我们平常用vue开发的时候总觉得vue好像就是专门为了单页面应用而诞生的，其实不是。因为vue在工程化开发的时候很依赖webpack，而webpack是将所有的资源整合到一块，弄成一个单页面。但是vue不止可以做单页面，它还可以做多页面，如果要做多页面的话需要对他的依赖，也就是webpack就是重新配置才可以。

vue的开发有两种，一种是直接的在script标签里引入vue.js文件即可，这样子引入的话个人感觉做小型的多页面会比较舒坦，一旦做大型一点的项目，还是离不开webpack。所以另一种方法也就是基于webpack和vue-cli的工程化开发。下面详解步骤。

先声明，如果用vue进行工程化开发，首先要有node.js，然后再下一个npm，不过一般新版的node都会有npm所以可以不用弄。指令是在命令行里输入。首先第一步就是生成一个vue项目，用指令：

vue init webpack test

博主本人声明的文件名为test，下载好后一路enter，之后便生成了一个vue项目，但是这个vue项目还没有一些相关的依赖，这个时候需要进入到该文件夹里面，输入npm install速不好，则用cnpm install，效果一样。略等几分钟后整个依赖便已经下完，之后输入指令：

npm run dev

则会自动打开一个界面，如果报错不能打开网页的话只有一种原因，那就端口占用，这个时候需要到/config/index.js目录下改端口就行。
当一个vue项目完成好所有的配置后，接下来就是我们的重点了，

glob是webpack安装时依赖的一个第三方模块，还模块允许你使用 *等符号,后面配置需要用到先安装上

npm i glob

image.png

需要修改的文件

image.png

utils

// utils.js文件

var path = require('path')
var config = require('../config')
var ExtractTextPlugin = require('extract-text-webpack-plugin')

exports.assetsPath = function (_path) {
  var assetsSubDirectory = process.env.NODE_ENV === 'production' ?
    config.build.assetsSubDirectory :
    config.dev.assetsSubDirectory
  return path.posix.join(assetsSubDirectory, _path)
}

exports.cssLoaders = function (options) {
  options = options || {}

  var cssLoader = {
    loader: 'css-loader',
    options: {
      minimize: process.env.NODE_ENV === 'production',
      sourceMap: options.sourceMap
    }
  }

  // generate loader string to be used with extract text plugin
  function generateLoaders (loader, loaderOptions) {
    var loaders = [cssLoader]
    if (loader) {
      loaders.push({
        loader: loader + '-loader',
        options: Object.assign({}, loaderOptions, {
          sourceMap: options.sourceMap
        })
      })
    }

    // Extract CSS when that option is specified
    // (which is the case during production build)
    if (options.extract) {
      return ExtractTextPlugin.extract({
        use: loaders,
        fallback: 'vue-style-loader'
      })
    } else {
      return ['vue-style-loader'].concat(loaders)
    }
  }

  // https://vue-loader.vuejs.org/en/configurations/extract-css.html
  return {
    css: generateLoaders(),
    postcss: generateLoaders(),
    less: generateLoaders('less'),
    sass: generateLoaders('sass', { indentedSyntax: true }),
    scss: generateLoaders('sass'),
    stylus: generateLoaders('stylus'),
    styl: generateLoaders('stylus')
  }
}

// Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function (options) {
  var output = []
  var loaders = exports.cssLoaders(options)
  for (var extension in loaders) {
    var loader = loaders[extension]
    output.push({
      test: new RegExp('\\.' + extension + '$'),
      use: loader
    })
  }
  return output
}

/* 这里是添加的部分 ---------------------------- 开始 */

// glob是webpack安装时依赖的一个第三方模块，还模块允许你使用 *等符号, 例如lib/*.js就是获取lib文件夹下的所有js后缀名的文件
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pages文件夹
var PAGE_PATH = path.resolve(__dirname, '../src/pages')
// 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pages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pages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
}
/* 这里是添加的部分 ---------------------------- 结束 */

webpack.base.conf.js

// webpack.base.conf.js 文件

var path = require('path')
var utils = require('./utils')
var config = require('../config')
var vueLoaderConfig = require('./vue-loader.conf')

function resolve (dir) {
  return path.join(__dirname, '..', dir)
}

module.exports = {
  /* 修改部分 ---------------- 开始 */
  entry: utils.entries(),
  /* 修改部分 ---------------- 结束 */
  output: {
    path: config.build.assetsRoot,
    filename: '[name].js',
    publicPath: process.env.NODE_ENV === 'production' ?
      config.build.assetsPublicPath :
      config.dev.assetsPublicPath
  },
  resolve: {
    extensions: ['.js', '.vue', '.json'],
    alias: {
      'vue$': 'vue/dist/vue.esm.js',
      '@': resolve('src'),
      'pages': resolve('src/pages'),
      'components': resolve('src/components')
    }
  },
  module: {
    rules: [{
      test: /\.vue$/,
      loader: 'vue-loader',
      options: vueLoaderConfig
    },
    {
      test: /\.js$/,
      loader: 'babel-loader',
      include: [resolve('src'), resolve('test')]
    },
    {
      test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
      loader: 'url-loader',
      options: {
        limit: 10000,
        name: utils.assetsPath('img/[name].[hash:7].[ext]')
      }
    },
    {
      test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
      loader: 'url-loader',
      options: {
        limit: 10000,
        name: utils.assetsPath('fonts/[name].[hash:7].[ext]')
      }
    }
    ]
  }
}

webpack.dev.conf.js

var utils = require('./utils')
var webpack = require('webpack')
var config = require('../config')
var merge = require('webpack-merge')
var baseWebpackConfig = require('./webpack.base.conf')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')

// add hot-reload related code to entry chunks
// Object.keys(baseWebpackConfig.entry).forEach(function (name) {
//  baseWebpackConfig.entry[name] = ['./build/dev-client'].concat(baseWebpackConfig.entry[name])
// })

// add hot-reload related code to entry chunks
Object.keys(baseWebpackConfig.entry).forEach(function (name) {
  baseWebpackConfig.entry[name] = baseWebpackConfig.entry[name]
})

module.exports = merge(baseWebpackConfig, {
  module: {
    rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap })
  },
  // cheap-module-eval-source-map is faster for development
  devtool: '#cheap-module-eval-source-map',
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    // https://github.com/glenjamin/webpack-hot-middleware#installation--usage
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin(),
    // https://github.com/ampedandwired/html-webpack-plugin
    /* 注释这个区域的文件 ------------- 开始 */
    // new HtmlWebpackPlugin({
    //  filename: 'index.html',
    //  template: 'index.html',
    //  inject: true
    // }),
    /* 注释这个区域的文件 ------------- 结束 */
    new FriendlyErrorsPlugin()

    /* 添加 .concat(utils.htmlPlugin()) ------------------ */
  ].concat(utils.htmlPlugin())
})

webpack.prod.conf.js

var path = require('path')
var utils = require('./utils')
var webpack = require('webpack')
var config = require('../config')
var merge = require('webpack-merge')
var baseWebpackConfig = require('./webpack.base.conf')
var CopyWebpackPlugin = require('copy-webpack-plugin')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var ExtractTextPlugin = require('extract-text-webpack-plugin')
var OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')

var env = config.build.env

var webpackConfig = merge(baseWebpackConfig, {
  module: {
    rules: utils.styleLoaders({
      sourceMap: config.build.productionSourceMap,
      extract: true
    })
  },
  devtool: config.build.productionSourceMap ? '#source-map' : 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 webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      },
      sourceMap: true
    }),
    // extract css into its own file
    new ExtractTextPlugin({
      filename: utils.assetsPath('css/[name].[contenthash].css')
    }),
    // Compress extracted CSS. We are using this plugin so that possible
    // duplicated CSS from different components can be deduped.
    new OptimizeCSSPlugin({
      cssProcessorOptions: {
        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

    /* 注释这个区域的内容 ---------------------- 开始 */
    // new HtmlWebpackPlugin({
    //  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'
    // }),
    /* 注释这个区域的内容 ---------------------- 结束 */

    // split vendor js into its own file
    new webpack.optimize.CommonsChunkPlugin({
      name: 'vendor',
      minChunks: function (module, count) {
        // 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',
      chunks: ['vendor']
    }),
    // copy custom static assets
    new CopyWebpackPlugin([{
      from: path.resolve(__dirname, '../static'),
      to: config.build.assetsSubDirectory,
      ignore: ['.*']
    }])
    /* 该位置添加 .concat(utils.htmlPlugin()) ------------------- */
  ].concat(utils.htmlPlugin())
})

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

module.exports = webpackConfig

npm run dev / npm run build 运行/打包
一个简单的多入口项目就初具模型了，可以实现多个项目共用包资源/组件/接口/工具类等，便于项目管控。