RESTful Java Web Services, Second Edition: Design scalable and robust RESTful web services with JAX-RS and Jersey extension APIs

Jobinesh Purushothaman

$48.99

4.1 (10 Ratings)

Paperback Sep 2015 354 pages 1st Edition

Jobinesh Purushothaman

$48.99

4.1 (10 Ratings)

Paperback Sep 2015 354 pages 1st Edition

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RESTful Java Web Services, Second Edition

Chapter 2. Java APIs for JSON Processing

In the previous chapter, you were introduced to the REST architectural style. Remember that REST does not prescribe any specific message format for client-server communication. One can use an appropriate format for representing messages as long as the chosen format is supported by HTTP. XML and JSON are the two most popular formats used by RESTful web services today. Out of these two formats, JSON has been widely adopted by many vendors because of it is simple and lightweight. In this chapter, you will learn more about the JSON message format and various processing tools and frameworks related to JSON.

The following topics are covered in this chapter:

A brief overview of JSON
Using the JSR 353—Java API for processing JSON
Using the Jackson API for processing JSON
Using the Gson API for processing JSON

Using the Gson API for processing JSON

Gson is an open source Java library that can be used for converting Java objects into JSON representations and vice versa. The Gson library was originally developed by Google for its internal use and later open sourced under the terms of Apache License 2.0.

Tip

To find out the dependencies of Gson APIs, refer to https://sites.google.com/site/gson/gson-user-guide/using-gson-with-maven2.

Processing JSON with object model APIs in Gson

The main class in the Gson library that you will use for building an object model from the JSON data is the com.google.gson.Gson class. Here is a list of the core Gson classes from the object model API category:

Class	Description
`com.google.gson.GsonBuilder`	This class is useful when you need to construct a `Gson` instance, overriding the default configurations such as custom date format, pretty printing, and custom sterilization.
`com.google.gson.Gson`	This class is the main class for using Gson. This class does the conversion...

Description

REST (REpresentational State Transfer) is a simple yet powerful software architecture style to create scalable web services and allow them to be simple, lightweight, and fast. The REST API uses HTTP and JSON, so that it can be used with many programming languages such as Ruby, Java, Python, and Scala. Its use in Java seems to be the most popular though, because of the API's reusability. This book is a guide to developing RESTful web services in Java using the popular RESTful framework APIs available today. You will begin with gaining an in-depth knowledge of the RESTful software architectural style and its relevance in modern applications. Further, you will understand the APIs to parse, generate, transform, and query JSON effectively. Then, you will see how to build a simple RESTful service using the popular JAX-RS 2.0 API along with some real-world examples. This book will introduce you to the Jersey framework API, which is used to simplify your web services. You will also see how to secure your services with various authentication mechanisms. You will get to grips with various solutions to describe, produce, consume, and visualize RESTful web services. Finally, you will see how to design your web services to equip them for the future technological advances, be it Cloud or mobile computing. By the end of this book, you will be able to efficiently build robust, scalable, and secure RESTful web services, making use of the JAX-RS and Jersey framework extensions.

Who is this book for?

If you are a web developer with a basic understanding of the REST concepts but are new to the idea of designing and developing RESTful web services, this is the book for you. As all the code samples for the book are written in Java, proficiency in Java is a must.

What you will learn

Introduce yourself to the RESTful software architectural style and the REST API design principles
Make use of the JSR 353 APIs and Jackson API for JSON processing
Build portable RESTful web APIs, making use of the JAXRS 2.0 API
Simplify API development using the Jersey extension APIs
Secure your RESTful web services with various authentication and authorization mechanisms
Get to grips with the various metadata solutions to describe, produce, and consume RESTful web services
Understand the design and coding guidelines to build wellperforming RESTful APIs
See how the role of RESTful web services changes with emerging technologies and trends

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Amazon verified reviews

Devendra S. Apr 18, 2019

Good quality

Amazon Verified review

Sachin Sathaye Jan 09, 2017

Great book for anyone who needs to know inside out about how to build Restful services. This book starts with introduction to REST architecture and then takes you into the exciting journey of REST universe that includes design, coding, best practice and real-life use cases. I would highly recommend this book for anyone who wants to know how to build scalable application using REST services.

Albertazzi Angelo Sep 18, 2016

Well written book, rich, useful and very clear. I also suggest reading "RESTful Java with JAX-RS 2.0". They complete each other.

VINAY AGARWAL Nov 19, 2015

This is one of the good book available in the market today to begin your journey with REST API development using Java. Chapter 1, introduces you to basics of RESTful web APIs. Chapter 2, teaches you JSON and JSON parsers. The first two chapters are introductory and easy to follow. You may truly enjoy these chapters if you are new to REST. Chapter 3 , introduces you to JAX-RS and Chapter 4 takes you to advanced topics in JAX-RS. Chapter 5, takes you through some of the Jersey offering which you may find very useful while dealing with many real life use cases. Chapter 6 introduces you to security - not in depth, however basics are covered very nicely. Chapter 7 teaches common formats used for Description and Discovery of RESTful Web Services. I'm not aware of any other book on Java REST API covers this topic. Chapter 8 gives you some useful tips for designing REST API- another well written chapter. You will also find downloadable code samples for each chapter in the Packt Pub site, which makes your life easier while learning complex topics such as building custom entity types. Overall this is great asset for anyone who want to learn(beginner or intermediate) RESTful web API development using JAX-RS.

Cliente de Kindle Aug 05, 2017

very well.

RESTful Java Web Services, Second Edition: Design scalable and robust RESTful web services with JAX-RS and Jersey extension APIs

What do you get with Print?

RESTful Java Web Services, Second Edition

Chapter 2. Java APIs for JSON Processing

A brief overview of JSON

Understanding the JSON data syntax

Processing JSON data

Using JSR 353 – Java API for processing JSON

Tip

Processing JSON with JSR 353 object model APIs

Using the Jackson API for processing JSON

Tip

Using the Gson API for processing JSON

Tip

Processing JSON with object model APIs in Gson

A brief overview of JSON

Understanding the JSON data syntax

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