사용 방법 | Notion

build.gradle

// feign client
implementation group: 'org.springframework.cloud', name: 'spring-cloud-starter-openfeign', version: '3.1.1'

최상단 Application class

@EnableFeignClients 어노테이션 추가

@EnableFeignClients 
public class SampleApplication {
	public static void main(String[] args) {
		SpringApplication.run(SampleApplication.class, args);
	}
}

외부 url 관리를 yml로 설정 (optional)

# Django Converter IP
feign:
  secret:
    converterIP : <http://www.domain.com:9000>
    elasticsearchIP: <http://www.domain2.com:9200>

Client interface

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.Map;

@FeignClient(name = "elasticsearchClient", url = "${feign.secret.elasticsearchIP}")
public interface ElasticsearchClient {

    /**
     * 통합검색 > 논문 검색
     */
    @RequestMapping(method = RequestMethod.POST, value = "/paper/_search")
    Map<String, Object> searchPapers(@RequestBody Map<String, Object> body);
}

client 사용하는 class 예시

Map<String, Object> response = elasticsearchFeignClient.searchPapers(requestBody);