개발 공부 - HttpsURLConnection 와 HttpURLConnection 의 GET / POST 예제

Https랑 Http랑 사용 하는 방식은 같은데 URL에 따라 사용 하면 된다.

GET이랑 POST도 어짜피 동일해서 HttpURLConnection 만 GET 예제 만들었음.

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import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.nio.charset.Charset;   import javax.net.ssl.HttpsURLConnection;   public class sampleTest {     //샘플용 코드 제작       public void HttpURLConnectionGet(String strURL, String strParams) {         try {             URL url = new URL(strURL + "?" + strParams); //get 방식은 parameter를 URL에 묶어서 보낸다.             HttpURLConnection conn = (HttpURLConnection) url.openConnection();                          conn.setRequestMethod("GET");               conn.setRequestProperty("User-Agent", "Mozilla/5.0");             conn.setRequestProperty("Accept-Language", "ko-kr");             conn.setRequestProperty("Access-Control-Allow-Origin", "*");             conn.setRequestProperty("Content-Type", "application/json");               conn.setConnectTimeout(10000); // 커넥션 timeout 10초             conn.setReadTimeout(5000); //컨텐츠 조회시 timeout 5초               Charset charset = Charset.forName("UTF-8");             BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset));                          String inputLine;             StringBuffer response = new StringBuffer();                          while((inputLine = in.readLine()) != null) {                 response.append(inputLine);             }                          in.close();                      } catch (MalformedURLException e) {             //URL             e.printStackTrace();         } catch (IOException e) {             // HttpURLConnection             e.printStackTrace();         }              }          public void HttpURLConnectionPost(String strURL, String strParams) {         try {             URL url = new URL(strURL);             HttpURLConnection conn = (HttpURLConnection) url.openConnection();                          conn.setRequestMethod("POST");             //con.setRequestProperty("Authorization", alpha);             conn.setRequestProperty("User-Agent", "Mozilla/5.0");             conn.setRequestProperty("Accept-Language", "ko-kr");             conn.setRequestProperty("Access-Control-Allow-Origin", "*");             conn.setRequestProperty("Content-Type", "application/json");                          conn.setConnectTimeout(10000); // 커넥션 timeout 10초             conn.setReadTimeout(5000); //컨텐츠 조회시 timeout 5초                          conn.setDoOutput(true); //항상 갱신된 내용 가져오도록 true로 설정             DataOutputStream wr = new DataOutputStream(conn.getOutputStream());             wr.writeBytes(strParams); //파라미터 write             wr.flush();             wr.close();                          //int responseCode = conn.getResponseCode();                          Charset charset = Charset.forName("UTF-8");             BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset));                          String inputLine;             StringBuffer response = new StringBuffer();                          while((inputLine = in.readLine()) != null) {                 response.append(inputLine);             }                          in.close();                          System.out.println(response.toString());                                   } catch (MalformedURLException e) {             //URL             e.printStackTrace();         } catch (IOException e) {             //HttpURLConnection             e.printStackTrace();         }              }       public void HttpsURLConnectionPost(String strURL, String strParams) {         //HttpsURLConnection은 HttpURLConnection을 상속 받는다.         //사용 방식은 동일하나 http url과 https url이 다른 부분이다.                  try {             URL url = new URL(strURL);             HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();                          conn.setRequestMethod("POST");             //con.setRequestProperty("Authorization", alpha);             conn.setRequestProperty("User-Agent", "Mozilla/5.0");             conn.setRequestProperty("Accept-Language", "ko-kr");             conn.setRequestProperty("Access-Control-Allow-Origin", "*");             conn.setRequestProperty("Content-Type", "application/json");                          conn.setConnectTimeout(10000); // 커넥션 timeout 10초             conn.setReadTimeout(5000); //컨텐츠 조회시 timeout 5초                          conn.setDoOutput(true); //항상 갱신된 내용 가져오도록 true로 설정             DataOutputStream wr = new DataOutputStream(conn.getOutputStream());             wr.writeBytes(strParams); //파라미터 write             wr.flush();             wr.close();                          //int responseCode = conn.getResponseCode();                          Charset charset = Charset.forName("UTF-8");             BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset));                          String inputLine;             StringBuffer response = new StringBuffer();                          while((inputLine = in.readLine()) != null) {                 response.append(inputLine);             }                          in.close();                          System.out.println(response.toString());                                   } catch (MalformedURLException e) {             //URL             e.printStackTrace();         } catch (IOException e) {             //HttpsURLConnection             e.printStackTrace();         }              }            public static void main(String[] args) {                  /*             : 예제 만들때마다 새로 형태 만들기 귀찮아서 만들어서 사용하려고 제작하였음.                               출처                  : https://goddaehee.tistory.com/268                 : https://bobr2.tistory.com/entry/HttpConnection-Get-Post-%EC%82%AC%EC%9A%A9%EB%B2%95         */     } } Colored by Color Scripter

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