【敲黑板】手把手教你vue-cli单页到多页应用

摘要：到多页应用前言我有一个创建的项目，但是我想做成多页应用，怎么办，废话不多说，直接开撸约定新增代码部分在和中间删除注释代码部分在和中间，很多东西都写在注释里第一步一个项目新建一个项目官网默认使用的服务，这个服务是做不了单页的，需要手动建一

前言：我有一个cli创建的vue项目，但是我想做成多页应用，怎么办，废话不多说，直接开撸~

约定：新增代码部分在//add和//end中间 删除(注释)代码部分在//del和//end中间，很多东西都写在注释里

新建一个vue项目 官网 vue init webpack demo
cli默认使用webpack的dev-server服务，这个服务是做不了单页的，需要手动建一个私服叫啥你随意 一般叫dev.server或者dev.client

进入刚刚创建vue项目 cd demo
在目录下面找到build/utils.js文件
修改部分：

utils.js

"use strict"
const path = require("path")
const config = require("../config")
const ExtractTextPlugin = require("extract-text-webpack-plugin")
const packageConfig = require("../package.json")

//add
const glob = require("glob");
const HtmlWebpackPlugin = require("html-webpack-plugin");   //功能：生成html文件及js文件并把js引入html
const pagePath = path.resolve(__dirname, "../src/views/");  //页面的路径，比如这里我用的views，那么后面私服加入的文件监控器就会从src下面的views下面开始监控文件
//end

exports.assetsPath = function (_path) {
  const assetsSubDirectory = process.env.NODE_ENV === "production"
    ? config.build.assetsSubDirectory
    : config.dev.assetsSubDirectory

  return path.posix.join(assetsSubDirectory, _path)
}

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

  const cssLoader = {
    loader: "css-loader",
    options: {
      sourceMap: options.sourceMap
    }
  }

  const postcssLoader = {
    loader: "postcss-loader",
    options: {
      sourceMap: options.sourceMap
    }
  }

  // generate loader string to be used with extract text plugin
  function generateLoaders (loader, loaderOptions) {
    const loaders = options.usePostCSS ? [cssLoader, postcssLoader] : [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) {
  const output = []
  const loaders = exports.cssLoaders(options)

  for (const extension in loaders) {
    const loader = loaders[extension]
    output.push({
      test: new RegExp("." + extension + "$"),
      use: loader
    })
  }

  return output
}

exports.createNotifierCallback = () => {
  const notifier = require("node-notifier")

  return (severity, errors) => {
    if (severity !== "error") return

    const error = errors[0]
    const filename = error.file && error.file.split("!").pop()

    notifier.notify({
      title: packageConfig.name,
      message: severity + ": " + error.name,
      subtitle: filename || "",
      icon: path.join(__dirname, "logo.png")
    })
  }
}

//add  新增一个方法处理入口文件（单页应用的入口都是写死，到时候替换成这个方法）
exports.createEntry = () => {
  let files = glob.sync(pagePath + "/**/*.js");
  let entries = {};
  let basename;
  let foldername;

  files.forEach(entry => {
    // Filter the router.js
    basename = path.basename(entry, path.extname(entry), "router.js");
    foldername = path.dirname(entry).split("/").splice(-1)[0];
    // If foldername not equal basename, doing nothing
    // The folder maybe contain more js files, but only the same name is main
    if (basename === foldername) {
      entries[basename] = process.env.NODE_ENV === "development" ?
        [
          "webpack-hot-middleware/client?noInfo=true&reload=true&path=/__webpack_hmr&timeout=20000",
          entry
        ]: [entry];
    }
  });
  return entries;
};
//end

//add 新增出口文件
exports.createHtmlWebpackPlugin = (publicModule) => {
  let files = glob.sync(pagePath + "/**/*.html", {matchBase: true});
  let entries = exports.createEntry();
  let plugins = [];
  let conf;
  let basename;
  let foldername;
  publicModule = publicModule || [];

  files.forEach(file => {
    basename = path.basename(file, path.extname(file));
    foldername = path.dirname(file).split("/").splice(-1).join("");

    if (basename === foldername) {
      conf = {
        template: file,
        filename: basename + ".html",
        inject: true,
        chunks: entries[basename] ? [basename] : []
      };
      if (process.env.NODE_ENV !== "development") {
        conf.chunksSortMode = "dependency";
        conf.minify = {
          removeComments: true,
          collapseWhitespace: true,
          removeAttributeQuotes: true
        };
        // 在构建生产环境时，需要指定共用模块
        conf.chunks = [...publicModule, ...conf.chunks];
      }

      plugins.push(new HtmlWebpackPlugin(conf));
    }
  });
  return plugins;
};
//end

从express新建私服并配置(build文件夹下新建 我这里叫webpack.dev.client.js)

webpack.dev.client.js

/**
 * created by qbyu2 on 2018-05-30
 * express 私服
 * */
"use strict";

const fs = require("fs");
const path = require("path");
const express = require("express");
const webpack = require("webpack");
const webpackDevMiddleware = require("webpack-dev-middleware");   //文件监控(前面配置了从views下面监控)
const webpackHotMiddleware = require("webpack-hot-middleware");   //热加载
const config = require("../config");
const devWebpackConfig = require("./webpack.dev.conf");
const proxyMiddleware = require("http-proxy-middleware");   //跨域

const proxyTable = config.dev.proxyTable;

const PORT = config.dev.port;
const HOST = config.dev.host;
const assetsRoot = config.dev.assetsRoot;
const app = express();
const router = express.Router();
const compiler = webpack(devWebpackConfig);

let devMiddleware  = webpackDevMiddleware(compiler, {
  publicPath: devWebpackConfig.output.publicPath,
  quiet: true,
  stats: {
    colors: true,
    chunks: false
  }
});

let hotMiddleware = webpackHotMiddleware(compiler, {
  path: "/__webpack_hmr",
  heartbeat: 2000
});

app.use(hotMiddleware);
app.use(devMiddleware);

Object.keys(proxyTable).forEach(function (context) {
  let options = proxyTable[context];
  if (typeof options === "string") {
    options = {
      target: options
    };
  }
  app.use(proxyMiddleware(context, options));
});

//双路由   私服一层控制私服路由    vue的路由控制该页面下的路由
app.use(router)
app.use("/static", express.static(path.join(assetsRoot, "static")));

let sendFile = (viewname, response, next) => {
  compiler.outputFileSystem.readFile(viewname, (err, result) => {
    if (err) {
      return (next(err));
    }
    response.set("content-type", "text/html");
    response.send(result);
    response.end();
  });
};

//拼接方法
function pathJoin(patz) {
  return path.join(assetsRoot, patz);
}

/**
 * 定义路由(私服路由 非vue路由)
 * */

// favicon
router.get("/favicon.ico", (req, res, next) => {
  res.end();
});

// http://localhost:8080/
router.get("/", (req, res, next)=>{
  sendFile(pathJoin("index.html"), res, next);
});

// http://localhost:8080/home
router.get("/:home", (req, res, next) => {
  sendFile(pathJoin(req.params.home + ".html"), res, next);
});

// http://localhost:8080/index
router.get("/:index", (req, res, next) => {
  sendFile(pathJoin(req.params.index + ".html"), res, next);
});

module.exports = app.listen(PORT, err => {
  if (err){
    return
  }
  console.log(`Listening at http://${HOST}:${PORT}
`);
})

私服创建好了 安装下依赖
有坑。。。
webpack和热加载版本太高太低都不行
npm install webpack@3.10.0 --save-dev
npm install webpack-dev-middleware --save-dev
npm install webpack-hot-middleware@2.21.0 --save-dev
npm install http-proxy-middleware --save-dev

webpack.base.conf.js

把原来写死的
entry: {
    app: "./src/index.js"
  },
改为：
entry: utils.createEntry(),

webpack.dev.conf.js

"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")
const HtmlWebpackPlugin = require("html-webpack-plugin")
const FriendlyErrorsPlugin = require("friendly-errors-webpack-plugin")
const portfinder = require("portfinder")

process.env.NODE_ENV = "development";

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
  //del  注掉SPA的服务器
  // devServer: {
  //   clientLogLevel: "warning",
  //   historyApiFallback: {
  //     rewrites: [
  //       { from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, "index.html") },
  //     ],
  //   },
  //   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,
  //   }
  // },
  //end
  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
    //del   注释掉spa固定的单页出口  末尾动态配上出口
    // new HtmlWebpackPlugin({
    //   filename: "index.html",
    //   template: "index.html",
    //   inject: true
    // }),
    //end
    // copy custom static assets
    new CopyWebpackPlugin([
      {
        from: path.resolve(__dirname, "../static"),
        to: config.dev.assetsSubDirectory,
        ignore: [".*"]
      }
    ])
  ]
  //add
    .concat(utils.createHtmlWebpackPlugin())
  //end
})
//del
// 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)
//     }
//   })
// })
//end
module.exports = devWebpackConfig;

webpack.prod.conf.js

plugins最后加上.concat(utils.createHtmlWebpackPlugin(["manifest", "vendor"]))
test环境一样

scripts下面"dev":
这样执行的时候就不会走默认的dev-server而走你的私服了

"scripts": {
    "dev": "node build/webpack.dev.client.js",
    "start": "npm run dev",
    "build": "node build/build.js"
  },

src目录下新建 views文件夹 （代码注释里有 当时配的目录跟这个一致就可以 随便你命名 遵循命名规范就行）
views 文件夹下新建两个文件夹index和home 代表多页 每页多带带一个文件夹 文件夹下建对应文件

打包改为相对路径config/index.js
build下面

assetsPublicPath: "/",   =>   assetsPublicPath: "./",

最后，npm run dev 或者 npm run build

这个时候你会发现，特么的什么鬼文章 报错了啊
稍安勿躁~
两个地方，

1.webpack.dev.client.js

//双路由   私服一层控制私服路由    vue的路由控制该页面下的路由
app.use(router)
app.use("/static", express.static(path.join(assetsRoot, "static")));

这个assetsRoot cli创建的时候是没有的 在config/index.js 下面找到dev加上

assetsRoot: path.resolve(__dirname, "../dist"),

2.还是版本问题

webpack-dev-middleware 默认是3.1.3版本但是会报错
具体哪个版本不报错我也不知道

context.compiler.hooks.invalid.tap("WebpackDevMiddleware", invalid);

找不到invalid 源码里面是有的
卸载webpack-dev-middleware

npm uninstall webpack-dev-middleware

使用dev-server自带的webpack-dev-middleware （cli单页应用是有热加载的）
重新install dev-server

npm install webpack-dev-server@2.10.0 --save-dev

npm run dev

建议：cli一个vue的demo项目 从头撸一遍 再在实际项目里使用，而不是copy一下运行没问题搞定~
建议而已，你怎么打人，呜呜呜~

快过节了，觉得本文对你有用的话请随意打赏，让作者可以买个棒棒糖吃~

-------------------------------------------6.1更-----------------------------------------
留了一个坑，一天了，有赞有收藏，没见人评论指出坑，心痛的无法呼吸~

build 后 没有引入共用模块

代码已更新~ build后可正常访问...

代码仓库：github

注：内容有不当或者错误处请指正~转载请注明出处~谢谢合作！