UserController.java

import com.springbootdev.examples.domain.entity.User;
import com.springbootdev.examples.domain.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import static org.springframework.http.MediaType.*;

@RestController
@RequestMapping("/api")
public class UserController 
{
    @Autowired
    private UserRepository userRepository;

    @PostMapping(
            value = "/users",
            consumes = {APPLICATION_JSON_VALUE, APPLICATION_XML_VALUE},
            produces = {APPLICATION_JSON_VALUE, APPLICATION_XML_VALUE}
    )
    public User create(@RequestBody User user)
    {
        return userRepository.save(user);
    }
}