尝试通过 C2DM 服务器发送推送通知时,我收到以下 SSLHandshakeException。
javax.net.ssl.SSLHandshakeException: Could not verify SSL certificate for: https://android.apis.google.com/c2dm/send
发送消息的代码如下,并且在 App Engine 上运行。当我使用 cURL 时一切正常,所以我知道服务器验证码和设备注册 ID 是正确的。
public static void sendHttpPostToC2dmService(String msg, PrintWriter out) {
String authCode = "XXXX";
String regID = "YYYY";
try {
URL url = new URL("https://android.apis.google.com/c2dm/send");
String data = URLEncoder.encode("registration_id", "UTF-8") + "="
+ URLEncoder.encode(regID, "UTF-8");
data += "&"
+ URLEncoder.encode("Authorization: GoogleLogin auth",
"UTF-8") + "="
+ URLEncoder.encode(authCode, "UTF-8");
data += "&" + URLEncoder.encode("collapse_key", "UTF-8") + "="
+ URLEncoder.encode("something", "UTF-8");
data += "&" + URLEncoder.encode("data.message", "UTF-8") + "="
+ URLEncoder.encode(msg, "UTF-8");
out.println("data=" + data);
HttpURLConnection connection = (HttpURLConnection) url
.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("POST");
OutputStreamWriter writer = new OutputStreamWriter(
connection.getOutputStream());
writer.write(data);
writer.close();
out.println("responseCode=" + connection.getResponseCode());
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
String responseLine = new BufferedReader(new InputStreamReader(
connection.getInputStream())).readLine();
out.println("responseLine=" + responseLine);
} else {
// Server returned HTTP error code.
}
} catch (MalformedURLException e) {
out.println("MalformedURL");
out.println(e.getMessage());
} catch (IOException e) {
out.println("IOException");
out.println(e.getMessage());
e.printStackTrace(out);
}
}
似乎其他人也有这个问题,但我一直无法找到一个明确的解决方案(至少不是我能够理解的)。感谢任何帮助。