve it?
These are the options that came up to my mind:
You could try upgrading the JBoss Web (Tomcat fork used by JBoss AS) as described here, but try that at you own risk.
Consider using a recent version of JBoss/WildFly.