使用“new"获取 403 响应.Firebase 云消息传递 API [英] Get 403 response with the "new" Firebase Cloud Messaging API

问题描述

我们已成功使用 旧版 HTTP 服务器协议我们的 FCM 服务器.我今天想更新到 FCM HTTP v1 API.

We are successfully using the Legacy HTTP Server Protocol on our server for FCM. I wanted to update to FCM HTTP v1 API today.

我做到了一步一步，当服务器调用请求，我们得到这个响应:

I did it step by step and when the server calls the request, we get this response:

Server returned HTTP response code: 403 for URL: https://fcm.googleapis.com/v1/projects/[projectid]/messages:send

这是服务器代码:

URL url = new URL("https://fcm.googleapis.com/v1/projects/[projectid]/messages:send");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestProperty("Authorization", "Bearer " + getAccessToken());
conn.setRequestProperty("Content-Type", "application/json");
OutputStream outputStream = conn.getOutputStream();
outputStream.write(req.getBytes("UTF-8"));

// Exception happen here
InputStream inputStream = conn.getInputStream();

getAccessToken():

The getAccessToken():

private static String getAccessToken() throws IOException {
        GoogleCredential googleCredential = GoogleCredential
            .fromStream(new FileInputStream(ClientApiServlet.context.getRealPath("/WEB-INF/[projectid].json")))         .createScoped(Arrays.asList("https://www.googleapis.com/auth/firebase.messaging"));
        googleCredential.refreshToken();
        return googleCredential.getAccessToken();
}

我已经从 firebase 云的 adminsdk 页面下载了 json 文件.

I have downloaded the json file from the adminsdk page of the firebase cloud.

都具有相同的投影...

All with the same projectid...

我在服务器上更新了这两个库:

I updated these 2 libs on the server:

google-http-client-jackson2-1.23.0.jar
google-oauth-client-1.23.0.jar

getAccessToken() 方法返回一个访问令牌:ya29.c.Elr0BAa..."

The getAccessToken() methode returned an accesstoken: "ya29.c.Elr0BAa..."

我想，我错过了一小步，也许你能帮忙?提前致谢！

I think, I miss a small step, maybe you could help? Thanks in advance!

它现在在 arterpa 的提示下工作！再次感谢！

It is working now with the hint of arterpa! Thanks again!

之后我得到一个 400 错误，所以请求数据中有错误:

After that I got a 400 error, so something in the request data was wrong:

问题是，我们没有将所有 data{...} 值转换为字符串.对于遗留协议，这不是问题，但对于 FCM HTTP v1 API，它必须是字符串！;)

The problem was, we didn't converted all data{...}values to strings. With the legacy protocol it was not an issue, but with FCM HTTP v1 API it has to be strings! ;)

推荐答案

我遇到了这个问题，您似乎需要在 Google API 控制台.

I had this problem, and it seems you need to enable FCM API for your project at Google API console.

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