This is a sample project that runs a Spring Boot application with a bit of the essentials on a REST API -- a Controller that contains endpoints, a Model (and DAO) for the data, and a Service that provides the data (for now. Repositories usually do this.
Have a working Java and Maven environment and git clone this project
to your computer.
Use mvn clean install to start things up.
Use mvn spring-boot:run to start the server. You can perform calls to http://localhost:8080/users
and should see a list of users.
Use mvn test to run unit tests.