[JAVA] API 호출 - HttpURLConnection

public String getJsonUseHttpURLConnection(){
        String result = "";
        try{
            URL url = new URL(uriStr);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
		conn.setConnectTimeout(5000);
		conn.setReadTimeout(5000);
            	conn.setRequestMethod("GET");

		StringBuilder sb = new StringBuilder();
            if(conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                BufferedReader br = new BufferedReader(
                	new InputStreamReader(conn.getInputStream(),"utf-8"));

                String line;
                while((line = br.readLine()) != null){
                    sb.append(line);
                }
                result = sb.toString();
                br.close();
                conn.disconnect();
            }else{
                result = conn.getResponseMessage();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

 

disconnect - 연결을 끊는다. 소켓 재사용성이 용이하다.

close        - 연결을 끊는다. 연결을 다시 해야한다. 

 

** https://stackoverflow.com/questions/26982556/httpurlconnection-disconnect-vs-close