The work in the Expert Group for JSR 371 progresses and here is a small update. A couple of decisions have been made and the most important one is that the JSR will be layered on top of JAX-RS. The decision was made by voting between this and the alternative of layering it on top of the Servlet API.

What this means for you as a developer is that the stuff you are familiar with from JAX-RS is directly transferable to MVC. As you can see in the simple example below, the only thing that differs from JAX-RS is the @Controller and @View annotations.

Note that this code is highly experimental and will most likely change as the work with the specification continues.

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

import javax.mvc.Controller;
import javax.mvc.View;

@Path("count")
public class CountController {

   @GET
   @Controller
   @Produces("text/html")
   @Path("{id}")
   @View("counter.jsp")
   public void view(@PathParam("id") String id) {
   }
}

A more complete example with a little more details can be found at https://github.com/ivargrimstad/mvc-samples. I will continue evolving this example as we go.

The latest versions of the spec and reference implementation can be found here:

• Specification: https://java.net/projects/mvc-spec/pages/Home
• Reference Implementation: https://ozark.java.net/