###1. Project optimization
Implementation steps:
A. Generate a package report and optimize the project according to the report
B. Enable CDN for third-party libraries
C. Load Element-UI components on demand
D. Route lazy loading
E. Home page content customization
###2. Adding a progress bar To
add a progress bar effect to the project, first open the project console, open the dependencies, install nprogress and
open main.js , and write the following code
//导入进度条插件
import NProgress from 'nprogress'
//导入进度条样式
import 'nprogress/nprogress.css'
.....
//请求在到达服务器之前，先会调用use中的这个回调函数来添加请求头信息
axios.interceptors.request.use(config => {
//当进入request拦截器，表示发送了请求，我们就开启进度条
NProgress.start()
//为请求头对象，添加token验证的Authorization字段
config.headers.Authorization = window.sessionStorage.getItem("token")
//必须返回config
return config
})
//在response拦截器中，隐藏进度条
axios.interceptors.response.use(config =>{
//当进入response拦截器，表示请求已经结束，我们就结束进度条
NProgress.done()
return config
})
###3. Modify the code
according to the error report. Change the corresponding code according to ESLint's warning prompt
. Change the setting "printWidth": 200 in the .prettierrc file, and change the number of words per line of code to 200
{
"semi":false,
"singleQuote":true,
"printWidth":200
}
###4. Execute build to
install a plug-in (babel-plugin-transform-remove-console). Remove all console information during the project build phase.
Open the project console, click Dependency -> Development Dependency, and enter babel-plugin-transform- remove-console, install
Open babel.config.js, edit the code as follows:
//项目发布阶段需要用到的babel插件
const productPlugins = []
//判断是开发还是发布阶段
if(process.env.NODE_ENV === 'production'){
//发布阶段
productPlugins.push("transform-remove-console")
}
module.exports = {
"presets": [
"@vue/app"
],
"plugins": [
[
"component",
{
"libraryName": "element-ui",
"styleLibraryName": "theme-chalk"
}
],
...productPlugins
]
}
###5. Generate a packaging report
A. Generate a packaging report in the form of command line
vue-cli-service build --report
B. Generate a packaging report in the vue console
Click "Task" => "Build" => "Run" to
complete the operation Then click "Analysis" on the right, and view the report in the "Control Panel" panel
###6. Modify the default configuration of webpack By
default, the project generated by vue-cli 3.0 hides the webpack configuration items. If we need to configure webpack, we need to configure
it through vue.config.js.
Create the vue.config.js file in the project root directory,
module.exports = {
chainWebpack:config=>{
//发布模式
config.when(process.env.NODE_ENV === 'production',config=>{
//entry找到默认的打包入口，调用clear则是删除默认的打包入口
//add添加新的打包入口
config.entry('app').clear().add('./src/main-prod.js')
})
//开发模式
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
})
}
}
Supplement:
chainWebpack can modify the webpack configuration in the form of chain programming,
configureWebpack can modify the webpack configuration in the form of operation objects
###7. Load external CDN.
By default, all third-party packages of dependencies will be packaged into the js/chunk-vendors.******.js file, which causes the js file to be too large,
so we can pass externals excludes these packages so that they are not packaged in the js/chunk-vendors.******.js file
module.exports = {
chainWebpack:config=>{
//发布模式
config.when(process.env.NODE_ENV === 'production',config=>{
//entry找到默认的打包入口，调用clear则是删除默认的打包入口
//add添加新的打包入口
config.entry('app').clear().add('./src/main-prod.js')
//使用externals设置排除项
config.set('externals',{
vue:'Vue',
'vue-router':'VueRouter',
axios:'axios',
lodash:'_',
echarts:'echarts',
nprogress:'NProgress',
'vue-quill-editor':'VueQuillEditor'
})
})
//开发模式
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
})
}
}
After setting the exclusion, in order to enable us to use vue, axios and other content, we need to load an external CDN to solve the introduction of dependencies.
Open the development entry file main-prod.js and delete the default import code
import Vue from 'vue'
import App from './App.vue'
import router from './router'
// import './plugins/element.js'
//导入字体图标
import './assets/fonts/iconfont.css'
//导入全局样式
import './assets/css/global.css'
//导入第三方组件vue-table-with-tree-grid
import TreeTable from 'vue-table-with-tree-grid'
//导入进度条插件
import NProgress from 'nprogress'
//导入进度条样式
// import 'nprogress/nprogress.css'
// //导入axios
import axios from 'axios'
// //导入vue-quill-editor（富文本编辑器）
import VueQuillEditor from 'vue-quill-editor'
// //导入vue-quill-editor的样式
// import 'quill/dist/quill.core.css'
// import 'quill/dist/quill.snow.css'
// import 'quill/dist/quill.bubble.css'
axios.defaults.baseURL = 'http://127.0.0.1:8888/api/private/v1/'
//请求在到达服务器之前，先会调用use中的这个回调函数来添加请求头信息
axios.interceptors.request.use(config => {
//当进入request拦截器，表示发送了请求，我们就开启进度条
NProgress.start()
//为请求头对象，添加token验证的Authorization字段
config.headers.Authorization = window.sessionStorage.getItem("token")
//必须返回config
return config
})
//在response拦截器中，隐藏进度条
axios.interceptors.response.use(config =>{
//当进入response拦截器，表示请求已经结束，我们就结束进度条
NProgress.done()
return config
})
Vue.prototype.$http = axios
Vue.config.productionTip = false
//全局注册组件
Vue.component('tree-table', TreeTable)
//全局注册富文本组件
Vue.use(VueQuillEditor)
//创建过滤器将秒数过滤为年月日，时分秒
Vue.filter('dateFormat',function(originVal){
const dt = new Date(originVal)
const y = dt.getFullYear()
const m = (dt.getMonth()+1+'').padStart(2,'0')
const d = (dt.getDate()+'').padStart(2,'0')
const hh = (dt.getHours()+'').padStart(2,'0')
const mm = (dt.getMinutes()+'').padStart(2,'0')
const ss = (dt.getSeconds()+'').padStart(2,'0')
return `${y}-${m}-${d} ${hh}:${mm}:${ss}`
})
new Vue({
router,
render: h => h(App)
}).$mount('#app')
Then open public/index.html to add external cdn import code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title>电商后台管理系统</title>
<!-- nprogress 的样式表文件 -->
<link rel="stylesheet" href="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.css" />
<!-- 富文本编辑器 的样式表文件 -->
<link rel="stylesheet" href="https://cdn.staticfile.org/quill/1.3.4/quill.core.min.css" />
<link rel="stylesheet" href="https://cdn.staticfile.org/quill/1.3.4/quill.snow.min.css" />
<link rel="stylesheet" href="https://cdn.staticfile.org/quill/1.3.4/quill.bubble.min.css" />
<!-- element-ui 的样式表文件 -->
<link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.8.2/theme-chalk/index.css" />
<script src="https://cdn.staticfile.org/vue/2.5.22/vue.min.js"></script>
<script src="https://cdn.staticfile.org/vue-router/3.0.1/vue-router.min.js"></script>
<script src="https://cdn.staticfile.org/axios/0.18.0/axios.min.js"></script>
<script src="https://cdn.staticfile.org/lodash.js/4.17.11/lodash.min.js"></script>
<script src="https://cdn.staticfile.org/echarts/4.1.0/echarts.min.js"></script>
<script src="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.js"></script>
<!-- 富文本编辑器的 js 文件 -->
<script src="https://cdn.staticfile.org/quill/1.3.4/quill.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue-quill-editor.js"></script>
<!-- element-ui 的 js 文件 -->
<script src="https://cdn.staticfile.org/element-ui/2.8.2/index.js"></script>
</head>
<body>
<noscript>
<strong>We're sorry but vue_shop doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
</noscript>
<div id="app"></div>
<!-- built files will be auto injected -->
</body>
</html>
###8. Customize homepage content
The form of display content on the homepage of the development environment and the homepage of the publishing environment is different. For
example, import is used to load third-party packages in the development environment, and CDN is used in the publishing environment, so the homepage also needs to be based on Different environments for different implementations
We can customize the content of the homepage through plug-ins, open vue.config.js, and write the code as follows:
module.exports = {
chainWebpack:config=>{
config.when(process.env.NODE_ENV === 'production',config=>{
......
//使用插件
config.plugin('html').tap(args=>{
//添加参数isProd
args[0].isProd = true
return args
})
})
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
//使用插件
config.plugin('html').tap(args=>{
//添加参数isProd
args[0].isProd = false
return args
})
})
}
}
Then use the plug-in in public/index.html to determine whether it is a publishing environment and customize the content of the homepage
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title><%= htmlWebpackPlugin.options.isProd ? '' : 'dev - ' %>电商后台管理系统</title>
<% if(htmlWebpackPlugin.options.isProd){ %>
<!-- nprogress 的样式表文件 -->
<link rel="stylesheet" href="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.css" />
........
<!-- element-ui 的 js 文件 -->
<script src="https://cdn.staticfile.org/element-ui/2.8.2/index.js"></script>
<% } %>
</head>
.......
###9. Routing lazy loading
When the routing is accessed, the corresponding routing file is loaded, which is the routing lazy loading.
Lazy routing implementation steps:
1. Install @babel/plugin-syntax-dynamic-import to
open the vue console, click Dependency -> Install Dependency -> Development Dependency -> Search @babel/plugin-syntax-dynamic-import and
click Install.
2. Declare the plug-in in babel.config.js and open babel.config.js
//项目发布阶段需要用到的babel插件
const productPlugins = []
//判断是开发还是发布阶段
if(process.env.NODE_ENV === 'production'){
//发布阶段
productPlugins.push("transform-remove-console")
}
module.exports = {
"presets": [
"@vue/app"
],
"plugins": [
[
"component",
{
"libraryName": "element-ui",
"styleLibraryName": "theme-chalk"
}
],
...productPlugins,
//配置路由懒加载插件
"@babel/plugin-syntax-dynamic-import"
]
}
3. Change the routing to load on demand, open router.js, and change the imported component code as follows:
import Vue from 'vue'
import Router from 'vue-router'
const Login = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Login.vue')
// import Login from './components/Login.vue'
const Home = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Home.vue')
// import Home from './components/Home.vue'
const Welcome = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Welcome.vue')
// import Welcome from './components/Welcome.vue'
const Users = () => import(/* webpackChunkName:"user" */ './components/user/Users.vue')
// import Users from './components/user/Users.vue'
const Rights = () => import(/* webpackChunkName:"power" */ './components/power/Rights.vue')
// import Rights from './components/power/Rights.vue'
const Roles = () => import(/* webpackChunkName:"power" */ './components/power/Roles.vue')
// import Roles from './components/power/Roles.vue'
const Cate = () => import(/* webpackChunkName:"goods" */ './components/goods/Cate.vue')
// import Cate from './components/goods/Cate.vue'
const Params = () => import(/* webpackChunkName:"goods" */ './components/goods/Params.vue')
// import Params from './components/goods/Params.vue'
const GoodList = () => import(/* webpackChunkName:"goods" */ './components/goods/List.vue')
// import GoodList from './components/goods/List.vue'
const GoodAdd = () => import(/* webpackChunkName:"goods" */ './components/goods/Add.vue')
// import GoodAdd from './components/goods/Add.vue'
const Order = () => import(/* webpackChunkName:"order" */ './components/order/Order.vue')
// import Order from './components/order/Order.vue'
const Report = () => import(/* webpackChunkName:"report" */ './components/report/Report.vue')
// import Report from './components/report/Report.vue'
###10.项上线
####A. Create a server through node Create
a folder vue_shop_server at the same level of vue_shop to store the node server
Use a terminal to open the vue_shop_server folder, enter the command npm init -y to
initialize the package, enter the command npm i
Open the vue_shop directory with express -S , copy the dist folder, and paste it into vue_shop_server
. Create the app.js file in the vue_shop_server folder and write the code as follows:
const express = require('express')
const app = express()
app.use(express.static('./dist'))
app.listen(8998,()=>{
console.log("server running at http://127.0.0.1:8998")
})
Then enter node app.js in the terminal again
####B. Open gzip compression
Open the terminal of the vue_shop_server folder, enter the command: npm i compression -D
open app.js, write the code:
const express = require('express')
const compression = require('compression')
const app = express()
app.use(compression())
app.use(express.static('./dist'))
app.listen(8998,()=>{
console.log("server running at http://127.0.0.1:8998")
})
####C. Configure the https service The
configuration of the https service is generally processed in the background, and the front-end developers can understand it.
First, you need to apply for an SSL certificate, enter https://freessl.cn official website,
import the certificate in the background, open today's information/material, copy the two files in the material to vue_shop_server,
open the app.js file, write the code to import the certificate, and open https service
const express = require('express')
const compression = require('compression')
const https = require('https')
const fs = require('fs')
const app = express()
//创建配置对象设置公钥和私钥
const options = {
cert:fs.readFileSync('./full_chain.pem'),
key:fs.readFileSync('./private.key')
}
app.use(compression())
app.use(express.static('./dist'))
// app.listen(8998,()=>{
// console.log("server running at http://127.0.0.1:8998")
// })
//启动https服务
https.createServer(options,app).listen(443)
Note: The https service cannot be used normally because of the problem with the certificate we are using
####D. Use pm2 to manage applications
Open the terminal of the vue_shop_server folder and enter the command: npm i pm2 -g
Use pm2 to start the project, enter the command in the terminal: pm2 start app.js --name Custom name to
view the project list Command: pm2 ls
Restart project: pm2 restart Custom name
Stop project: pm2 stop Custom name
Delete project: pm2 delete Custom name