當我通知多個電話 - C2DM，我只收到一個消息。一個正常的和一個空的

Question

我只在一部手機上收到消息。一個正常的消息與我的信息和一個空的消息，這使我的應用程序崩潰。 我更改註冊ID密鑰和自動化密鑰。 只有一部手機完美無缺。

public class URLCaller { 

private static final String PASSWORD = "xxxxxxx"; //i remove it 

private static final String EMAIL = "xxxxxxxxxx@gmail.com"; //i remove it 

public static final String PARAM_REGISTRATION_ID = "registration_id"; 

public static final String PARAM_DELAY_WHILE_IDLE = "delay_while_idle"; 

public static final String PARAM_COLLAPSE_KEY = "collapse_key"; 

static String auth_key = null; 

static byte[] postData = null; 

public static void callGoogle(CalEvent calEvent) throws IOException, SystemException { 

    URL url = new URL("https://android.clients.google.com/c2dm/send"); 

    StringBuilder builder = new StringBuilder(); 

    HttpsURLConnection conn = null; 
    // For each smartPhone 
    for(SmartPhone smartPhone : SmartPhoneLocalServiceUtil.getSmartPhones(0, SmartPhoneLocalServiceUtil.getSmartPhonesCount())) { 
     auth_key = getAuthorization(); 
     //Setup data 
     System.out.println("" + smartPhone.getRegistrationId()); 
     builder.append("registration_id=" + smartPhone.getRegistrationId()); 

     builder.append("&").append(PARAM_COLLAPSE_KEY).append("=").append("0"); 
     builder.append("&").append("data.payload").append("=").append(URLEncoder.encode("calEventId=" + calEvent.getCalEventId(), "UTF-8")); 
     postData = builder.toString().getBytes("UTF-8"); 

     //Calling server 
     conn = (HttpsURLConnection) url.openConnection(); 
     conn.setHostnameVerifier(new CustomizedHostnameVerifier()); 
     conn.setDoOutput(true); 
     conn.setUseCaches(false); 
     conn.setRequestMethod("POST"); 
     conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8"); 
     conn.setRequestProperty("Content_Lenght", Integer.toString(postData.length)); 
     conn.setRequestProperty("Authorization", "GoogleLogin auth=" + auth_key); 

     // Issue the HTTP POST request 
     OutputStream out = conn.getOutputStream(); 
     out.write(postData); 
     out.close(); 

     System.out.println("Google server said: " + conn.getResponseCode() + ", " + conn.getResponseMessage()); 

     // Check for updated token header 
     String updatedAuthToken = conn.getHeaderField("Update-Client-Auth"); 
     if(updatedAuthToken != null && !auth_key.equals(updatedAuthToken)) { 

      System.out.println("C2DM," + "Got updated auth token from datamessaging servers: " + updatedAuthToken); 

      //auth_key = updatedAuthToken; 

      String responseLine = new BufferedReader(new InputStreamReader(conn.getInputStream())).readLine(); 

      // NOTE: You *MUST* use exponential backoff if you receive a 503 response code. 
      // Since App Engine's task queue mechanism automatically does this for tasks that 
      // return non-success error codes, this is not explicitly implemented here. 
      // If we weren't using App Engine, we'd need to manually implement this. 
      if(responseLine == null || responseLine.equals("")) { 
       System.out.println("Got " + conn.getResponseCode() + " response from Google AC2DM endpoint."); 
       throw new IOException("Got empty response from Google AC2DM endpoint."); 
      } 

      String[] responseParts = responseLine.split("=", 2); 
      if(responseParts.length != 2) { 
       System.out.println("Invalid message from google: " + conn.getResponseCode() + " " + responseLine); 
       throw new IOException("Invalid response from Google " + conn.getResponseCode() + " " + responseLine); 
      } 

      if(responseParts[0].equals("id")) { 
       System.out.println("Successfully sent data message to device: " + responseLine); 
      } 

      if(responseParts[0].equals("Error")) { 
       String err = responseParts[1]; 
       System.out.println("Got error response from Google datamessaging endpoint: " + err); 
       // No retry. 
       //throw new IOException(err); 
      } 
     } 

    } 

} 

public static String getAuthorization() { 
    String authToken = null; 

    HttpURLConnection urlConnection; 
    URL url; 
    try { 
     url = new URL("https://www.google.com/accounts/ClientLogin"); 

     urlConnection = (HttpURLConnection) url.openConnection(); 
     urlConnection.setRequestMethod("POST"); 
     urlConnection.setDoInput(true); 
     urlConnection.setDoOutput(true); 
     urlConnection.setUseCaches(false); 
     urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 

     StringBuilder builder = new StringBuilder(); 
     builder.append("Email=").append(EMAIL); 
     builder.append("&Passwd=").append(PASSWORD); 
     builder.append("&accountType=GOOGLE"); 
     builder.append("&source=Google-C2DM-Example"); 
     builder.append("&service=ac2dm"); 

     OutputStream outputStream = urlConnection.getOutputStream(); 
     outputStream.write(builder.toString().getBytes("UTF-8")); 
     outputStream.close(); 
     int responseCode = urlConnection.getResponseCode(); 
     System.out.println(responseCode + "\tSuccess"); 
     StringBuffer resp = new StringBuffer(); 
     if(responseCode == HttpURLConnection.HTTP_OK) { 
      InputStream inputStream = urlConnection.getInputStream(); 
      BufferedReader rd = new BufferedReader(new InputStreamReader(inputStream)); 
      String line; 
      while ((line = rd.readLine()) != null) { 
       if(line.startsWith("Auth=")) { 
        resp.append(line.substring(5)); 
       } 
      } 
      rd.close(); 
     } 

     authToken = resp.toString(); 
     System.out.println("AuthTOken" + authToken); 
    } catch(MalformedURLException e) { 
     e.printStackTrace(); 
    } catch(ProtocolException e) { 
     e.printStackTrace(); 
    } catch(IOException e) { 
     e.printStackTrace(); 
    } 
    return authToken; 

} 

private static class CustomizedHostnameVerifier implements HostnameVerifier { 

    @Override 
    public boolean verify(String hostname, SSLSession session) { 
     return true; 
    } 
} 

我沒有收到任何錯誤。 謝謝你，美好的一天。

Answer 1

StringBuilder builder = new StringBuilder（）;在我之前;）