webpack 后 webpack-dev-server ，使用的是webpack的js，不自动刷新

js · 2017年5月10日 · 9525 次浏览

webpack 后 webpack-dev-server ，使用的是webpack的js，不自动刷新

整整折磨了我2天，疯了一样；项目结构如下

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/
--index.html
--dist/
--node_modules/
--src/
--package.json
--webpack.config.js

package.json

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{
  "name": "my-webpack-simple-demo",
  "description": "A Vue.js project",
  "version": "1.0.0",
  "author": "wangfan <251941666@qq.com>",
  "private": true,
  "scripts": {
    "ser": "cross-env NODE_ENV=development webpack-dev-server --open --hot --progress",
    "dev": "cross-env NODE_ENV=development webpack-dev-server --hot  --progress",
    "build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
  },
  "dependencies": {
    "element-ui": "^1.3.0-beta.1",
    "vue": "^2.2.1"
  },
  "devDependencies": {
    "babel-core": "^6.0.0",
    "babel-loader": "^6.0.0",
    "babel-plugin-component": "^0.9.1",
    "babel-preset-latest": "^6.0.0",
    "cross-env": "^3.0.0",
    "css-loader": "^0.25.0",
    "echarts": "^3.5.4",
    "echarts-liquidfill": "^1.0.5",
    "file-loader": "^0.9.0",
    "node-sass": "^4.5.0",
    "raw": "^0.1.4",
    "raw-loader": "^0.5.1",
    "sass-loader": "^5.0.1",
    "style-loader": "^0.16.1",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.1",
    "vue-echarts": "^2.3.7",
    "vue-loader": "^11.1.4",
    "vue-resource": "^1.3.1",
    "vue-style-loader": "^1.0.0",
    "vue-template-compiler": "^2.2.1",
    "vuex": "^2.3.1",
    "webpack": "^2.2.0",
    "webpack-dev-server": "^2.2.0"
  }
}

webpack.config.js

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var path = require('path')
var webpack = require('webpack')
 
module.exports = {
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: './dist/',
    filename: 'build.js'
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
            // Since sass-loader (weirdly) has SCSS as its default parse mode, we map
            // the "scss" and "sass" values for the lang attribute to the right configs here.
            // other preprocessors should work out of the box, no loader config like this necessary.
            'scss': 'vue-style-loader!css-loader!sass-loader',
            'sass': 'vue-style-loader!css-loader!sass-loader?indentedSyntax'
          }
          // other vue-loader options go here
        }
      },
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader'
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
        loader: 'file-loader'
      },
      {
        //test: /\.(png|jpg|gif|svg)$/,
        test: /\.(png|jpe?g|gif|svg)(\?\S*)?$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]'
        }
      }
    ]
  },
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    }
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true,
    hot: true,
    inline: true,
    proxy:{
      '/report': {
        target: 'http://www.vking.com/livezilla/report.php',
        //secure: false
      }
    }
  },
  performance: {
    hints: false
  },
  devtool: '#eval-source-map'
}
 
if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])
}

刚开始使用这份配置，一切顺利，dev开发好后build，上传服务器，一切正常；

当我在回到run dev后，发现它一直再使用了dist下的js，于是折腾了2天，改js名字、改dist目录名、各种找、各种改，结果都不行；

最后机缘巧合下改了webpack.config.js 第八行，将publicPath: ‘./dist/’ 改为了publicPath: ‘dist/’ ；

npm run dev 时，竟然神奇的正常了，真是撞大运编程啊

此时npm run build将找不见dist下的资源，使用以下方式判断环境

publicPath: process.env.NODE_ENV === ‘production’?’./dist/’:’/dist/’

npm run build 时必须把 npm run dev停掉

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