httpclient를 이용한 status code 얻어오기

http의 client 프로그램 첫 번째

[참고] https://www.baeldung.com/httpclient-status-code

* 코딩 환경 : eclipse

* 실행환경 : Desktop Linux

* 빌드환경 :  java

* 필요 jar 라이브러리 : apache(https://hc.apache.org/downloads.cgi)에서 httpcomponents-client-4.5.7-bin.zip 을 다운로드 받아 eclipse project 폴더의 src, bin과 같은 level의 jar에 풀어서 사용

* 테스트에 사용한 자바 코드 : 

package helloworld; import org.apache.http.client.HttpClient.*; import org.apache.http.client.methods.*; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; public class helloworld { private static String url = "http://www.apache.org/"; public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("Hello world!"); int statusCode =0; try { HttpClient client = HttpClientBuilder.create().build(); HttpResponse response = client.execute(new HttpGet(url)); statusCode = response.getStatusLine().getStatusCode(); } catch(Exception e) {} System.out.println("Status Code is "+ statusCode); } }

실행결과: 

Hello world! Status Code is 200