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java - Http(s) 请求以垃圾字符响应

问题描述

我正在尝试向网站发送请求以从中获取一些数据。但是，响应是垃圾字符，例如：

Ì 3ú¢¸<N¤@H±ü>§#Fe®¡+K·fÐcıaOqâò;'Êù!°â<rº\¼YDóß1K`òúüb¨ÑTcíÆ

这只发生在包含数据的 repose 中，并且错误也可以正常工作。响应应该如下所示（来自浏览器请求）： {"d":[{"__type":"CalendarTransport:http:...","activityId":2662,"activityImportIdentifier":null,"activityType":1,"allDay":false,"attendanceMode":1,....

这是我的代码

        try
        {
            HttpsURLConnection httpsURLConnection;
            httpsURLConnection = (HttpsURLConnection) new URL("https", redacted, redacted).openConnection();

            try
            {
                httpsURLConnection.setRequestMethod("POST");
            }
            catch (Exception e)
            {
                Log.d(TAG, "doInBackground: oh no (3) it's a " + e.toString());
            }
            httpsURLConnection.setRequestProperty("Accept-Charset", "*/*");
            httpsURLConnection.setRequestProperty("Accept-Encoding", "gzip, deflate, br");
            httpsURLConnection.setRequestProperty("Connection", "keep-alive");
            httpsURLConnection.setRequestProperty("Content-Type", "application/json");
            httpsURLConnection.setRequestProperty("Cookie", new DomainCookies(redacted).toRequestHeader());
            httpsURLConnection.setDoOutput(true);
            httpsURLConnection.setDoInput(true);

            OutputStream os = httpsURLConnection.getOutputStream();

            OutputStreamWriter osw = new OutputStreamWriter(os, "UTF-8");
            osw.write(redacted);
            osw.flush();
            osw.close();
            os.close(); 

            StringBuilder mssg = new StringBuilder();
            DataInputStream inputStream;

            int status = httpsURLConnection.getResponseCode();

            if (status != HttpsURLConnection.HTTP_OK)
            {
                inputStream = new DataInputStream(httpsURLConnection.getErrorStream());
                Log.d(TAG, "doInBackground: HTTP error");
            }
            else
            {
                inputStream = new DataInputStream(httpsURLConnection.getInputStream());
                Log.d(TAG, "doInBackground: HTTP OK");
            }
            try
            {
                for(int c = inputStream.read(); inputStream.available() != 0; c = inputStream.read())
                {
                    mssg.append((char)c);
                }

                Log.d(TAG, "doInBackground: " + mssg);
            }
            catch (Exception e)
            {
                Log.d(TAG, "doInBackground: oh no (1) it's a " + e.toString());
            }
        }
        catch (MalformedURLException e)
        {
            Log.d(TAG, "onCreate: Oh no it's a " + e.toString());

        }
        catch (Exception e)
        {
            Log.d(TAG, "doInBackground: Oh no it's a " + e.toString());
        }

浏览器可以得到很好的响应，一定是我正在做的事情（或android，但我怀疑）

标签： javaandroidandroid-studio

解决方案

我将从摆脱这条线开始：

httpsURLConnection.setRequestProperty("Accept-Encoding", "gzip, deflate, br");

您的代码没有处理这些形式的数据编码，因此不要要求服务器以这种方式对数据进行编码。

除此之外......现在是 2018 年。停止使用HttpsURLConnection. 使用更现代且不易出错的东西，例如OkHttp。

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