As of writing this book, Spring Boot has announced that it is dropping support for the Spring Security OAuth module. Instead, it will from now on with the Spring Security 5.x OAuth2 login features.

A new module named Spring Security OAuth Boot 2 Autoconfig (its dependency in pom.xml is as shown in the following code snippet), ported from Spring Boot 1.5.x, can be used to integrate Spring Security with Spring Boot:

<dependency>
 <groupId>org.springframework.security.oauth.boot</groupId>
 <artifactId>spring-security-oauth2-autoconfigure</artifactId>
</dependency>

The project source code can be found at https://github.com/spring-projects/spring-security-oauth2-boot). The full documentation for this module can be found at https://docs.spring.io/spring-security-oauth2-boot/docs/current-SNAPSHOT/reference/htmlsingle/.