JAVA/Spring
RestClient 사용
영공쁘이
2025. 4. 3. 17:45
RestClient
- 동기식 HTTP 클라이언트 [ 자바 객체에서 요청 ]
RestClient를 사용하려면, 다음과 같은 방법을 취한다.
1. restClient를 정의하는 곳 세팅(생성 등)
- RestClient 프록시를 설정
@Bean
public ControlService controlService(ClientHttpRequestFactory requestFactory) {
RestClient client = RestClient.builder()
.requestFactory(requestFactory)
.baseUrl("설정한 URL")
.defaultStatusHandler(HttpStatusCode::isError, (request, response) -> {
HttpStatusCode statusCode = response.getStatusCode();
log.error("에러코드: {}", statusCode);
}).build();
RestClientAdapter adapter = RestClientAdapter.create(client);
HttpServiceProxyFactory factory = HttpServiceProxyFactory.builderFor(adapter).build();
return factory.createClient(ControlService.class);
}
2. restClient의 http 메서드 사용하는 곳 세팅 (service)
HTTP 메서드 사용으로 : GetExchange, PostExchange .. etc.
ex) 스프링 공식 문서 참조.
※ 프로젝트
public interface ControlService {
@PostExchange(url = "/health/ctrl", contentType = MediaType.APPLICATION_JSON_VALUE)
ResponseEntity<String> putCtrlInfo(@RequestBody ServerStatusCtrlParam param);
}
Bean으로 등록된 AppConfig에서 restClient를 사용하고자 한다.
참고
https://docs.spring.io/spring-framework/reference/integration/rest-clients.html#rest-http-interface
REST Clients :: Spring Framework
WebClient is a non-blocking, reactive client to perform HTTP requests. It was introduced in 5.0 and offers an alternative to the RestTemplate, with support for synchronous, asynchronous, and streaming scenarios. WebClient supports the following: Non-blocki
docs.spring.io