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Vue-搭建本地服务器(四)

Vue-搭建本地服务器(四)

作者: 小二哥很二 | 来源:发表于2020-05-01 14:14 被阅读0次

    1、安装:这里所有的安装都要注意版本,要和vue脚手架对应
    cnpm install --save-dev webpack-dev-server
    2、配置webpack.config.js文件的module.exports:

    const path = require('path');
    const VueLoaderPlugin = require('vue-loader/lib/plugin');
    const webpack  = require('webpack');
    const HtmlWebpackPlugin = require('html-webpack-plugin');
    const UglifyjsWebpackPlugin = require('uglifyjs-webpack-plugin')
    
    module.exports = {
        //entry指定入口文件,可以添加多个入口,然后生成多个出口
        entry:{
            home:path.resolve(__dirname,'./src/main.js')
        },
        //output指定出口文件,path必须是绝对路径,要先导入一个path,依赖与node
        output:{
            //node语法,__dirname获取当前文件的路径
            path:path.resolve(__dirname,'dist'),
            //这里的name是entry里的key,即home,这么写是方便生成多个出口时候的区分
            filename:'[name].js'
            //当用file-loader加载时,由于打包后图片在dist里,html读取的路径不一样,所以加一个publicpath
            // publicPath:'dist/'
        },
        module:{
            rules: [
                {   //css-loader只负责将css文件解析加载,不负责渲染到html里,所以还需要一个sytle-loader
                    test: /\.css$/,
                    //webpack读取多个loader时,是从右往左读的,所以此loader顺序不能改变
                    use: [ 'style-loader', 'css-loader' ]
                },
                {
                    test: /\.less$/,
                    use: [{
                        loader: "style-loader" // creates style nodes from JS strings,渲染到DOM
                    }, {
                        loader: "css-loader" // translates CSS into CommonJS,解析css
                    }, {
                        loader: "less-loader" // compiles Less to CSS,加载less编译成css
                    }]
                },
                {
                    test: /\.(png|jpg|gif)$/,   //图片过滤
                    use: [
                        {
                            loader: 'url-loader',
                            options: {
                                //当加载的图片小于limit时候,会将图片编译成base64字符串形式
                                //当加载的图片大于limit时候,要用file-loader加载,但是要更改路径
                                limit: 8192,
                                //这里的【name】是指打包之前图片的名字,hash为哈希值,ext为扩展名,都为变量,固定写法
                                name:'img/[name].[hash:8].[ext]'
                            }
                        }
                    ]
                },
                {   //大概从14开始,就需要插件来支持使用vue-loader,如果不安装,就改下package.json里的vue-loader版本,然后npm install
                    test: /\.vue$/,
                    use: ['vue-loader']
                }
            ]
        },
        //此插件就是支撑vue-loader使用的
        plugins: [
            new VueLoaderPlugin(),
            new webpack.BannerPlugin('最终版权归小二哥所有'),
            //根据index.html生成dist里的index.html
            new HtmlWebpackPlugin({
                template:`index.html`
            }),
            new UglifyjsWebpackPlugin()
        ],
        //添加resolve字段,指定vue编译版本为runtime-compiler
        resolve:{
            //alias别名
            alias:{
                'vue$':'vue/dist/vue.esm.js'
            },
            //指定哪些文件的后缀名省略
            extensions: ['.js','.css','.vue']
        },
        //配置devServer本地服务器
        devServer:{
            //服务目录
            contentBase:'./dist',
            //是否实时刷新
            inline:true
            //也可以加个端口port:xxx
        }
    }
    

    3、配置package.json:加入命令:"server": "webpack-dev-server --open",--open是自动打开浏览器的意思

    {
      "name": "meetwebpack",
      "version": "1.0.0",
      "description": "",
      "main": "webpack.config.js",
      "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1",
        "dev": "webpack --mode=development",
        "build": "webpack --mode=production",
        "server": "webpack-dev-server --open"
      },
      "author": "",
      "license": "ISC",
      "devDependencies": {
        "babel-core": "^6.26.3",
        "babel-loader": "^8.1.0",
        "babel-preset-env": "^1.7.0",
        "css-loader": "^3.5.3",
        "file-loader": "^6.0.0",
        "html-webpack-plugin": "^4.2.1",
        "less": "^3.11.1",
        "less-loader": "^6.0.0",
        "style-loader": "^1.2.0",
        "uglifyjs-webpack-plugin": "^2.2.0",
        "url-loader": "^4.1.0",
        "vue-loader": "^15.9.1",
        "vue-template-compiler": "^2.6.11",
        "webpack": "^4.43.0",
        "webpack-cli": "^3.3.11",
        "webpack-dev-server": "^3.10.3"
      },
      "dependencies": {
        "vue": "^2.6.11"
      }
    }
    

    4、执行命令运行:
    npm run server,当修改代码的时候就会实时刷新,开发就可以实时测试
    5、开发本地服务测试完毕后,重新打包即可
    npm run dev

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