Spring中对象列表的分页

import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.repository.PagingAndSortingRepository;

public interface UserRepository extends PagingAndSortingRepository<User, Long> {
}

@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;

    public Page<User> getUsers(int pageNo, int pageSize, String sortBy) {
        Pageable pageable = PageRequest.of(pageNo, pageSize, Sort.by(sortBy));
        return userRepository.findAll(pageable);
    }
}

@RestController
public class UserController {
    @Autowired
    private UserService userService;

    @GetMapping("/users")
    public Page<User> getUsers(@RequestParam(defaultValue = "0") int pageNo,
                               @RequestParam(defaultValue = "10") int pageSize,
                               @RequestParam(defaultValue = "id") String sortBy) {
        return userService.getUsers(pageNo, pageSize, sortBy);
    }
}