Book Image

RESTful Java Web Services - Third Edition

By : Balachandar Bogunuva Mohanram, Jobinesh Purushothaman
Book Image

RESTful Java Web Services - Third Edition

By: Balachandar Bogunuva Mohanram, Jobinesh Purushothaman

Overview of this book

Representational State Transfer (REST) is a simple yet powerful software architecture style to create lightweight and scalable web services. The RESTful web services use HTTP as the transport protocol and can use any message formats, including XML, JSON(widely used), CSV, and many more, which makes it easily inter-operable across different languages and platforms. This successful book is currently in its 3rd edition and has been used by thousands of developers. It serves as an excellent guide for developing RESTful web services in Java. This book attempts to familiarize the reader with the concepts of REST. It is a pragmatic guide for designing and developing web services using Java APIs for real-life use cases following best practices and for learning to secure REST APIs using OAuth and JWT. Finally, you will learn the role of RESTful web services for future technological advances, be it cloud, IoT or social media. By the end of this book, you will be able to efficiently build robust, scalable, and secure RESTful web services using Java APIs.
Table of Contents (11 chapters)

Implementing partial response

Partial response refers to an optimization technique offered by the RESTful web APIs to return only the information (fields) required by the client. In this mechanism, the client sends the required field names as the query parameters for an API to the server, and the server trims down the default response content by removing the fields that are not required by the client. In the following example, the select query parameter is used for selecting fields that would be transferred over the wire:

/employees/1234?select=firstName,lastName,email 

The Jersey framework supports the partial response feature via org.glassfish.jersey.message.filtering.SelectableEntityFilteringFeature. To enable this feature, you just need to register SelectableEntityFilteringFeature in the application. The client can use the select query parameter to select the fields that would...