@HttpExchange(url = "/users", accept = MediaType.APPLICATION_JSON_VALUE, contentType = MediaType.APPLICATION_JSON_VALUE) public interface UserClient { @GetExchange List<UserDto> getAll(); @GetExchange("/{id}") UserDto getById(@PathVariable("id") Long id); @PostExchange ResponseEntity<Void> save(@RequestBody UserDto userDto); @PutExchange("/{id}") ResponseEntity<Void> update(@PathVariable Long id, @RequestBody UserDto userDto); @DeleteExchange("/{id}") ResponseEntity<Void> delete(@PathVariable Long id); }

@Configuration public class UserClientConfig { @Bean RestClient restClient() { return RestClient.builder() .baseUrl("https://jsonplaceholder.typicode.com/") .build(); } @Bean UserClient userClient(RestClient restClient) { HttpServiceProxyFactory httpServiceProxyFactory = HttpServiceProxyFactory.builderFor(RestClientAdapter.create(restClient)) .build(); return httpServiceProxyFactory.createClient(UserClient.class); } }