问题描述
我试图在我的REact js项目中使用Firebase实施Web推送通知。
Index.js
import React from "react";
import ReactDOM from "react-dom";
import "antd/dist/antd.css";
import './App.css';
import { createStore,compose,applyMiddleware } from "redux";
import { composeWithDevTools } from "redux-devtools-extension/developmentOnly";
import { Provider } from "react-redux";
import thunk from "redux-thunk";
import {messaging} from "./config/FirebaseConfig"
import App from "./App";
import * as serviceWorker from "./serviceWorker";
import rootReducer from "./reducers/rootReducer";
const store = createStore(
rootReducer,composeWithDevTools(applyMiddleware(thunk))
);
if ("serviceWorker" in navigator) {
navigator.serviceWorker
.register(`./firebase-messaging-sw.js`)
.then(function(registration) {
messaging.useServiceWorker(registration);
console.log("Registration successful,scope is:",registration.scope);
})
.catch(function(err) {
console.log("Service worker registration Failed,error:",err);
});
}
ReactDOM.render(
<Provider store={store}>
<App />
</Provider>,document.getElementById("root")
);
serviceWorker.register();
以上文件是位于src文件夹中的主要源文件。 我添加了 firebase-messaging-sw.js ，如下所示：
importScripts("https://www.gstatic.com/firebasejs/5.9.4/firebase-app.js");
importScripts("https://www.gstatic.com/firebasejs/5.9.4/firebase-messaging.js");
firebase.initializeApp({
messagingSenderId: "XXXXXX",});
const messaging = firebase.messaging();
messaging.usePublicvapidKey("XXXXXXXXXXXXXXXXXXXXX")
messaging.setBackgroundMessageHandler(function(payload) {
const promiseChain = clients
.matchAll({
type: "window",includeUncontrolled: true
})
.then(windowClients => {
for (let i = 0; i < windowClients.length; i++) {
const windowClient = windowClients[i];
windowClient.postMessage(payload);
}
})
.then(() => {
return registration.showNotification("my notification title");
});
return promiseChain;
});
self.addEventListener('notificationclick',function(event) {
// do what you want
// ...
});
我在Main组件的amount方法上添加了请求权限代码，如下所示：
componentDidMount()
{
messaging.requestPermission()
.then(async function() {
const token = await messaging.getToken();
console.log("token",token)
})
.catch(function(err) {
console.log("d to get permission to notify.",err);
});
navigator.serviceWorker.addEventListener("message",(message) => console.log(message));
messaging.onMessage((payload) => console.log('Message received. ',payload));
const fetchOptions = {
method: "POST",headers: {
"Authorization": "key=l9oalOyzXcU-NqCI4LZyVrLuF3X3_4tiOHpMUYK_AxC4G...","Content-Type": "application/json"
},body: JSON.stringify({
to:"e56_nKx5Ejm1HyWHKcvZFq:APA91bH-...-nKE9YEILYu7RQBBiyCs_CUo2IC0DX-87cMgmMcYwvYQ1yg0BmqWfAgbbkfPtfzXGGOdzmvxVX2wBlwhnnK5oUxjtXalQ4T5CM7IQOhertbXc",notification : {
"title": "Message recieived from:","body": message,"click_action": "http://localhost:3000/","icon": "http://url-to-an-icon/icon.png"
},})
}
fetch("https://fcm.googleapis.com/fcm/send",fetchOptions)
.then(response =>console.log(response))
.then(data => console.log(data));
}
还为 index.js 文件
中使用的 serviceWorker.js 文件添加代码。// This optional code is used to register a service worker.
// register() is not called by default.
// This lets the app load faster on subsequent visits in production,and gives
// it offline capabilities. However,it also means that developers (and users)
// will only see deployed updates on subsequent visits to a page,after all the
// existing tabs open on the page have been closed,since prevIoUsly cached
// resources are updated in the background.
const isLocalhost = Boolean(
window.location.hostname === 'localhost' ||
// [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' ||
// 127.0.0.1/8 is considered localhost for IPv4.
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
export function register(config) {
if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
// The URL constructor is available in all browsers that support SW.
const publicUrl = new URL(process.env.PUBLIC_URL,window.location.href);
if (publicUrl.origin !== window.location.origin) {
// Our service worker won't work if PUBLIC_URL is on a different origin
// from what our page is served on. This might happen if a CDN is used to
// serve assets; see https://github.com/facebook/create-react-app/issues/2374
return;
}
window.addEventListener('load',() => {
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
if (isLocalhost) {
// This is running on localhost. Let's check if a service worker still exists or not.
checkValidServiceWorker(swUrl,config);
// Add some additional logging to localhost,pointing developers to the
// service worker/PWA documentation.
navigator.serviceWorker.ready.then(() => {
console.log(
'This web app is being served cache-first by a service ' +
'worker. To learn more,'
);
});
} else {
// Is not localhost. Just register service worker
registerValidSW(swUrl,config);
}
});
}
}
function registerValidSW(swUrl,config) {
navigator.serviceWorker
.register(swUrl)
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
if (installingWorker == null) {
return;
}
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
if (navigator.serviceWorker.controller) {
// At this point,the updated precached content has been fetched,// but the prevIoUs service worker will still serve the older
// content until all client tabs are closed.
console.log(
'New content is available and will be used when all ' +
'tabs for this page are closed.'
);
// Execute callback
if (config && config.onUpdate) {
config.onUpdate(registration);
}
} else {
// At this point,everything has been precached.
// It's the perfect time to display a
// "Content is cached for offline use." message.
console.log('Content is cached for offline use.');
// Execute callback
if (config && config.onSuccess) {
config.onSuccess(registration);
}
}
}
};
};
})
.catch(error => {
console.error('Error during service worker registration:',error);
});
}
function checkValidServiceWorker(swUrl,config) {
// Check if the service worker can be found. If it can't reload the page.
fetch(swUrl)
.then(response => {
// Ensure service worker exists,and that we really are getting a JS file.
const contentType = response.headers.get('content-type');
if (
response.status === 404 ||
(contentType != null && contentType.indexOf('javascript') === -1)
) {
// No service worker found. Probably a different app. Reload the page.
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
window.location.reload();
});
});
} else {
// Service worker found. Proceed as normal.
registerValidSW(swUrl,config);
}
})
.catch(() => {
console.log(
'No internet connection found. App is running in offline mode.'
);
});
}
export function unregister() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.ready.then(registration => {
registration.unregister();
});
}
}
我正在端口3000上运行该应用程序，我可以看到google chrome会抛出如下错误：
服务人员注册失败。我不知道我做错了什么。
请您帮我解决问题？另外，请告诉我您是否还有其他要求。
解决方法
1。您应该在firebase-messaging-sw.js中使用onBackgroundMessage而不是setBackgroundMessageHandler
2.put
export const initializeFirebase = () => {
firebase.initializeApp({
apiKey: "***",authDomain: "***",databaseURL: "***",projectId: "***",storageBucket: "***",messagingSenderId: "***",appId: "***",measurementId: "G-***"
});
const messaging = firebase.messaging();}
和
export const askForPermissioToReceiveNotifications = async (registration) => {
try {
const messaging = firebase.messaging();
await messaging.onMessage(notification => {
console.log('Notification received!',notification);
message.info(notification?.data?.title + ':' + notification?.data?.body)
});
const registration = await navigator.serviceWorker
.register('firebase-message-sw.js',{scope: "/",updateViaCache: 'none'})
.then((registration) => {
return registration;
}).catch(e => {
});
await Notification.requestPermission().then((callBack) => {
console.log(callBack)
}).catch(e => {
});
const token = await messaging.getToken({
vapidKey: 'BML-',serviceWorkerRegistration: registration
});
await //send token
console.log('token do usuário:',token);
return token;
} catch (error) {
console.error(error);
}}
在您的firebase.js文件中
3。在serviceworker.register（）之前调用index.js中的initializeFirebase（）和askForPermissioToReceiveNotifications（）;
对我来说很好...