java后端如何调用第三方接口(往header和body中的参数传参)

//从配置文件中读取路径  可以写死     "http://。。。。。。。"
        String serverURL = "https://www.cloud-dahua/liveList";
        StringBuffer sbf = new StringBuffer();
        String strRead = null;
        URL url = new URL(serverURL);
        HttpURLConnection connection = (HttpURLConnection)url.openConnection();
        connection.setRequestMethod("POST");//请求post方式
        connection.setDoInput(true);
        connection.setDoOutput(true);
        //header内的的参数在这里set。||connection.setRequestProperty("健, "值");
        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Authorization", "Bearer 59e0-9fcc-c3faea0e2a6c");
        connection.connect();
        OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream(),"UTF-8");
        //body参数在这里put到JSONObject中
        JSONObject parm = new JSONObject();
        parm.put("pageNum", 1);
        parm.put("pageSize", 2);
        parm.put("storeId", 001);
        writer.write(parm.toString());
        writer.flush();
        InputStream is = connection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        while ((strRead = reader.readLine()) != null) {
            sbf.append(strRead);
            //sbf.append("\r\n");
        }
        reader.close();
        connection.disconnect();
        String results = sbf.toString();