Book Image

Developing RESTful Services with JAX-RS 2.0, WebSockets, and JSON

By : Bhakti Mehta, Masoud Kalali
Book Image

Developing RESTful Services with JAX-RS 2.0, WebSockets, and JSON

By: Bhakti Mehta, Masoud Kalali

Overview of this book

<p>As the technology landscape moves focus towards smaller devices, the need for building scalable, flexible, lightweight, and real-time communications-based applications grows. HTML 5 and Java EE 7 provide a new synthesis of technologies that demonstrate tremendous scope and potential in areas of device independence, asynchronous communication, interoperability, and portability.<br /><br />Developing RESTful Services with JAX-RS 2.0, WebSockets, and JSON is a practical, hands-on guide that provides you with clear and pragmatic information to take advantage of the real power behind HTML5 and Java EE technologies. This book also gives you a good foundation for using them in your applications.<br /><br />Developing RESTful Services with JAX-RS 2.0, WebSockets, and JSON looks at the different HTML5-based Java EE 7 API, and takes a deep dive into the individual areas of technologies to cover basic to advanced concepts, and also provides best practices for each API. You will also learn how to build a REST-based Event Notification Application using the Twitter API, tying all the different technologies together that we will cover. You will also take a look at integrating different Java EE APIs to build a Library Application. If you want to take advantage of using the new HTML5 technologies and Java EE 7 platform, then this is the book for you. You will learn everything you need to know to build portable RESTful Web Services with JAX-RS 2.0, Web Sockets, JSON, and Server-Sent Events.</p>
Table of Contents (12 chapters)

Emerging standards


With the emergence of requirements and solutions for those requirements, standards emerged to ensure compatibility between different the layers, applications, and components that form a solution; asynchronous communication, and especially event propagation between clients and servers, is one.

Server-sent Events

Server-sent Events (SSE), or sometimes simply referred to as EventSource , is an HTML5 browser API that makes event pushing between server and client available to web application developers. The SSE component provides a structured mechanism for having a capability similar to long polling without some of the long polling drawbacks. As it is an HTML5 component, the browser should support HTML5 SSE to be able to take advantage of this API.

The SSE kernel includes EventSource and Event.

EventSource is the API that provides the client with the means of subscribing to an event source, which can be a Servlet or anything of that sort. After subscription, which is nothing...