URL 접근

/**
* [ 1 ]  API 를 호출하여 DATA 를 가져옴 
*/
public List<Demon_Test_VO> api_Get_Data_1( String strUrl ) {

  List<Demon_Test_VO> list = new  ArrayList<Demon_Test_VO>();

  String json = send_Post(strUrl);

  JSONObject jsonObject = new JSONObject(json);
  JSONArray  jsonArray  = jsonObject.getJSONArray("docs");

  int length = jsonArray.length();

  for( int i=0; i<length; i++ ) {

    Demon_Test_VO vo = new Demon_Test_VO();
    JSONObject tempObject = jsonArray.getJSONObject(i);

    vo.setI_content(tempObject.getString("i_content"));
    vo.setI_title(tempObject.getString("i_title"));

    list.add(vo);
  }

  return list;
}

 

 

/**
* API 를 호출하여 DATA 생성 
*/
private String send_Post(String strUrl) {
  try{
      // URL 연결
      URL url = new URL(strUrl);
      HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();

      // 지연 방지
      httpURLConnection.setConnectTimeout(5000);
      httpURLConnection.setReadTimeout(5000);

      // 설정 
      httpURLConnection.setRequestMethod("POST");
      httpURLConnection.setRequestProperty("Content-Type", "application/json");

      // Server 통신에서 출력 가능한 상태
      httpURLConnection.setDoOutput(true);

      // 캐싱데이터의 캐치 유무
      httpURLConnection.setUseCaches(false);

      StringBuffer stringBuffer = new StringBuffer();

      if(httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {

      BufferedReader br = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream(), "utf-8"));
      String line;
      
      while( (line = br.readLine() ) != null ) {
      	stringBuffer.append(line).append("\n");
      }
      br.close();
      return stringBuffer.toString();
  }else {
  	return httpURLConnection.getResponseMessage();
  }

  }catch (Exception e) {
  	e.printStackTrace();
  	return null;
  }
}