Tip on Specifying GWT-RPC Remote Service Relative Path

Robert Hanson's excellent introduction to a GWT-RPC application got me started, but I bumped into this:

com.google.gwt.user.client.rpc.StatusCodeException:
HTTP ERROR: 404

NOT_FOUND

RequestURI=/relative-path

My fix was to remove the leading slash in the value for setServiceEntryPoint, or to specify it as an annotation on the service interface (again, without a leading slash, as per the example in this Google article). Here's my EntryPoint implementation:

public class MyApplication implements EntryPoint {

    public void onModuleLoad() {

        MyServiceAsync svc = (MyServiceAsync) GWT.create(MyService.class);
        ServiceDefTarget endpoint = (ServiceDefTarget) svc;
        endpoint.setServiceEntryPoint("relative-path"); // omit leading slash! 

        AsyncCallback callback = new AsyncCallback() {
            public void onSuccess(Object result) {
                RootPanel.get().add(new HTML(result.toString()));
            }

            public void onFailure(Throwable ex) {
                RootPanel.get().add(new HTML(ex.toString()));
            }
        };

        svc.myMethod("Do some Stuff...", callback);
    }
}

Alternately, I omit the ServiceDefTarget stuff in the EntryPoint and instead specify it in the service interface:

@RemoteServiceRelativePath("relative-path")
public interface MyService extends RemoteService
{
    public String myMethod(String s);
}

I prefer this approach since it's more consistent with a web services approach.