Question

我正在尝试发布到Googles Cloud Messaging Api (GCM)，但我的请求因响应HTTP/1.1 400 InvalidTokenFormat而失败。

但是，如果我改变我的程序以便它连接到localhost，而我只是将请求传递给其他将请求发送到GCM的其他东西，请求成功。以下是失败的代码：

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网址更改为“http://localhost:10000/gcm/send”并执行

时，它可以正常工作

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

在我运行程序之前。

Answer 1

好的，我发现了我的错误：路径错了，路径中的尾随/不知何故使它无效。

对https://android.googleapis.com/gcm/send/执行HTTP POST会为您提供HTTP / 1.1 400 InvalidTokenFormat

对http://android.googleapis.com/gcm/send执行相同的POST（没有尾随/），使用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");
        }
    }
}

发布到GoogleCloudMessaging会返回400 InvalidTokenFormat

1 个答案: