vue基于webpack配置多文件入口

先查看一下搭建好的文件结构：

---

根据 vue-cli 搭建的基于webpack 的项目，如图所示，更改build 文件夹里面的相关文件。

---

1.第一步： 更改 build - utils.js 文件，配置多文件入口， 在文件最后加入以下代码：首先 npm install glob

var glob = require('glob')
// 页面模板
var HtmlWebpackPlugin = require('html-webpack-plugin')
// 取得相应的页面路径，因为之前的配置，所以是src文件夹下的templates文件夹
var PAGE_PATH = path.resolve(__dirname, '../src/templates')
// 用于做相应的merge处理
var merge = require('webpack-merge')

//多入口配置
// 通过glob模块读取templates文件夹下的所有对应文件夹下的js后缀文件，如果该文件存在
// 那么就作为入口处理
exports.entries = function() {
    var entryFiles = glob.sync(PAGE_PATH + '/*/*.js')
    var map = {}
    entryFiles.forEach((filePath) => {
        var filename = filePath.substring(filePath.lastIndexOf('\/') + 1, filePath.lastIndexOf('.'))
        map[filename] = filePath
    })
    return map
}

//多页面输出配置
// 与上面的多页面入口配置相同，读取templates文件夹下的对应的html后缀文件，然后放入数组中
exports.htmlPlugin = function() {
    let entryHtml = glob.sync(PAGE_PATH + '/*/*.html')
    let arr = []
    entryHtml.forEach((filePath) => {
        let filename = filePath.substring(filePath.lastIndexOf('\/') + 1, filePath.lastIndexOf('.'))
        let conf = {
            // 模板来源
            template: filePath,
            // 文件名称
            filename: filename + '.html',
            // 页面模板需要加对应的js脚本，如果不加这行则每个页面都会引入所有的js脚本
            chunks: ['manifest', 'vendor', filename],
            inject: true
        }
        if (process.env.NODE_ENV === 'production') {
            conf = merge(conf, {
                minify: {
                    removeComments: true,
                    collapseWhitespace: true,
                    removeAttributeQuotes: true
                },
                chunksSortMode: 'dependency'
            })
        }
        arr.push(new HtmlWebpackPlugin(conf))
    })
    return arr
}

---

第二步：更改build\webpack.dev.conf.js，代码更改步骤如下：

'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const path = require('path')
const baseWebpackConfig = require('./webpack.base.conf')
// const CopyWebpackPlugin = require('copy-webpack-plugin')     //第一步：注释copy-webpack-plugin/HtmlWebpackPlugin 模块
// const HtmlWebpackPlugin = require('html-webpack-plugin')
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')

const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)      

const devWebpackConfig = merge(baseWebpackConfig, {
  module: {
    rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
  },
  // cheap-module-eval-source-map is faster for development
  devtool: config.dev.devtool,

  // these devServer options should be customized in /config/index.js
  devServer: {
    clientLogLevel: 'warning',
    // historyApiFallback: {
    //   rewrites: [
    //     { from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') },
    //   ],
    // },
    historyApiFallback:true,    //第二步：将historyApiFallback的状态更改为 true
    hot: true,
    contentBase: false, // since we use CopyWebpackPlugin.
    compress: true,
    host: HOST || config.dev.host,
    port: PORT || config.dev.port,
    open: config.dev.autoOpenBrowser,
    overlay: config.dev.errorOverlay
      ? { warnings: false, errors: true }
      : false,
    publicPath: config.dev.assetsPublicPath,
    proxy: config.dev.proxyTable,
    quiet: true, // necessary for FriendlyErrorsPlugin
    watchOptions: {
      poll: config.dev.poll,
    }
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': require('../config/dev.env')
    }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
    new webpack.NoEmitOnErrorsPlugin(),
    // https://github.com/ampedandwired/html-webpack-plugin
    // new HtmlWebpackPlugin({        //第三步：注释HtmlWebpackPlugin /CopyWebpackPlugin模块
    //   filename: 'index.html',
    //   template: 'index.html',
    //   inject: true
    // }),
    // copy custom static assets
    // new CopyWebpackPlugin([
    //   {
    //     from: path.resolve(__dirname, '../static'),
    //     to: config.dev.assetsSubDirectory,
    //     ignore: ['.*']
    //   }
    // ])
    new FriendlyErrorsPlugin()    //第四步：更改为如下代码
  ].concat(utils.htmlPlugin())
})

module.exports = new Promise((resolve, reject) => {
  portfinder.basePort = process.env.PORT || config.dev.port
  portfinder.getPort((err, port) => {
    if (err) {
      reject(err)
    } else {
      // publish the new Port, necessary for e2e tests
      process.env.PORT = port
      // add port to devServer config
      devWebpackConfig.devServer.port = port

      // Add FriendlyErrorsPlugin
      devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
        compilationSuccessInfo: {
          messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
        },
        onErrors: config.dev.notifyOnErrors
        ? utils.createNotifierCallback()
        : undefined
      }))

      resolve(devWebpackConfig)
    }
  })
})

---

第三步：更改 build\webpack.prod.conf.js 文件，代码如下：

'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
// const HtmlWebpackPlugin = require('html-webpack-plugin') //第三步：注释HtmlWebpackPlugin模块
const ExtractTextPlugin = require('extract-text-webpack-plugin')
// const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin') //第二步：注释OptimizeCSSPlugin模块
// const UglifyJsPlugin = require('uglifyjs-webpack-plugin') //第一步：注释UglifyJsPlugin模块

const env = require('../config/prod.env')

const webpackConfig = merge(baseWebpackConfig, {
  module: {
    rules: utils.styleLoaders({
      sourceMap: config.build.productionSourceMap,
      extract: true,
      usePostCSS: true
    })
  },
  devtool: config.build.productionSourceMap ? config.build.devtool : false,
  output: {
    path: config.build.assetsRoot,
    filename: utils.assetsPath('js/[name].[chunkhash].js'),
    chunkFilename: utils.assetsPath('js/[id].[chunkhash].js')
  },
  plugins: [
    // http://vuejs.github.io/vue-loader/en/workflow/production.html
    new webpack.DefinePlugin({
      'process.env': env
    }),
    new UglifyJsPlugin({
      uglifyOptions: {
        compress: {
          warnings: false
        }
      },
      sourceMap: config.build.productionSourceMap,
      parallel: true
    }),
    // extract css into its own file
    new ExtractTextPlugin({
      filename: utils.assetsPath('css/[name].[contenthash].css'),
      // Setting the following option to `false` will not extract CSS from codesplit chunks.
      // Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
      // It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`, 
      // increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
      allChunks: true,
    }),
    // Compress extracted CSS. We are using this plugin so that possible
    // duplicated CSS from different components can be deduped.

    // new OptimizeCSSPlugin({  //第二步：注释OptimizeCSSPlugin模块
    //   cssProcessorOptions: config.build.productionSourceMap
    //     ? { safe: true, map: { inline: false } }
    //     : { safe: true }
    // }),

    // generate dist index.html with correct asset hash for caching.
    // you can customize output by editing /index.html
    // see https://github.com/ampedandwired/html-webpack-plugin
    // new HtmlWebpackPlugin({    //第三步：注释HtmlWebpackPlugin模块
    //   filename: config.build.index,
    //   template: 'index.html',
    //   inject: true,
    //   minify: {
    //     removeComments: true,
    //     collapseWhitespace: true,
    //     removeAttributeQuotes: true
    //     // more options:
    //     // https://github.com/kangax/html-minifier#options-quick-reference
    //   },
    //   // necessary to consistently work with multiple chunks via CommonsChunkPlugin
    //   chunksSortMode: 'dependency'
    // }),
    // keep module.id stable when vendor modules does not change
    new webpack.HashedModuleIdsPlugin(),
    // enable scope hoisting
    new webpack.optimize.ModuleConcatenationPlugin(),
    // split vendor js into its own file
    new webpack.optimize.CommonsChunkPlugin({
      name: 'vendor',
      minChunks (module) {
        // any required modules inside node_modules are extracted to vendor
        return (
          module.resource &&
          /\.js$/.test(module.resource) &&
          module.resource.indexOf(
            path.join(__dirname, '../node_modules')
          ) === 0
        )
      }
    }),
    // extract webpack runtime and module manifest to its own file in order to
    // prevent vendor hash from being updated whenever app bundle is updated
    new webpack.optimize.CommonsChunkPlugin({
      name: 'manifest',
      minChunks: Infinity
    }),
    // This instance extracts shared chunks from code splitted chunks and bundles them
    // in a separate chunk, similar to the vendor chunk
    // see: https://webpack.js.org/plugins/commons-chunk-plugin/#extra-async-commons-chunk
    new webpack.optimize.CommonsChunkPlugin({
      name: 'app',
      async: 'vendor-async',
      children: true,
      minChunks: 3
    }),

    // copy custom static assets
    new CopyWebpackPlugin([
      {
        from: path.resolve(__dirname, '../static'),
        to: config.build.assetsSubDirectory,
        ignore: ['.*']
      }
    ])
  ].concat(utils.htmlPlugin())      //第四步：加上 .concat(utils.htmlPlugin())
})

// if (config.build.productionGzip) {     //第五步：注释
//   const CompressionWebpackPlugin = require('compression-webpack-plugin')

//   webpackConfig.plugins.push(
//     new CompressionWebpackPlugin({
//       asset: '[path].gz[query]',
//       algorithm: 'gzip',
//       test: new RegExp(
//         '\\.(' +
//         config.build.productionGzipExtensions.join('|') +
//         ')$'
//       ),
//       threshold: 10240,
//       minRatio: 0.8
//     })
//   )
// }

if (config.build.bundleAnalyzerReport) {
  const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
  webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}

module.exports = webpackConfig

---

第四步：千万不要忽略了build\webpack.base.conf.js配置文件的entry入口的更改，不然后续多页配置成功但是模块路由引入不成功

PS：该项目结构的多文件入口定义的是templates下面的模块，所以每一个不同的模块必须用文件夹包起来，不然wabpack解析的时候找不到。
每一次建立一个新的模块以后，重新启动 npm run dev 编译项目，不然找不到会报错
如果要使用状态机，记住像 router 一样在每个模块里面去定义属于自己的store

---

多页开发的项目结构也可以是这样的：

访问地址变为：
http://localhost:8080/one.html#/
http://localhost:8080/two.html#/