Implementing REST services using @RestController and Spring REST

Using HandlerFunction and RouterFunction in exposing repository data is the major option that is the promoted by this chapter since everything is all about Spring 5. But there are also non-reactive ways of exposing these data using the conventional @RestController and Spring REST that are still present in Spring Boot 2.0, which can be part of building reactive applications and microservices.

Getting started

Open ch09-flux and add the following Spring REST support for Spring Boot 2.0.

How to do it...

To implement REST services in Spring 5, follow these steps:

1. To enable Spring REST support, add the following starter POM dependency:

<dependency> 
   <groupId>org.springframework.boot</groupId> 
   <artifactId>spring-boot-starter-data-rest</artifactId> 
</dependency> 

2. All the annotations of SpringDataConfig needed to implement Spring Data JPA are also needed here for Spring REST configuration.
3. Inside...