java - 发布到 GoogleCloudMessaging 返回 400 InvalidTokenFormat

Question

我正在尝试发帖到 Googles Cloud Messaging Api (GCM) ，但我的请求失败，响应为 HTTP/1.1 400 InvalidTokenFormat。

但是，如果我更改程序，使其连接到本地主机，并且我只需将其发出的请求通过管道传输到将请求传输到 GCM 的其他设备，则请求会成功。下面是失败的代码:

import java.net.URL;
import java.net.HttpURLConnection;
import java.io.OutputStream;

public class GcmPostMe {
    public static void main (String[] args) {

        String data = "{\"to\":\" *** censored recipient token *** \"}";
        String type = "application/json";
        try {
            URL u = new URL("https://android.googleapis.com/gcm/send/");
            HttpURLConnection conn = (HttpURLConnection) u.openConnection();
            conn.setDoOutput(true);
            conn.setRequestMethod("POST");
            conn.setRequestProperty( "Authorization", "key=" + " *** censored api key *** " );
            conn.setRequestProperty( "Content-Type", type );
            conn.setRequestProperty( "Content-Length", String.valueOf(data.length()));
            OutputStream os = conn.getOutputStream();
            os.write(data.getBytes());
            System.out.println(conn.getResponseCode() + " " + conn.getResponseMessage() );
            conn.disconnect();
        } catch (Exception e) {
            System.err.println("Something went wrong");
        }
    }
}

当我将上面代码中的 URL 更改为“http://localhost:10000/gcm/send ”并执行操作时，它就起作用了

nc -l 10000 | sed -e "s/localhost:10000/android.googleapis.com/" | openssl s_client -connect android.googleapis.com:443

在运行程序之前。

Answer 1

好吧，我发现了我的错误:路径错误，路径中的尾随 / 不知何故使其无法工作。

执行 HTTP POST 到 https://android.googleapis.com/gcm/send/给你 HTTP/1.1 400 InvalidTokenFormat

对 http://android.googleapis.com/gcm/send 执行相同的 POST 操作(不带尾随/)成功，HTTP/1.1 200 OK

以下作品:

import java.net.URL;
import java.net.HttpURLConnection;
import java.io.OutputStream;

public class GcmPostMe {
    public static void main (String[] args) {

        String data = "{\"to\":\" *** censored recipient token *** \"}";
        String type = "application/json";
        try {
            URL u = new URL("https://android.googleapis.com/gcm/send");
            HttpURLConnection conn = (HttpURLConnection) u.openConnection();
            conn.setDoOutput(true);
            conn.setRequestMethod("POST");
            conn.setRequestProperty( "Authorization", "key=" + " *** censored api key *** " );
            conn.setRequestProperty( "Content-Type", type );
            conn.setRequestProperty( "Content-Length", String.valueOf(data.length()));
            OutputStream os = conn.getOutputStream();
            os.write(data.getBytes());
            System.out.println(conn.getResponseCode() + " " + conn.getResponseMessage() );
            conn.disconnect();
        } catch (Exception e) {
            System.err.println("Something went wrong");
        }
    }
}