1.安装 nodejs
2.安装 git
<meta charset="utf-8">
建议
本项目的定位是后台集成方案，不太适合当基础模板来进行二次开发。因为本项目集成了很多你可能用不到的功能，会造成不少的代码冗余。如果你的项目不关注这方面的问题，也可以直接基于它进行二次开发。
集成方案:vue-element-admin
基础模板:vue-admin-template
桌面终端:electron-vue-admin
Typescript 版:vue-typescript-admin-template(鸣谢:@Armour)
Others:awesome-project
先安装好环境
# clone the project
git clone https://github.com/PanJiaChen/vue-admin-template.git
# enter the project directory
cd vue-admin-template
# install dependency
npm install
# develop
npm run dev
效果截图
image.png
启动成功
删除多余界面 router/index
删除后的界面如下
importVuefrom'vue'importRouterfrom'vue-router'Vue.use(Router)/* Layout */importLayoutfrom'@/layout'/**
* Note: sub-menu only appear when route children.length >= 1
* Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
*
* hidden: true if set true, item will not show in the sidebar(default is false)
* alwaysShow: true if set true, will always show the root menu
* if not set alwaysShow, when item has more than one children route,
* it will becomes nested mode, otherwise not show the root menu
* redirect: noRedirect if set noRedirect will no redirect in the breadcrumb
* name:'router-name' the name is used by <keep-alive> (must set!!!)
* meta : {
roles: ['admin','editor'] control the page roles (you can set multiple roles)
title: 'title' the name show in sidebar and breadcrumb (recommend set)
icon: 'svg-name' the icon show in the sidebar
breadcrumb: false if set false, the item will hidden in breadcrumb(default is true)
activeMenu: '/example/list' if set path, the sidebar will highlight the path you set
}
*//**
* constantRoutes
* a base page that does not have permission requirements
* all roles can be accessed
*/exportconstconstantRoutes=[{path:'/login',component:()=>import('@/views/login/index'),hidden:true},{path:'/404',component:()=>import('@/views/404'),hidden:true},{path:'/',component:Layout,redirect:'/dashboard',children:[{path:'dashboard',name:'Dashboard',component:()=>import('@/views/dashboard/index'),meta:{title:'Dashboard',icon:'dashboard'}}]},// 404 page must be placed at the end !!!{path:'*',redirect:'/404',hidden:true}]constcreateRouter=()=>newRouter({// mode: 'history', // require service supportscrollBehavior:()=>({y:0}),routes:constantRoutes})constrouter=createRouter()// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465exportfunctionresetRouter(){constnewRouter=createRouter()router.matcher=newRouter.matcher// reset router}exportdefaultrouter
安装ES6语法插件
npm install --save es6-promise
使用老师写的的Axios 插件
image.png
http.js存放位置
http.js ↓
importVuefrom'vue';importAxiosfrom'axios';import{Promise}from'es6-promise';import{MessageBox,Message}from'element-ui'Axios.defaults.timeout=30000;// 1分钟Axios.defaults.baseURL='';Axios.interceptors.request.use(function(config){// Do something before request is sent//change method for get/*if(process.env.NODE_ENV == 'development'){
config['method'] = 'GET';
console.log(config)
}*/if(config['MSG']){// Vue.prototype.$showLoading(config['MSG']);}else{// Vue.prototype.$showLoading();}// if(user.state.token){//用户登录时每次请求将token放入请求头中// config.headers["token"] = user.state.token;// }if(config['Content-Type']==='application/x-www-form-urlencoded;'){//默认发application/json请求，如果application/x-www-form-urlencoded;需要使用transformRequest对参数进行处理/*config['Content-Type'] = 'application/x-www-form-urlencoded;charset=UTF-8';*/config.headers['Content-Type']='application/x-www-form-urlencoded;charset=UTF-8';config['transformRequest']=function(obj){varstr=[];for(varpinobj)str.push(encodeURIComponent(p)+"="+encodeURIComponent(obj[p]));returnstr.join("&")};}//config.header['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';returnconfig;},function(error){// Do something with request error// Vue.$vux.loading.hide()returnPromise.reject(error);});Axios.interceptors.response.use(response=>{// Vue.$vux.loading.hide();returnresponse.data;},error=>{// Vue.$vux.loading.hide();if(error.response){switch(error.response.status){case404:Message({message:''||'Error',type:'error',duration:5*1000})break;default:Message({message:''||'Error',type:'error',duration:5*1000})}}elseif(errorinstanceofError){console.error(error);}else{Message({message:''||'Error',type:'error',duration:5*1000})}returnPromise.reject(error.response);});exportdefaultVue.prototype.$http=Axios;
配置axios代理：
image.png
'use strict'constpath=require('path')constdefaultSettings=require('./src/settings.js')functionresolve(dir){returnpath.join(__dirname,dir)}constname=defaultSettings.title||'vue Admin Template'// page title// If your port is set to 80,// use administrator privileges to execute the command line.// For example, Mac: sudo npm run// You can change the port by the following methods:// port = 9528 npm run dev OR npm run dev --port = 9528constport=process.env.port||process.env.npm_config_port||9528// dev port// All configuration item explanations can be find in https://cli.vuejs.org/config/module.exports={/**
* You will need to set publicPath if you plan to deploy your site under a sub path,
* for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
* then publicPath should be set to "/bar/".
* In most cases please use '/' !!!
* Detail: https://cli.vuejs.org/config/#publicpath
*/publicPath:'/',outputDir:'dist',assetsDir:'static',lintOnSave:process.env.NODE_ENV==='development',productionSourceMap:false,devServer:{port:port,open:true,overlay:{warnings:false,errors:true},proxy:{// change xxx-api/login => mock/login// detail: https://cli.vuejs.org/config/#devserver-proxy[process.env.VUE_APP_BASE_API]:{target:`http://127.0.0.1:${port}/mock`,changeOrigin:true,pathRewrite:{['^'+process.env.VUE_APP_BASE_API]:''}},['/api']:{target:`http://127.0.0.1:3000`,changeOrigin:true,pathRewrite:{['^'+'/api']:''}}},after:require('./mock/mock-server.js')},configureWebpack:{// provide the app's title in webpack's name field, so that// it can be accessed in index.html to inject the correct title.name:name,resolve:{alias:{'@':resolve('src')}}},chainWebpack(config){config.plugins.delete('preload')// TODO: need testconfig.plugins.delete('prefetch')// TODO: need test// set svg-sprite-loaderconfig.module.rule('svg').exclude.add(resolve('src/icons')).end()config.module.rule('icons').test(/\.svg$/).include.add(resolve('src/icons')).end().use('svg-sprite-loader').loader('svg-sprite-loader').options({symbolId:'icon-[name]'}).end()// set preserveWhitespaceconfig.module.rule('vue').use('vue-loader').loader('vue-loader').tap(options=>{options.compilerOptions.preserveWhitespace=truereturnoptions}).end()config// https://webpack.js.org/configuration/devtool/#development.when(process.env.NODE_ENV==='development',config=>config.devtool('cheap-source-map'))config.when(process.env.NODE_ENV!=='development',config=>{config.plugin('ScriptExtHtmlWebpackPlugin').after('html').use('script-ext-html-webpack-plugin',[{// `runtime` must same as runtimeChunk name. default is `runtime`inline:/runtime\..*\.js$/}]).end()config.optimization.splitChunks({chunks:'all',cacheGroups:{libs:{name:'chunk-libs',test:/[\\/]node_modules[\\/]/,priority:10,chunks:'initial'// only package third parties that are initially dependent},elementUI:{name:'chunk-elementUI',// split elementUI into a single packagepriority:20,// the weight needs to be larger than libs and app or it will be packaged into libs or apptest:/[\\/]node_modules[\\/]_?element-ui(.*)/// in order to adapt to cnpm},commons:{name:'chunk-commons',test:resolve('src/components'),// can customize your rulesminChunks:3,// minimum common numberpriority:5,reuseExistingChunk:true}}})config.optimization.runtimeChunk('single')})}}
main.js中加入http
importhttpfrom'./utils/http'Vue.use(http)
<meta charset="utf-8">
<article class="_2rhmJa">
image
index.vue ↓
<template><divclass="dashboard-container">欢迎</div></template><script>import { mapGetters } from 'vuex' export default { name: 'Dashboard', computed: { ...mapGetters([ 'name' ]) }, mounted(){ this.$http.get('/api/users/add').then(res => { console.log('this.panels', res) }) } }</script><stylelang="scss"scoped>.dashboard { &-container { margin: 30px; } &-text { font-size: 30px; line-height: 46px; } }</style>
6.全局安装koa-generator,执行下面命令
npm install -g koa-generator
7.构建koa2项目代码如下
koa2 projectName
构建成功信息：
D:\project>koa2 projectName create:projectName create:projectName/package.json create:projectName/app.js create:projectName/publiccreate:projectName/public/images create:projectName/routes create:projectName/routes/index.js create:projectName/routes/users.js create:projectName/views create:projectName/views/index.pug create:projectName/views/layout.pug create:projectName/views/error.pug create:projectName/public/stylesheets create:projectName/public/stylesheets/style.css create:projectName/bin create:projectName/bin/www install dependencies:>cd projectName&&npm install run the app:>SETDEBUG=koa*&npm start projectName create:projectName/public/javascriptsD:\project>
初始化后台项目插件，命令属下:
cd projectName
初始化项目，如果没有安装git会报错.
npm install
项目试运行
npm run dev
这里koa2模板提示信息做的并不好，没有输出测试地址，成功后出现如下界面代表成功了。
D:\project\projectName>npm run dev>projectName@0.1.0dev D:\project\projectName>nodemon bin/www[nodemon]1.19.4[nodemon]to restart at any time,enter `rs`[nodemon]watchingdir(s):*.*[nodemon]watching extensions:js,mjs,json[nodemon]starting `node bin/www`
在浏览器打开地址：
出现koa2的欢迎界面就代表成功了。
8.安装本地mongodb或者在mongodb官网新建免费的云端服务器。
本人在这里用的mongodb免费云端数据库。
抱歉密码不能公开，请自行换成自己的密码
链接如下：
本人数据库名为lhh_data
mongodb+srv://xxwozixin:@cluster0-7d5kk.mongodb.net/test?retryWrites=true&w=majority
安装mongoose
npm install mongoose --save
在第7步建好的nodejs项目中根目录创建db目录
作者用的webstorm,可以根据自己需要下载编辑器
image
下面代码中连接密码需要修改成自己的
config.js ↓
module.exports={// dbs: 'mongodb://139.159.253.110:27017/test1'mongodb+srv://用户名:<password>@cluster0.rfgfj.mongodb.net/库名?retryWrites=true&w=majority}
user.js ↓
constmongoose=require('mongoose')constfeld={name:String,age:Number,//人物标签labels:Number}//自动添加更新时间创建时间:letpersonSchema=newmongoose.Schema(feld,{timestamps:{createdAt:'created',updatedAt:'updated'}})module.exports=mongoose.model('User',personSchema)
修改根目录app.js
constKoa=require('koa')constapp=newKoa()constviews=require('koa-views')constjson=require('koa-json')constonerror=require('koa-onerror')constbodyparser=require('koa-bodyparser')constlogger=require('koa-logger')constindex=require('./routes/index')constusers=require('./routes/users')constmongoose=require('mongoose')constdbconfig=require('./db/config')mongoose.connect(dbconfig.dbs,{useNewUrlParser:true,useUnifiedTopology:true})constdb=mongoose.connectiondb.on('error',console.error.bind(console,'connection error:'));db.once('open',function(){console.log('mongoose 连接成功')});// error handleronerror(app)// middlewaresapp.use(bodyparser({enableTypes:['json','form','text']}))app.use(json())app.use(logger())app.use(require('koa-static')(__dirname+'/public'))app.use(views(__dirname+'/views',{extension:'pug'}))// loggerapp.use(async(ctx,next)=>{conststart=newDate()awaitnext()constms=newDate()-startconsole.log(`${ctx.method} ${ctx.url} - ${ms}ms`)})// routesapp.use(index.routes(),index.allowedMethods())app.use(users.routes(),users.allowedMethods())// error-handlingapp.on('error',(err,ctx)=>{console.error('server error',err,ctx)});module.exports=app// error handleronerror(app)// middlewaresapp.use(bodyparser({enableTypes:['json','form','text']}))app.use(json())app.use(logger())app.use(require('koa-static')(__dirname+'/public'))app.use(views(__dirname+'/views',{extension:'pug'}))// loggerapp.use(async(ctx,next)=>{conststart=newDate()awaitnext()constms=newDate()-startconsole.log(`${ctx.method} ${ctx.url} - ${ms}ms`)})// routesapp.use(index.routes(),index.allowedMethods())app.use(users.routes(),users.allowedMethods())// error-handlingapp.on('error',(err,ctx)=>{console.error('server error',err,ctx)});module.exports=app
user.js ↓
constrouter=require('koa-router')()constUser=require('../db/models/user')router.prefix('/users')router.get('/add',function(ctx,next){ctx.body='this is a users/bar response'})router.get('/',function(ctx,next){ctx.body='this is a users response!'})router.get('/bar',function(ctx,next){ctx.body='this is a users/bar response'})module.exports=router
重启项目
关掉前面我们启动的服务在运行
npm run dev
如下结果代表成功连接数据库
