Java フレームワークおよびフロントエンド フレームワークと対話するためのベスト プラクティス

@RestController
@RequestMapping("/api/users")
public class UserController {

    @GetMapping
    public List<User> getAllUsers() { ... }

    @PostMapping
    public User createUser(@RequestBody User user) { ... }

    @PutMapping("/{id}")
    public User updateUser(@PathVariable("id") Long id, @RequestBody User user) { ... }

    @DeleteMapping("/{id}")
    public void deleteUser(@PathVariable("id") Long id) { ... }
}

public class ApiGateway {

    private final RestTemplate restTemplate;
    private final JwtTokenProvider tokenProvider;

    public ApiGateway(RestTemplate restTemplate, JwtTokenProvider tokenProvider) {
        this.restTemplate = restTemplate;
        this.tokenProvider = tokenProvider;
    }

    public List<User> getAllUsers() {
        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Bearer " + tokenProvider.generateToken());
        HttpEntity<String> entity = new HttpEntity<>(headers);
        return restTemplate.exchange("/api/users", HttpMethod.GET, entity, new ParameterizedTypeReference<List<User>>() {}).getBody();
    }
}