服务器

Question

我正在开发一个需要与服务器连接的Android应用程序。为了测试我的HTTP帖子是否有效，我使用的是posttestserver.com。唉，虽然收到我发送的邮件，但我收不到我试图发送的邮政参数。我在我的Manifest中启用了互联网许可（我在其他问题中看到了很多东西）但是，我仍然无法获得数据。我的代码是：

public String uploadData(String dataLine) throws MalformedURLException {
    URL url = new URL(urlName);
    HttpURLConnection urlConnection;
    String text = "";
    BufferedReader reader = null;
    try {
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setChunkedStreamingMode(0);
        urlConnection.setRequestMethod("POST");
        urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        Uri.Builder builder = new Uri.Builder()
                .appendQueryParameter("key", key)
                .appendQueryParameter("data", dataLine);
        String query = builder.build().getEncodedQuery();

        OutputStream os = urlConnection.getOutputStream();
        BufferedWriter writer = new BufferedWriter(
                new OutputStreamWriter(os, "UTF-8"));
        writer.write(query);
        writer.flush();
        writer.close();
        os.close();
        urlConnection.connect();

        reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
        StringBuilder sb = new StringBuilder();
        String line = null;

        // Read Server Response
        while((line = reader.readLine()) != null)
        {
            // Append server response in string
            sb.append(line + "\n");
        }
        reader.close();


        text = sb.toString();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return text;

}

我最初用

之类的东西构建Post数据

String POST = "key="+URLEncoder.encode(key, "UTF-8");

但在另一个帖子中，我看到了这个方法。 （How to add parameters to HttpURLConnection using POST）

http://posttestserver.com/data/2015/07/27/14.39.441876894412这是一个没有带参数的POST请求。