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我正在尝试将来自 EditText 的信息发布到 url，然后在应用程序上显示来自 Web 服务器的信息。我尝试了几种不同的方法来做到这一点，但每次尝试都会收到不同的错误消息。

我认为这与我正在编写网址有关，但我不知道该放在哪里，有什么想法吗？

@Override
public void onCreate(Bundle savedInstanceState) 
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  Button button1 = (Button) findViewById(R.id.send_button);
  final EditText post = (EditText) findViewById(R.id.edit);


  button1.setOnClickListener(new OnClickListener() 
  {

      public void onClick(View v)
      { 

        System.out.println(executeHttpGetRequest("http://free.worldweatheronline.com/feed/weather.ashx?q="+ post.getText().toString() + "&format=json&num_of_days=2&key=9e87fcbce7114648121009"));

     }
  });

}  

private static String executeHttpGetRequest(String desiredUrl) throws Exception
{
    URL url = null;
    BufferedReader reader = null;
    StringBuilder stringBuilder;

    try
    {
        url = new URL(desiredUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod("GET");

        connection.setReadTimeout(15*1000);
        connection.connect();

        reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        stringBuilder = new StringBuilder();

        String line = null;
        while ((line = reader.readLine()) != null)
        {
            stringBuilder.append(line + "\n");
        }

        return stringBuilder.toString();
    }
        catch (Exception e)
        {
            e.printStackTrace();
            throw e;
        }
        finally
        {
            if (reader != null)
            {
                try
                {
                    reader.close();
                }
                catch (IOException ioe)
                {
                    ioe.printStackTrace();
                }
            }
        }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) 
{
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
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