json协议

    String wholeUrl = String.format("%s?sdkappid=%d&random=%d", URL, SDKAPPID, rnd);

        java.net.URL object = new URL(wholeUrl);
        HttpURLConnection con = (HttpURLConnection) object.openConnection();
        con.setDoOutput(true);
        con.setDoInput(true);
        con.setRequestProperty("Content-Type", "application/json");
        con.setRequestProperty("Accept", "application/json");
        con.setRequestMethod("POST");
        JSONObject data = new JSONObject();
        JSONObject tel = new JSONObject();
        tel.put("nationcode", nationCode);
        String phone = phoneNumber;
        tel.put("phone", phone);
        data.put("type", "0");
        data.put("msg", content);
        String sig = stringMD5(APPKEY.concat(phone));
        data.put("sig", sig);
        data.put("tel", tel);
        OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream(), "utf-8");
        wr.write(data.toString());
        wr.flush();

        // 显示 POST 请求返回的内容
        StringBuilder sb = new StringBuilder();
        int HttpResult = con.getResponseCode();
        if (HttpResult == HttpURLConnection.HTTP_OK)
        {
            BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "utf-8"));
            String line;
            while ((line = br.readLine()) != null)
            {
                sb.append(line + "\n");
            }
            br.close();
            JSONObject reObj = new JSONObject(sb.toString());
            String res = (String)reObj.get("result");
            if(!"0".equals(res)) {
                System.out.println("" + sb.toString());
                LOGGER.error("SmsSender::sendMsg" + "-" + phoneNumber + ","+(String)reObj.get("errmsg"));
            } else {

            }


        } else
        {
            LOGGER.error("send failed and rps is: " + con.getResponseMessage());
            throw new SmsException("send failed and rps is: " + con.getResponseMessage());
        }