FCM pushnotification中的无效注册

Question

我试图使用FCM进行推送通知，但出现了一个错误

{“多播id”：543826995043253，“成功”：0，“失败”：1，“规范id”：0，“结果”：[{“错误”：“无效注册”}]

我的代码是：

var applicationID = "AAAAU1NcEvw:APA91bF6V....blq3lFdU";
            var senderId = "357...668";
            string deviceId = "cmWVx1UBniA:APA91b.....ukG77K";
            WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
            tRequest.Method = "post";
            tRequest.ContentType = "application/json";
            var data = new
            {
                to = deviceId,
                notification = new
                {
                    body = "This is the message",
                    title = "This is the title",
                    icon = "myicon"
                }
            };
            var json = jss.Serialize(data);
            Byte[] byteArray = Encoding.UTF8.GetBytes(json);
            tRequest.Headers.Add(string.Format("Authorization: key={0}", applicationID));
            tRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
            tRequest.ContentLength = byteArray.Length;

            using (Stream dataStream = tRequest.GetRequestStream())
            {
                dataStream.Write(byteArray, 0, byteArray.Length);
                using (WebResponse tResponse = tRequest.GetResponse())
                {
                    using (Stream dataStreamResponse = tResponse.GetResponseStream())
                    using (StreamReader tReader = new StreamReader(dataStreamResponse))
                    {
                        String sResponseFromServer = tReader.ReadToEnd();
                        // Response.Write(sResponseFromServer);
                    }
                }
            }

Answer 1

由于错误状态，这意味着deviceId未注册，您可能拼写错误或已刷新。

此外，如果你在发送到主题时遇到这种情况，请确保你在前面加了前缀“/topics/”，这样firebase的好人就知道你发送到的是一个主题，而不是某个特定的人。