Spring + hibernate 与 Spring Data JPA：它们有不同吗

Spring + Hibernate与Spring Data JPA：它们有不同吗？

java
@Entity
@Table(name = "users")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String username;
    private String password;
    // 省略getter和setter方法
}

java
@Repository
public interface UserRepository extends JpaRepository {
    User findByUsername(String username);
}

java
@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;
    public User getUserByUsername(String username) {
        return userRepository.findByUsername(username);
    }
    public void saveUser(User user) {
        userRepository.save(user);
    }
}

java
@RestController
public class UserController {
    @Autowired
    private UserService userService;
    @GetMapping("/users/{username}")
    public User getUserByUsername(@PathVariable String username) {
        return userService.getUserByUsername(username);
    }
    @PostMapping("/users")
    public void saveUser(@RequestBody User user) {
        userService.saveUser(user);
    }
}

java
@Repository
public interface UserRepository extends JpaRepository {
    User findByUsername(String username);
}