vue + vue-cli2 + webpack resource allocation cdn

How vue-cli2 + webpack construction project vue make static resources such as images and js go cdn, where you can configure it? Now I Details

1.config / index.js can see

module.exports = {
  dev: {...},

  build: {
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
}

dev relative to the local development and debugging use, build for publishing environment

Cdn assetsPublicPath which is to configure static resources, we can re-configure our path cdn corresponding here, such as:

assetsPublicPath: 'https://baidu.com/' , 

2. Of course, if there is only one environment, we just need to how assetsPublicPath written inside dead on the line, but we tend to have multiple environments, such as testing, pre-release, development and so on, that configure it? 
　　First, we distinguish between currently running that environment, node. js commands that can take parameters, so we just re-compile command with parameters for the environment can be, for vue have a special 
reliance on environmental release, refer to: http://www.likecs.com/show-61513 .html

First, the installation-dependent: cross-env

Use cross-env solve the problem of cross-platform environment variable settings

安装：npm i --save-dev cross-env

 

Second, modify the project file package.json

"scripts": {
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "lint": "eslint --ext .js,.vue src --fix",
    "build:dev": "cross-env NODE_ENV=development ENV_CONFIG=dev node build/build.js",
    "build:test": "cross-env NODE_ENV=testing ENV_CONFIG=test node build/build.js",
    "build:pre": "cross-env NODE_ENV=presentation ENV_CONFIG=pre node build/build.js",
    "build:prod": "cross-env NODE_ENV=production ENV_CONFIG=prod node build/build.js"
  },

 

as the picture shows

Here is the command to modify packaging, packaging will later use the following command:

Online Development Environment: npm run build: dev 
line test environment: npm run build: test 
line prefire environment: npm run build: pre 
online production: npm run build: prod

NODE_ENV = xxx ENV_CONFIG = xxx set NODE_ENV webpack when packaged, ENV_CONFIG environment variables

Third, modify the project config configuration file

The following files under the modified project config directory

1, add test.env.js file

'use strict' 
module.exports = { 
  NODE_ENV: "" Testing " ', 
  ENV_CONFIG:" "Test"', 
  API_ROOT: "" HTTP: // (request address line test environment) " ' 
}

2, add pre.env.js file

'use strict' 
module.exports = { 
  NODE_ENV: '' Presentation '', 
  ENV_CONFIG: '' pre ' ", 
  API_ROOT:" "HTTP: // (online environment prefire request address)' ' 
}

3, modify the file dev.env.js

'use strict' 
const = Merge the require ( 'WebPACK-Merge') 
const = prodEnv the require ( './ prod.env') 

// command line parameters acquired NODE_ENV 
const = process.env.NODE_ENV the env 

module.exports = Merge (prodEnv, { 
  NODE_ENV: '' development '', 
  ENV_CONFIG: '' dev '', 
  API_ROOT: env === 'development'? ' "HTTP: // (address request online development environment)' ':' '/ api " '// dev environment formulated service agent, API_ROOT the api is formulated proxy address 
})

4, modify the file prod.env.js

'use strict' 
module.exports = { 
  NODE_ENV: '' Production ' ", 
  ENV_CONFIG:'" Prod " ', 
  API_ROOT:" "HTTP: // (request address line production)" " 
}

5, modify the file index.js

由于本地运行时会产生浏览器跨域的问题，在此文件中配置服务代理。

dev参数下修改如下配置：

proxyTable: {
  '/api': {
    target: 'http://(本地开发环境请求地址)',
    changeOrigin: true, // 是否允许跨域
    pathRewrite: {
      '^/api': '' // 重写
    }
  },
},

 // api是配制的代理地址

如下图所示

build参数下添加如下参数

devEnv: require('./dev.env'),
testEnv: require('./test.env'),
preEnv: require('./pre.env'),
prodEnv: require('./prod.env'),

参数名与文件名对应，此处参数将在 build/webpackage.prod.conf.js 中使用到

将 build 参数下的 assetsPublicPath 参数值修改为 ’./’

如下图所示

config目录结构如图

 

四、修改项目build配置文件

修改项目build目录下的以下文件

1、 修改build.js文件

// process.env.NODE_ENV = 'production'  // 将此行代码注释

// const spinner = ora('building for production...')
const spinner = ora('building for ' + process.env.NODE_ENV + ' of ' + process.env.ENV_CONFIG + ' production...')

如图所示

2、修改utils.js文件

添加各打包环境设置，也可以不改动，将 package.json 文件中的打包命令

cross-env NODE_ENV=xxx ENV_CONFIG=xxx node build/build.js

中的参数 NODE_ENV=xxx 都设为 NODE_ENV=production

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

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


修改后
exports.assetsPath = function (_path) {
  const assetsSubDirectory = process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'development' || process.env.NODE_ENV === 'testing' || process.env.NODE_ENV === 'presentation'
    ? config.build.assetsSubDirectory
    : config.dev.assetsSubDirectory

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

这里涉及到打包和本地运行时所读取的config/index.js文件中的assetsSubDirectory参数路径

3、修改webpack.base.conf.js文件

添加各打包环境设置，也可以不改动，将package.json文件中的打包命令

cross-env NODE_ENV=xxx ENV_CONFIG=xxx node build/build.js

中的参数 NODE_ENV=xxx 都设为 NODE_ENV=production

原代码
output: {
    path: config.build.assetsRoot,
    filename: '[name].js',
    publicPath: process.env.NODE_ENV === 'production'
      ? config.build.assetsPublicPath
      : config.dev.assetsPublicPath
  },


修改后
output: {
    path: config.build.assetsRoot,
    filename: '[name].js',
    publicPath: process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'development' || process.env.NODE_ENV === 'testing' || process.env.NODE_ENV === 'presentation'
      ? config.build.assetsPublicPath
      : config.dev.assetsPublicPath
  },

 

4、修改webpack.prod.conf.js文件

原代码
const env = require('../config/prod.env')


修改后
const env = config.build[process.env.ENV_CONFIG+'Env']

如图所示

将会根据各打包环境设置的参数选择读取 config/index.js 文件下 build 参数中设置的环境配置参数，从而读取到 config 目录下配置的各打包环境的js文件

五、项目中HTTP请求设置

注意符号不是单引号而是反引号

本项目中所有请求统一在api文件中管理，在js文件中获取到各环境配置的请求地址将其添加到请求路径中。

 

如果是直接在文件中调用可将请求地址参数挂载到Vue上进行全局调用

在main.js文件中添加

Vue.prototype.baseURL = process.env.API_ROOT

使用时请求路径参数为

url: `${this.baseURL}/platform/systemUser/login`

六、配置相当于环境cdn

再config/index.js增加如下判断：

let cdn_path = './'
if (process.env.ENV_CONFIG === 'dev') {
  cdn_path = 'https://dev-baidu.com/dev/wx/';
} else if (process.env.ENV_CONFIG === 'prod') {
  cdn_path = 'https://baidu.com/prod/wx/';
}
else if (process.env.ENV_CONFIG === 'test') {
  cdn_path = 'https://test-baidu.com/test/wx/';
}
else if (process.env.ENV_CONFIG === 'pre') {
  cdn_path = 'https://pre-baidu.com/pre/wx/';
}

build: {
...
assetsPublicPath: cdn_path,
}

Following the steps above you can configure multiple perfect solution to the environment.