Firebase 消息，未收到消息答案

【问题标题】：Firebase messaging, message not recievedFirebase 消息，未收到消息
【发布时间】：2019-04-11 10:52:50
【问题描述】：

我的云功能显示已成功发送消息undefined messages were sent successfully，但我没有收到：

const functions = require("firebase-functions");
const admin = require("firebase-admin");

var serviceAccount = require("./config.json");

admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: "https://pushmessage-bd1eb.firebaseio.com"
});

const messaging = admin.messaging();
const message = {
            data: { title: "Testing", body: "Test" },
            token:
                "fm8hZocb9X0:APA91bGANY8U1k7iXSAofh8PEtyA3SfkAvyvicjHbSzDC7s1DwzhCxBBhj5oeAhiZpNLFC1wUHOPX_C0vlGtUMv882EXxBjsM4qeBpFndka8kzir9kgmJnuPTRImx2cxUT53oXzJuAzB"
        };

        messaging.send(message).then(response => {
            console.log(
                response.successCount + " messages were sent successfully"
            );
        });

如果我在 firebase 仪表板中使用相同的令牌发送消息，则消息发送成功。

如何让我的云功能发送消息？

config.json：

{
  "type": "service_account",
  "project_id": "pushmessage-bd1eb",
  "private_key_id": "xxx",
  "private_key": "-----BEGIN PRIVATE KEY-----\nxxx-----END PRIVATE KEY-----\n",
  "client_email": "firebase-adminsdk-8dd2o@pushmessage-bd1eb.iam.gserviceaccount.com",
  "client_id": "xxx",
  "senderID": "388436954224",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://oauth2.googleapis.com/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-8dd2o%40pushmessage-bd1eb.iam.gserviceaccount.com"
}

【问题讨论】：

标签： firebase firebase-cloud-messaging

【解决方案1】：

你在使用 admin.messaging().send() 吗？

见：

请尝试以下代码。

将data 更改为notification。

而 admin.messaging().send() 返回字符串。

      const message = {
        notification: { title: "Testing", body: "Test" },
        token:
            "The registration token here"
      };

      admin.messaging().send(message).then(response => {
        console.log(
            response + " messages were sent successfully"
        );
      });

或者你可以使用 admin.messaging().sendToDevice()。

见：

请尝试以下代码。

      const token= "The registration token here";
      const payload = {
        notification: { title: "Testing", body: "Test" }
      };

      admin.messaging().sendToDevice(token, payload).then(response => {
        console.log(
            response.successCount + " messages were sent successfully"
        );
      });

【讨论】：

是的，我正在使用 admin.messaging，我收到错误，UnhandledPromiseRejectionWarning：未处理的承诺拒绝（拒绝 id：1）：错误：未找到请求的实体。