Question

我的应用程序将数据发送到服务器并从中获取数据。应用程序在WiFi上成功执行，但在3G上失败。它的例外是网络问题，有时是服务器超时。当我尝试记录它时，它不会给出响应代码。服务器代码使用REST API准备这是java代码：

        @Override
        protected String doInBackground(String... params) {

            String lastOduuFk = "new";
            String oduuLang = "new";
            String ROOT_WEB = "http://www.example.com/";

            String updateTaateeUrl = ROOT_WEB + "v1/loadOduu?lastOduuFk=" + lastOduuFk + "&lang=" + oduuLang;
            BufferedReader bufferedReader = null;
            HttpURLConnection httpURLConnection = null;
            URL url = null;

            String api_val = "xxxxxxxxxxxxx";

            String mainInfo = null;
            try {
                url = new URL(updateTaateeUrl);
                Log.i(TAG, "Try this url");
                httpURLConnection = (HttpURLConnection) url.openConnection();

                //Property of the connection
                httpURLConnection.setDoInput(true);
                httpURLConnection.setRequestMethod("POST");
                httpURLConnection.setRequestProperty("Authorization", api_val);
                httpURLConnection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 5.1; rv:19.0)  Gecko/20100101 Firefox/45.0");
                httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
                httpURLConnection.setConnectTimeout(30000);
                httpURLConnection.setReadTimeout(30000);
                httpURLConnection.connect();

                int reponse = httpURLConnection.getResponseCode();
                Log.i(TAG, "first_Req_res: " + reponse);

                InputStream inputStream = httpURLConnection.getInputStream();
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1"));
                String result = "";
                String line;
                while ((line = bufferedReader.readLine()) != null) {
                    result += line;
                }

                mainInfo = result;
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (SocketTimeoutException connTimeout) {
                this.socketTimedOut = true;
            } catch (IOException e) {
                e.printStackTrace();
                this.netWorkProblem = true;
            } finally {
                if (httpURLConnection != null) {
                    httpURLConnection.disconnect();
                }
                try {
                    if (bufferedReader != null) {
                        bufferedReader.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return mainInfo;
        }

当手机连接到WiFi连接时，代码运行良好。但在3G上它不起作用。当我用手机浏览器打开链接时，它会在3G上成功打开。即使它没有记录Log.i(TAG, "first_Req_res: " + reponse); 我试图将其用户代理更改为httpURLConnection.setRequestProperty("User-Agent", "");，但确实改变了任何内容。我还试图增加其连接并读取超时时间。该方法只是不断推出null。

它的日志看起来像是

................
08-14 16:17:43.092 14882-16108/xyz.natol.kubbaa I/xyz.natol.kubbaa: Try this url
08-14 16:18:52.420 14882-14882/xyz.natol.kubbaa I/xyz.natol.kubbaa: first_Req_result: null
08-14 16:18:55.923 14882-14882/xyz.natol.kubbaa D/InputMethodManager: windowDismissed mLockisused = false
........................

如何才能使其在3G上运行？

Android HttpURLConnection不支持3G，但适用于WiFi

0 个答案: