JAX-RS

Restlet includes a client API that makes it easy to consume any remote HTTP-based services, not just JAX-RS services.

Annotation-based injection often used by JAX-RS resource classes may not be supported in the case of a singleton instance.

When vraptor3 came out, we were not sure whether it should be a JAX-RS implementation or not.

The last thing you need to do to complete the JAX-RS story is show the configuration needed to wire all of it up.

I got involved with JAX-RS because I thought it was the least intrusive way to help you write RESTful services.

So far, all I've talked about in Listing 1 are the JAX-RS annotations that set up the routing and data serialization for the service.

Set only one of the media types, which corresponds to the media type produced in the JAX-RS web service, in the Accept header.

Finally, this article helps you select the right framework for your needs by analyzing and reviewing the different JAX-RS implementations.

As you can see from the servlet declaration, the application is using Jersey, the reference implementation of JAX-RS.

So, what are the main areas used to compare these different JAX-RS implementations?

Although the REST support is not an implementation of JAX-RS, it has more features than the specification defines.

You'll use Apache Maven, a software management tool, to build the Android project for a Spring client for the Android JAX-RS web service.

JAX-RS itself does not provide a client API, but Wink includes its own model for a client API that is completely resource-centric.

This application will get you through setting up the environment and will cover the basics of Jersey and JAX-RS.

It adds support for the new JAX-RS (JSR-311) standard which allows you to build RESTful services by annotating your classes.

The java version and how it could relate to the JAX-RS standard is addressed in the next question.

Determine the native integration support of the JAX-RS implementation framework you've chosen with third-party components.

Hence, client architecture and framework become a crucial attribute when selecting a JAX-RS implementation.

For a complete list of the annotations provided by the JAX-RS specification, see the JSR-311 link in the Resources section.

This is all you have to do to use JAX-RS to expose this class to web clients.

Therefore, use of a singleton instance for JAX-RS resources should be avoided unless carefully planned.

See the Resources below for a list of helpful links to get you on your way to creating RESTful services using Dojo and JAX-RS.

Run the SpringAndroid application on the emulator to output the XML message received from the JAX-RS web service as shown in Figure 18.

RESTEasy and JAX-RS exist to help you write RESTful web services and clients.

You used several key technologies to remove tedious boilerplate code both from the server side and the client side: JPA, JAX-RS, and Dojo.

RESTEasy uses listener objects called interceptors, which can intercept JAX-RS calls and reroute them.

Here you once again use Dojo's Ajax utilities to access data provided by the JAX-RS end point created earlier.

The four current JAX-RS implementations provide Spring integration, even JBoss's RESTEasy.

The JAX-RS User libraries are added to the project, and the JAX-RS Servlet and the Servlet mapping are configured in web. xml.

In this section you'll create an Android project in which you create the JAX-RS client for Android.

JAX-RS establishes a vernacular to describe resources as represented by its programming model.

This too uses the JAX-RS annotations to bind the after parameter to the query string parameter called after.

The JAX-RS User libraries get added to the project, and the JAX-RS servlet and servlet mapping get configured in web. xml.

In this update, RAD added a JAX-RS facet that you can configure to support validators and annotation assistance.

JAX-RS runtimes natively support the same types for deserialization as they do for serialization.

Apache Wink clients are built on JAX-RS principles and encompass REST-based concepts and standards.

According to the JAX-RS specification, by default, provider and resource classes are instantiated once for each JAX-RS application.

You will create a Spring client for a JAX-RS web service resource in this section.

You create an Android project in which you create the Spring client for Android to access the JAX-RS web service.

I ran the performance test separately on every JAX-RS implementation framework.

If multiple methods match a request URI, the JAX-RS selection algorithm is used to select the resource method.

In the interface, you localize the JAX-RS annotations and add a class to implement the interface.

JAX-RS automatically translates between Java types and MIME media types.

The media type should match the media type produced by the JAX-RS web service.

Now, how are these classes configured within a JAX-RS runtime?

This file contains a list of all the classes and objects that JAX-RS is supposed to deploy.

InfoQ: What do you think about standard, since your post is really about restfulie versus JAX-RS?

I'm interested in comparing the following aspects of the JAX-RS implementations that extend beyond "pure" JAX-RS.

The JAX-RS specification puts a lot of value into HTTP and URIs but leaves a lot of space for hypermedia constraints.

It is a fully certified and portable implementation of JAX-RS specification.

JAX-RS is the new specification that was defined to simplify REST-based Java development.

The Android AVD starts and the JAX-RS client application installs on the Android device, as in Figure 12.

I used RESTEasy because I was able to grok the code-base quicker than the other JAX-RS implementations.

The servlet-class will likely be the JAX-RS runtime system servlet.

In this article, you created a Spring client for an JAX-RS web service using the Spring Android plugin.

It is easy to use and production ready, and it provides a set of features that enhances the core JAX-RS specification.

Of course, you need the DAOs to be discovered so that JAX-RS can route requests to them.

All JAX-RS services require this annotation.

JEST's approach is noninvasive to persistent resources, as opposed to other approaches with similar intent, such as JAX-RS.

In this article, learn about the major components of JAX-RS.

In this article, you learned how to create a JAX-RS web service and invoke the web service from an Android client.

Running a JAX-RS service in an embedded mode is easy and simple and requires only a few lines of code.

For the server-side implementation, you have the JAX-RS library based on the Apache Wink project.

Serializes and de-serializes resources using configurable JAX-RS providers