![](/img/trans.png)
[英]How to use workbox-webpack-plugin together with Nuxt PWA
[英]workbox-webpack-plugin service worker does not fetch from cache when online
我有一個可以在localhost上正常運行的軟件,但是無法從緩存中在線獲取。 像往常一樣,它工作正常,但是以某種方式停止了。
文件被緩存,但是請求始終進入網絡。 我已經檢查了開發工具上的文件。
我也不確定緩存的過期設置。
以下是相關代碼:
registerServiceWorker.js
const isLocalhost = Boolean(
window.location.hostname === 'localhost' ||
window.location.hostname === '[::1]' ||
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
export default function register() {
if ('serviceWorker' in navigator) {
const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
if (publicUrl.origin !== window.location.origin) {
return;
}
window.addEventListener('load', () => {
const swUrl = `/dist/sw-dist.js`;
if (isLocalhost) {
checkValidServiceWorker(swUrl);
navigator.serviceWorker.ready.then(() => {
console.log(
'This web app is being served cache-first by a service ' +
'worker.'
);
});
} else {
registerValidSW(swUrl);
}
});
}
}
function registerValidSW(swUrl) {
navigator.serviceWorker
.register(swUrl)
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
registration.pushManager.subscribe({userVisibleOnly: true});
if (navigator.serviceWorker.controller) {
console.log('New content is available; please refresh.');
} else {
console.log('Content is cached for offline use.');
}
}
};
};
})
.catch(error => {
console.log('error', error);
console.error('Error during service worker registration:', error);
});
}
function checkValidServiceWorker(swUrl) {
fetch(swUrl)
.then(response => {
if (
response.status === 404 ||
response.headers.get('content-type').indexOf('javascript') === -1
) {
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
window.location.reload();
});
});
} else {
// Service worker found. Proceed as normal.
registerValidSW(swUrl);
}
})
.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();
});
}
}
服務人員的分發代碼如下。 您可能會看到使用cacheFirst策略的在線版本,就像我都嘗試過的那樣。
importScripts("precache-manifest.1d6e1c2332794b82f85bd1c2e608d2b6.js", "https://storage.googleapis.com/workbox-cdn/releases/3.6.3/workbox-sw.js");
workbox.skipWaiting();
workbox.clientsClaim();
workbox.routing.registerRoute(
new RegExp('/dist/img/*'),
workbox.strategies.staleWhileRevalidate({
cacheName: 'img-cache',
plugins: [
new workbox.expiration.Plugin({
maxAgeSeconds: 360 * 24 * 60 * 60,
}),
],
})
);
workbox.routing.registerRoute(
new RegExp('/dist*'),
workbox.strategies.staleWhileRevalidate({
cacheName: 'js-cache',
plugins: [
new workbox.expiration.Plugin({
maxAgeSeconds: 30 * 24 * 60 * 60,
}),
],
})
);
workbox.routing.registerRoute(
new RegExp('/dist/css*'),
workbox.strategies.staleWhileRevalidate({
cacheName: 'css-cache',
plugins: [
new workbox.expiration.Plugin({
maxAgeSeconds: 10 * 24 * 60 * 60,
}),
],
})
);
workbox.precaching.precacheAndRoute(self.__precacheManifest || []);
我在很多方面都錯了。 即使在本地主機上,也沒有從緩存中獲取文件。 我誤讀了Firefox的開發工具網絡標簽。 它可以清楚地顯示文件在工作正常時是由“服務工作者”提供的。
問題在於服務工作者腳本的放置位置。 它應該是根源。
這是完成該任務的webpack.config.js(Webpack 4):
const path = require('path');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const dist = 'dist';
const {InjectManifest} = require('workbox-webpack-plugin');
module.exports = {
mode: "production",
entry: {
home:'./src/entry_home.js',
rest:'./src/entry_rest.js',
mini:'./src/entry_mini.js',
},
output: {
//path: path.resolve(__dirname, dist),
path: __dirname+'/dist',
//filename: "[name].[chunkhash].soeez.js",
filename: "[name].0211.js",
publicPath: "/dist/"
},
externals: {
jquery: 'jQuery'
},
module: {
rules: [
//{ test: /\.css$/, use: [ 'style-loader', 'css-loader' ]},
//{ test: /\.jsx$/, loader: 'babel-loader', exclude: /node_modules/ },
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader",
}
},
]
},
optimization: {
splitChunks: {
cacheGroups: {
commons: {
name: 'common',
chunks: 'initial',
minChunks: 2
}
}
}
},
plugins: [
new CleanWebpackPlugin([
dist + '/*.js'
]),
//new BundleAnalyzerPlugin(),
new InjectManifest({
swSrc: './src/sw_src.js',
swDest: '../sw-dist.0211.js',
}),
]
};
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.