Getting ready

To run this recipe, you can use your preferred IDE and must have Java 8 and Maven installed. To run the examples, I recommend you to use the command line tool CURL, or install the application Postman which allows to create HTTP requests in an intuitively manner. If you want to use Postman, the installation file can be download from https://www.getpostman.com/. This recipe will use Spring Security OAuth2 Framework and to keep it as possible, we will not add any database support at moment; that is, we will use in-memory configuration to store client details as well as access tokens. The source code for this recipe can be downloaded from https://github.com/PacktPublishing/OAuth-2.0-Cookbook/tree/master/Chapter02/auth-code-server.