How to call RESTFUL services from GWT?

Question

I\'m using GWT as web development framework. I need to access some REST services from my GWT client code. Also I need to parse JSON (or maybe XML) which is response format o

Answer 1

RequestBuilder is a low-level approach to make HTTP requests.

You can resort to a higher level approach working with Turbo GWT HTTP, a convenient API for managing client-server communication and performing requests fluently.

It fits better the REST style communication. Consider the following example:

Request request = requestor.request(Void.class, Book.class)
        .path("server").segment("books").segment(1)
        .get(new AsyncCallback() {
            @Override
            public void onFailure(Throwable caught) {

            }

            @Override
            public void onSuccess(Book result) {
                Window.alert("My book title: " + result.getTitle());
            }
});

There's no need to map your REST services before calling them (which is conceptually required for RPC communication, but not for REST). You can just consume your services on demand.