使用“new"获取 403 响应.Firebase 云消息传递 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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