我正在搜索如何使用C2DM发送通知。我找到了一些资料，成功生成了“注册密钥”和“身份验证密钥”。
但是在“ServerSimulator”类（服务器端代码）中，我遇到了401错误（未经授权的）。现在我手动传递了用户名和密码，并将其与我的Android设备同步。但我仍然遇到了之前相同的错误。
当我点击发送消息按钮时，就会出现这个问题。
我陷入了这个问题中。有人能够解决这个问题吗？
但是在“ServerSimulator”类（服务器端代码）中，我遇到了401错误（未经授权的）。现在我手动传递了用户名和密码，并将其与我的Android设备同步。但我仍然遇到了之前相同的错误。
当我点击发送消息按钮时，就会出现这个问题。
我陷入了这个问题中。有人能够解决这个问题吗？
public class ServerSimulator extends Activity
{
private SharedPreferences prefManager;
private final static String AUTH = "authentication";
private static final String UPDATE_CLIENT_AUTH = "Update-Client-Auth";
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";
private static final String UTF8 = "UTF-8";
// Registration is currently hardcoded
private final static String YOUR_REGISTRATION_STRING = "APA91bFkxmtIj5XiBU-Cze64s0gXNb7OmiWWZg-qLKibpLsVXaWq1X7hoRV9Ld9COYXirZAgkYegZBdBfUGt3lgtuhNJopvHB0KJ5ZyJ6Kt_HYRrZhgdJ1Y";
private SharedPreferences prefs;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
prefManager = PreferenceManager.getDefaultSharedPreferences(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.mymenu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menuitem_user:
Intent intent = new Intent(this, UserPreferences.class);
startActivity(intent);
break;
default:
break;
}
return false;
}
public void getAuthentification(View view) {
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(this);
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(
"https://www.google.com/accounts/ClientLogin");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("Email","myEmail id")));
nameValuePairs.add(new BasicNameValuePair("Passwd","my password")));
nameValuePairs.add(new BasicNameValuePair("accountType", "GOOGLE"));
nameValuePairs.add(new BasicNameValuePair("source","Google-cURL-Example"));
nameValuePairs.add(new BasicNameValuePair("service", "ac2dm"));
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = client.execute(post);
BufferedReader rd = new BufferedReader(new InputStreamReader(
response.getEntity().getContent()));
String line = "";
while ((line = rd.readLine()) != null) {
Log.e("HttpResponse", line);
if (line.startsWith("Auth=")) {
Editor edit = prefManager.edit();
edit.putString(AUTH, line.substring(5));
edit.commit();
String s = prefManager.getString(AUTH, "n/a");
Toast.makeText(this, s, Toast.LENGTH_LONG).show();
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
public void showAuthentification(View view) {
String s = prefManager.getString(AUTH, "n/a");
Toast.makeText(this, s, Toast.LENGTH_LONG).show();
}
public void sendMessage(View view) {
try {
Log.e("Tag", "Started");
String auth_key = prefManager.getString(AUTH, "n/a");
// Send a sync message to this Android device.
StringBuilder postDataBuilder = new StringBuilder();
postDataBuilder.append(PARAM_REGISTRATION_ID).append("=")
.append(YOUR_REGISTRATION_STRING);
// if (delayWhileIdle) {
// postDataBuilder.append("&").append(PARAM_DELAY_WHILE_IDLE)
// .append("=1");
// }
postDataBuilder.append("&").append(PARAM_COLLAPSE_KEY).append("=")
.append("0");
postDataBuilder.append("&").append("data.payload").append("=")
.append(URLEncoder.encode("Lars war hier", UTF8));
byte[] postData = postDataBuilder.toString().getBytes(UTF8);
// Hit the dm URL.
URL url = new URL("https://android.clients.google.com/c2dm/send");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded;charset=UTF-8");
conn.setRequestProperty("Content-Length",
Integer.toString(postData.length));
conn.setRequestProperty("Authorization", "GoogleLogin auth="
+ auth_key);
OutputStream out = conn.getOutputStream();
out.write(postData);
out.close();
int responseCode = conn.getResponseCode();
Log.e("Tag", String.valueOf(responseCode));
// Validate the response code
if (responseCode == 401 || responseCode == 403) {
// The token is too old - return false to retry later, will
// fetch the token
// from DB. This happens if the password is changed or token
// expires. Either admin
// is updating the token, or Update-Client-Auth was received by
// another server,
// and next retry will get the good one from database.
Log.e("C2DM", "Unauthorized - need token");
}
// Check for updated token header
String updatedAuthToken = conn.getHeaderField(UPDATE_CLIENT_AUTH);
if (updatedAuthToken != null && !auth_key.equals(updatedAuthToken)) {
Log.i("C2DM",
"Got updated auth token from datamessaging servers: "
+ updatedAuthToken);
Editor edit = prefManager.edit();
edit.putString(AUTH, 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("")) {
Log.i("C2DM", "Got " + responseCode
+ " response from Google AC2DM endpoint.");
throw new IOException(
"Got empty response from Google AC2DM endpoint.");
}
String[] responseParts = responseLine.split("=", 2);
if (responseParts.length != 2) {
Log.e("C2DM", "Invalid message from google: " + responseCode
+ " " + responseLine);
throw new IOException("Invalid response from Google "
+ responseCode + " " + responseLine);
}
if (responseParts[0].equals("id")) {
Log.i("Tag", "Successfully sent data message to device: "
+ responseLine);
}
if (responseParts[0].equals("Error")) {
String err = responseParts[1];
Log.w("C2DM",
"Got error response from Google datamessaging endpoint: "
+ err);
// No retry.
throw new IOException(err);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}