我使用Firebase云消息传递API并向webapp发送消息。一切似乎工作正常,发送消息返回成功,但是应该接收消息的onMessage()永远不会被调用。
chrome://gcm-internals
中的Chrome内部的GCM连接已连接。
我也试过Firefox,同样的事情。
来自firebase的回复看起来不错:
{'multicast_ids': [5162553035531497690], 'success': 1, 'failure': 0, 'canonical_ids': 0, 'results': [{'message_id': 'https://updates.push.services.mozilla.com/m/...'}], 'topic_message_id': None}
然而,webapp中的onMessage从未被调用过,我也不知道为什么,因为我没有得到错误,一切似乎都很好。
这是我的JS代码:
<link rel="manifest" href="/cryptoalert/manifest.json">
<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase.js"></script>
<script>
// Initialize Firebase
var config = {
apiKey: "...",
projectId: "...",
messagingSenderId: "..."
};
firebase.initializeApp(config);
const messaging = firebase.messaging();
messaging.requestPermission()
.then(function() {
console.log('Notification permission granted.');
// TODO(developer): Retrieve an Instance ID token for use with FCM.
// ...
})
.catch(function(err) {
console.log('Unable to get permission to notify.', err);
});
// Get Instance ID token. Initially this makes a network call, once retrieved
// subsequent calls to getToken will return from cache.
messaging.getToken()
.then(function(currentToken) {
if (currentToken) {
console.log(currentToken);
//sendTokenToServer(currentToken);
//updateUIForPushEnabled(currentToken);
} else {
// Show permission request.
console.log('No Instance ID token available. Request permission to generate one.');
// Show permission UI.
updateUIForPushPermissionRequired();
setTokenSentToServer(false);
}
})
.catch(function(err) {
console.log('An error occurred while retrieving token. ', err);
showToken('Error retrieving Instance ID token. ', err);
setTokenSentToServer(false);
});
messaging.onMessage(function(payload) {
console.log("Message received. ", payload);
// ...
});
</script>
这是服务器代码:
from pyfcm import FCMNotification
push_service = FCMNotification(api_key="...")
# Send to multiple devices by passing a list of ids.
#Get registration ID from
registration_ids = ['from console.log(currentToken)']
message_title = "Uber update"
message_body = "Hope you're having fun this weekend, don't forget to check today's news"
result = push_service.notify_multiple_devices(registration_ids=registration_ids, message_title=message_title, message_body=message_body)
print(result)
答案 0 :(得分:1)
我遇到了同样的问题。在我从具有自发SSL的本地主机发布到具有可信SSL的真实站点之后,它得到了解决。请检查以下步骤:
firebase-messaging-sw.js,manifest.json在root中可用
有一个真正的SSL(不是自信的)
firebase-messaging-sw.js代码如:
importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-app.js');
importScripts(&#39; https://www.gstatic.com/firebasejs/4.8.1/firebase-messaging.js&#39);
firebase.initializeApp({ messagingSenderId:&#34; 830 *********&#34; });
//检索Firebase Messaging的实例,以便它可以处理后台 //消息 const messaging = firebase.messaging();
messaging.setBackgroundMessageHandler(function(payload){ console.log(&#39; [firebase-messaging-sw.js]收到背景消息&#39;,payload); //在此处自定义通知 var notificationTitle =&#39;背景消息标题&#39 ;; var notificationOptions = { body:&#39;背景信息正文。&#39;, icon:&#39; /firebase-logo.png' };
return self.registration.showNotification(notificationTitle,
notificationOptions);
});