401使用httpsurlconnection类的urbanairship出现错误

当我尝试点击推送URL时，我遇到了一个401错误。我使用HTTP基本身份验证，用户名为“应用程序密钥”，密码为“应用程序主密钥”。我正在使用JAVA HttpsUrlConnection类。我不知道我的代码有什么问题

 `            URL url = new URL("https://go.urbanairship.com/api/push");
          HttpsURLConnection connection = (HttpsURLConnection)url.openConnection();
          connection.setRequestMethod("POST");
          connection.setDoOutput(true);
          connection.setDoInput(true);
          connection.setUseCaches(false);
          connection.setRequestProperty("Content-Type","application/json");
          connection.setRequestProperty("Content-Length", Integer.toString(data.length()));

          String authString = "xxxxxxxxxxxxxxxxxx:yyyyyyyyyyyyyyyyy";
          authString = Base64Coder.encodeString(authString);
          connection.setRequestProperty("Authorization","Basic "+ authString);
          OutputStreamWriter wr = new OutputStreamWriter(connection.getOutputStream());
          wr.write(data);
          wr.flush();

          int responseCode = connection.getResponseCode();

          //Get the response
          String responseLine = new BufferedReader(new InputStreamReader(connection.getInputStream())).readLine();`

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您的authString应该由

或库组成，以编码authString
，即使在上述代码中添加“ostermiller”库也会出现相同的错误…有什么建议吗？？