自从习惯开发了单页面应用,对多页面的页面间的相互跳转间没有过渡效果、难维护极度反感。但是最近公司技术老大说,当一个应用越来越大的时候单页面模式应付不来,但是没讲怎么应付不来,所以还得自己去复习一遍这两者的区别:

这样对比的话,单页面的优势确实很大,但当我自己去打开某宝,某东的移动端页面时,确实它们都是多页面应用。为什么?我能想到的就几点:

1.单页面使用的技术对低版本的浏览器不友好,大公司还得兼顾使用低版本浏览器的用户啊

2.功能模块开发来说,比如说单页面的业务公用组件,有时候你都不知道分给谁开发

3.seo优化吧(PS:既然是大应用应该很多人都知道,为什么还要做搜索引擎优化)

 

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公司开发移动端使用的技术是vue,其实老大在要求使用多页面开发的时候,已经搭了一个vue多页面的脚手架供给我们去使用,但是我去看了看源码的时候写得很一般,所以决定自己重新去写过。

思路:

由于vue-cli已经写好了单页面的webpack文件,不去改动之前是它默认的一个页面引用打包的资源。既然是多页面,那么把webpack入口文件改成多个就好了啊。未改动时的webpack.base.conf.js(这个JS的功能主要在于全局配置,比如入口文件,出口文件,解析规则等)

1 // 把箭头部分的入口文件改为以下
2 entry: {
3   \'index\': \'..../main.js\'  // 注意省略号是实际开发时的项目路径
4   \'product\': \'..../main.js\'    
5 }

但是这样做效率得多低下,每增加一个新页面就要手动去添加新的入口,所以这里把入口文件封装为一个函数:

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 1 /**
 2  * 获取多页面入口文件
 3  * @globPath 文件路径
 4  */
 5 const glob = require(\'glob\')
 6 function getEntries(globPath)  {
 7   const entries = glob.sync(globPath).reduce((result, entry) => {
 8     const moduleName = path.basename(path.dirname(entry)) // 获取模块名称
 9     result[moduleName] = entry
10     return result
11   }, {})
12   return entries
13 }
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注意在使用nodejs的glob模块之前,记得先下载依赖

测试一下这个函数

 

然后把webpack.base.config.js改为如下:

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 1 \'use strict\'
 2 const path = require(\'path\')
 3 const utils = require(\'./utils\')
 4 const config = require(\'../config\')
 5 const vueLoaderConfig = require(\'./vue-loader.conf\')
 6 
 7 function resolve (dir) {
 8   return path.join(__dirname, \'..\', dir)
 9 }
10 
11 const glob = require(\'glob\')
12 function getEntries (globPath){
13   const entries = glob.sync(globPath).reduce((result, entry) => {
14     const moduleName = path.basename(path.dirname(entry)) // 获取模块名称
15     result[moduleName] = entry
16     return result
17   }, {})
18   return entries
19 }
20 
21 const entries = getEntries(\'./src/modules/**/*.js\')
22 
23 module.exports = {
24   context: path.resolve(__dirname, \'../\'),
25   entry: entries,   // 改动部分
26   output: {
27     path: config.build.assetsRoot,
28     filename: \'[name].js\',
29     publicPath: process.env.NODE_ENV === \'production\'
30       ? config.build.assetsPublicPath
31       : config.dev.assetsPublicPath
32   },
33   resolve: {
34     extensions: [\'.js\', \'.vue\', \'.json\'],
35     alias: {
36       \'vue$\': \'vue/dist/vue.esm.js\',
37       \'@\': resolve(\'src\'),
38     }
39   },
40   module: {
41     rules: [
42       {
43         test: /\.vue$/,
44         loader: \'vue-loader\',
45         options: vueLoaderConfig
46       },
47       {
48         test: /\.js$/,
49         loader: \'babel-loader\',
50         include: [resolve(\'src\'), resolve(\'test\'), resolve(\'node_modules/webpack-dev-server/client\')]
51       },
52       {
53         test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
54         loader: \'url-loader\',
55         options: {
56           limit: 10000,
57           name: utils.assetsPath(\'img/[name].[hash:7].[ext]\')
58         }
59       },
60       {
61         test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
62         loader: \'url-loader\',
63         options: {
64           limit: 10000,
65           name: utils.assetsPath(\'media/[name].[hash:7].[ext]\')
66         }
67       },
68       {
69         test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
70         loader: \'url-loader\',
71         options: {
72           limit: 10000,
73           name: utils.assetsPath(\'fonts/[name].[hash:7].[ext]\')
74         }
75       }
76     ]
77   },
78   node: {
79     // prevent webpack from injecting useless setImmediate polyfill because Vue
80     // source contains it (although only uses it if it\'s native).
81     setImmediate: false,
82     // prevent webpack from injecting mocks to Node native modules
83     // that does not make sense for the client
84     dgram: \'empty\',
85     fs: \'empty\',
86     net: \'empty\',
87     tls: \'empty\',
88     child_process: \'empty\'
89   }
90 }
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 注意我的多页面目录:

—————————————华丽分割线———————————————————————-

公共配置搞完之后是打包文件:webpack.prod.conf.js,打包文件的修改主要是输出文件的配置,因为要对应入口文件的文件夹,还有就是一个页面对应一个htmlwebpackplugin配置,这个配置是加在文件的plugins里面的,按照上面的消除手动加入配置的思路这里也加入htmlwebpackplugin的配置函数

复制代码
/**
 * 页面打包
 * @entries 打包文件
 * @config 参数配置
 * @module 使用的主体
 */
const HtmlWebpackPlugin = require(\'html-webpack-plugin\')
function pack (entries, module) {
  for (const path in entries) {
    const conf = {
      filename: `modules/${path}/index.html`,
      template: entries[path],   // 模板路径
      inject: true,
      chunks: [\'manifest\', \'vendor\', path]   // 必须先引入公共依赖
    }
    module.plugins.push(new HtmlWebpackPlugin(conf))
  }
}
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最终打包文件改为如下

复制代码
\'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\')
const ExtractTextPlugin = require(\'extract-text-webpack-plugin\')
const OptimizeCSSPlugin = require(\'optimize-css-assets-webpack-plugin\')
const UglifyJsPlugin = require(\'uglifyjs-webpack-plugin\')

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


const glob = require(\'glob\')
function getEntries (globPath){
  const entries = glob.sync(globPath).reduce((result, entry) => {
    const moduleName = path.basename(path.dirname(entry)) // 获取模块名称
    result[moduleName] = entry
    return result
  }, {})
  return entries
}

const entries = getEntries(\'./src/modules/**/*.html\')   // 获取多页面所有入口文件

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: \'modules/[name]/[name].[chunkhash].js\',
    // publicPath: \'/\' // 改为相对路径
    // 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({
      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
    // 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: [\'.*\']
      }
    ])
  ]
})

if (config.build.productionGzip) {
  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())
}


function pack (entries, module) {
  for (const path in entries) {
    const conf = {
      filename: `modules/${path}/index.html`,
      template: entries[path],   // 模板路径
      inject: true,
      chunks: [\'manifest\', \'vendor\', path]   // 必须先引入公共依赖
    }
    module.plugins.push(new HtmlWebpackPlugin(conf))
  }
}

pack(entries, webpackConfig)
module.exports = webpackConfig
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然后启动npm run build尝试打包文件

 

OK,多页面的打包完成

参考:http://blog.csdn.net/u013291076/article/details/53667382

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本文链接:https://www.cnblogs.com/zhangycun/p/10412777.html