※前提条件:本文基于 Vue 2.0 创作
引入 compression-webpack-plugin 插件,然后开启 gzip 来解决本问题
npm install --save-dev compression-webpack-plugin
修改 config/index.js 文件
productionGzip 改为:true
“启用或关闭windows功能”里面找到“Internet Information Services”勾选
IIS的配置里面打开“压缩”,开启动态和静态内容压缩
在C:\Windows\System32\inetsrv\config目录,编辑applicationhost.config文件,dynamicTypes节点里面添加下面两行
<add mimeType="application/json" enabled="true" /> <add mimeType="application/json;charset=utf-8" enabled="true" />
变成
<httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files"> <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" /> <dynamicTypes> <add mimeType="text/*" enabled="true" /> <add mimeType="message/*" enabled="true" /> <add mimeType="application/x-javascript" enabled="true" /> <add mimeType="application/javascript" enabled="true" /> <add mimeType="application/json" enabled="true" /> <add mimeType="application/json;charset=utf-8" enabled="true" /> <add mimeType="*/*" enabled="false" /> </dynamicTypes> <staticTypes> <add mimeType="text/*" enabled="true" /> <add mimeType="message/*" enabled="true" /> <add mimeType="application/javascript" enabled="true" /> <add mimeType="application/atom+xml" enabled="true" /> <add mimeType="application/xaml+xml" enabled="true" /> <add mimeType="application/json" enabled="true" /> <add mimeType="application/json;charset=utf-8" enabled="true" /> <add mimeType="image/svg+xml" enabled="true" /> <add mimeType="*/*" enabled="false" /> </staticTypes> </httpCompression>
通过cmd 管理员权限执行 iisreset 重启服务
问题:
ValidationError: Invalid options object. Compression Plugin has been initialized using an options object that does not match the API schema. - options has an unknown property 'asset'. These properties are valid: object { test?, include?, exclude?, algorithm?, compressionOptions?, threshold?, minRatio?, deleteOriginalAssets?, filename? }
对策:
修改 build\webpack.prod.conf.js ,找到如下内容,将 assert 修改为 filename:
webpackConfig.plugins.push( new CompressionWebpackPlugin({ //filename: '[path].gz[query]', filename: '[path][base].gz[query]', //使用这个否则报警 Conflict: Multiple assets emit different content to the same filename assets/js/.gz algorithm: 'gzip', test: new RegExp('\\.(' + config.build.productionGzipExtensions.join('|') + ')$'), threshold: 10240, // 资源大于10240=10KB时会被压缩 minRatio: 0.8, deleteOriginalAssets: false, // 是否删除原资源 }) );
在使用 compression-webpack-plugin 插件时报这个错误,原因是版本问题
TypeError: Cannot read property ‘tapPromise‘ of undefined
先卸载之前安装的compression-webpack-plugin插件
npm uninstall compression-webpack-plugin
再安装指定版本的插件
npm install compression-webpack-plugin@6.1.1
安装插件
npm i webpack-bundle-analyzer -D 或者 cnpm install webpack-bundle-analyzer --save-dev
/build/webpack.prod.conf.js文件中配置:
//文件开始位置 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin // 然后plugins里面,添加配置: plugins: [ new BundleAnalyzerPlugin() ]
在package.json文件中配置:
"scripts": { "analyzer": "NODE_ENV=production npm_config_report=true npm run build" }
运行 npm run build
会自动在浏览器打开:http://127.0.0.1:8888/
注意:需要保证8888端口空闲
webpack升级webpack4后打包出现文件大小警告提示。
实际项目中没有 webpack.config.js 文件时,修改webpack.base.config.js文件中配置
module.exports = { performance: { hints: 'warning', //入口起点的最大体积 整数类型(以字节为单位) maxEntrypointSize: 50000000, //生成文件的最大体积 整数类型(以字节为单位 300k) maxAssetSize: 30000000, //只给出 js 文件的性能提示 assetFilter: function(assetFilename) { return assetFilename.endsWith('.css') || assetFilename.endsWith('.js'); } }, mode: process.env.NODE_ENV === 'production' ? 'production' : 'development', context: path.resolve(__dirname, '../'), entry: { app: ["babel-polyfill", "./src/main.js"] }, ........ }
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