public static JSONObject httpInterfaceForJson(String requestUrl, String requestMethod, JSONObject fullJson) {        String res = "";        StringBuffer buffer = new StringBuffer();        HttpURLConnection httpUrlConn = null;        try {            URL url = new URL(requestUrl);            httpUrlConn = (HttpURLConnection) url.openConnection();            httpUrlConn.setDoOutput(true);            httpUrlConn.setDoInput(true);            httpUrlConn.setUseCaches(false);//            httpUrlConn.setRequestProperty("Accept", "text/plain");            httpUrlConn.setRequestProperty("Content-Type", "application/json");            httpUrlConn.setRequestMethod(requestMethod);            httpUrlConn.getOutputStream().write(fullJson.toString().getBytes("UTF-8"));            InputStream inputStream = httpUrlConn.getInputStream();            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);            String str = null;            while((str = bufferedReader.readLine()) != null) {                buffer.append(str);            }            bufferedReader.close();            inputStreamReader.close();            inputStream.close();            inputStream = null;            httpUrlConn.disconnect();            res = buffer.toString();        } catch (ConnectException var21) {        } catch (Exception var22) {        } finally {            try {                httpUrlConn.disconnect();            } catch (Exception var20) {            }        }        return JSONObject.parseObject(res);    }