Book Image

OAuth 2.0 Cookbook

By : Adolfo Eloy Nascimento
Book Image

OAuth 2.0 Cookbook

By: Adolfo Eloy Nascimento

Overview of this book

OAuth 2.0 is a standard protocol for authorization and focuses on client development simplicity while providing specific authorization flows for web applications, desktop applications, mobile phones, and so on. This book also provides useful recipes for solving real-life problems using Spring Security and creating Android applications. The book starts by presenting you how to interact with some public OAuth 2.0 protected APIs such as Facebook, LinkedIn and Google. You will also be able to implement your own OAuth 2.0 provider with Spring Security OAuth2. Next, the book will cover practical scenarios regarding some important OAuth 2.0 profiles such as Dynamic Client Registration, Token Introspection and how to revoke issued access tokens. You will then be introduced to the usage of JWT, OpenID Connect, and how to safely implement native mobile OAuth 2.0 Clients. By the end of this book, you will be able to ensure that both the server and client are protected against common vulnerabilities.
Table of Contents (16 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Configuring the Client Credentials grant type

This recipe shows you how to configure the Client Credentials grant type, which is appropriate when an application needs to access resources for its own benefit instead of accessing the Resource Owner's resources.

Getting ready

To run this recipe, you can use your preferred IDE and must have Java 8 and Maven installed. For this recipe, we will be executing some HTTP requests through the usage of CURL commands as we did before. Make sure you have CURL or Postman tools installed before continuing. This recipe will use Spring Security OAuth2 Framework and we will not add any database support. The source code for this recipe can be downloaded from

How to do it...

The following steps will guide you to configure an Authorization Server and a Resource Server using Spring Security OAuth2:

  1. Create the initial project using Spring Initializr, as we did for...