發送一個http發佈請求不起作用

我正在製作一個android應用並在模擬器上運行它。發送http發佈請求時，服務器上的所有發佈參數都爲空。這是Android應用代碼：發送一個http發佈請求不起作用

public void run() { 
    HttpClient httpclient = new DefaultHttpClient(); 
    HttpPost httppost = new HttpPost(page); 

    try { 
     // Add your data 
     List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2); 
     nameValuePairs.add(new BasicNameValuePair("id", "12345")); 
     nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!")); 
     httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

     // Execute HTTP Post Request 
     HttpResponse response = httpclient.execute(httppost); 
     InputStreamReader inreader = new InputStreamReader(response.getEntity().getContent()); 
     BufferedReader reader = new BufferedReader(inreader); 
     String line = ""; 
     while((line = reader.readLine()) != null){ 
      System.out.println(line); 
     } 

    } catch (ClientProtocolException e) { 
    } catch (IOException e) { 
    } 
}

而且這是在服務器上的代碼：