Question

我有复杂的JSON对象，我想通过HTTP POST请求发布到服务器。我见过很多关于Volley库的例子，但它们都只能用简单的键值对（HashMap）。任何人都可以建议一个处理复杂JSON对象发布的库吗？

Answer 1

我不知道任何与JSONObjcet一起使用的库的引用，但我在这里有一个使用AsyncTask的工作代码，它将JSONObjects发送到服务器：

    private class BackgroundOperation extends AsyncTask<String, Void, String> {

        @Override
        protected String doInBackground(String... params) 
            //Your network connection code should be here .
            String response = postCall("Put your WebService url here");
            return response ;
        }

        @Override
        protected void onPostExecute(String result) {
            //Print your response here .
            Log.d("Post Response",result);

        }

        @Override
        protected void onPreExecute() {}

        @Override
        protected void onProgressUpdate(Void... values) {}
    }

        public static String postCall(JSONObject josnobj) {
        String result ="";
        try {
            //Connect
            HttpURLConnection urlConnection = (HttpURLConnection) ((new URL(uri).openConnection()));
            urlConnection.setDoOutput(true);
            urlConnection.setRequestProperty("Content-Type", "application/json");
            urlConnection.setRequestProperty("Accept", "application/json");
            urlConnection.setRequestMethod("POST");
            urlConnection.connect();
            //Write
            OutputStream outputStream = urlConnection.getOutputStream();
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
//Call parserUsuarioJson() inside write(),Make sure it is returning proper json string .
            writer.write(josnobj.toString());
            writer.close();
            outputStream.close();

            //Read
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));
            String line = null;
            StringBuilder sb = new StringBuilder();
            while ((line = bufferedReader.readLine()) != null) {
                sb.append(line);
            }
            bufferedReader.close();
            result = sb.toString();
        } catch (UnsupportedEncodingException e){
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

现在，您可以使用以下代码从您的活动的onCreate（）函数中调用以上内容。

   JSONObject jobj = new JSONObject();
jobj.put("name","yourname");
jobj.put("email","mail");
jobj.put("pass","pass");
    new BackgroundOperation().execute(jobj.toString());

注意：不要忘记在manifest.xml中提及以下权限

<uses-permission android:name="android.permission.INTERNET" />

如何在android中通过POST将复杂的JSON对象发布到服务器？

1 个答案: