HttpURLConnection

try {
 
                URL obj = new URL(url+"?"+paramString.toString());
                HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
 
                conn.setReadTimeout(5000);
                conn.setConnectTimeout(5000);
                conn.setDefaultUseCaches(false);
                conn.setRequestMethod("POST");
                conn.setDoInput(true);
                conn.setDoOutput(true);
 
                PrintWriter pw = new PrintWriter(new OutputStreamWriter(conn.getOutputStream()));
                pw.write(paramString);
                pw.flush();
                pw.close();
                int retCode = conn.getResponseCode();
 
                if (retCode == HttpURLConnection.HTTP_OK) {
                    InputStream is = conn.getInputStream();
                    BufferedReader br = new BufferedReader(new InputStreamReader(is)."UTF-8");
                    String line;
                    StringBuffer response = new StringBuffer();
                    while((line = br.readLine()) != null){
                        response.append(line);
                    }
                    br.close();
                    Log.d(TAG,"responvalue: "+response.toString());
                    return response.toString();
                }else{
                    Log.d(TAG,"error code is " + retCode);
                }
 
            } catch (Exception e) {
                e.printStackTrace();
            }

22번 라인에 "UTF-8"을 추가하면 한글깨짐현상을 막을수 있다.