1.安装 nodejs
官网下载
npm install –g vue-cli
镜像下载
Npm config set registry https://registry.npm.taobao.org
2.新建文件夹在搜索栏输入cmd
3.输入
vue init webpack my-project
(一直下一步,除第一个yes,其他都no)
4.完成后输入
cd my-project
5.再输入运行
npm run dev
6.自动获得网址
2.安装 git
官网下载安装即可,一切都选择默认。
3.下载 vue-element-admin
1.打开你安装nodejs的文件夹,输入cmd打开命令提示符。输入下面的命令
# 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
加载成功界面,输入网址打开
启动成功界面
2.删除多余界面,用编辑器打开 vue-admin-template/src/router/index
删除后的界面如下
import Vue from 'vue'
import Router from 'vue-router'
Vue.use(Router)
/* Layout */
import Layout from '@/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
*/
export const constantRoutes = [
{
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 }
]
const createRouter = () => new Router({
// mode: 'history', // require service support
scrollBehavior: () => ({ y: 0 }),
routes: constantRoutes
})
const router = createRouter()
// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
const newRouter = createRouter()
router.matcher = newRouter.matcher // reset router
}
export default router
3.安装ES6语法插件
npm install --save es6-promise
4.加入Axios 插件
用编辑器新建一个js文件命名为http
存放在vue-admin-template/src/utils下
http.js代码 ↓
import Vue from 'vue';
import Axios from '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) {
var str = [];
for (var p in obj)
str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
return str.join("&")
};
}
//config.header['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
return config;
}, function (error) {
// Do something with request error
// Vue.$vux.loading.hide()
return Promise.reject(error);
});
Axios.interceptors.response.use(
response => {
// Vue.$vux.loading.hide();
return response.data;
},
error => {
// Vue.$vux.loading.hide();
if (error.response) {
switch (error.response.status) {
case 404:
Message({
message: '' || 'Error',
type: 'error',
duration: 5 * 1000
})
break;
default:
Message({
message: '' || 'Error',
type: 'error',
duration: 5 * 1000
})
}
} else if (error instanceof Error) {
console.error(error);
} else {
Message({
message: '' || 'Error',
type: 'error',
duration: 5 * 1000
})
}
return Promise.reject(error.response);
});
export default Vue.prototype.$http = Axios;
5.配置axios代理:
打开vue-admin-template文件夹找到vue.config.js,向其中加入如下代码
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:${port}/mock`,
changeOrigin: true,
pathRewrite: {
['^' + process.env.VUE_APP_BASE_API]: ''
}
},
['/api']: {
target: `http://127.0.0.1:3000`,
changeOrigin: true,
pathRewrite: {
['^' + '/api']: ''
}
}
},
替换位置为
6.打开vue-admin-template/src/main.js
加入http
import http from './utils/http'
Vue.use(http)
7.调用接口:
打开vue-admin-template\src\views\dashboard下的index
替换为如下代码
index.vue ↓
<template>
<div class="dashboard-container">
欢迎登录校园管理系统:
<div class="dashboard-text">学校:{{schoolCount}}</div>
<div class="dashboard-text">学院:{{academyCount}}</div>
<div class="dashboard-text">班级:{{classsCount}}</div>
<div class="dashboard-text">学生:{{studentCount}}</div>
<div class="dashboard-text">老师:{{teacherCount}}</div>
</div>
</template>
<script>
import { mapGetters } from 'vuex'
export default {
name: 'Dashboard',
computed: {
...mapGetters([
'name'
])
},
data() {
return {
studentCount:'',
schoolCount:'',
teacherCount:'',
academyCount:'',
classsCount:''
}
},
mounted(){
this.$http.post('/api/school/find', this.user).then(res => {
console.log('res:', res)
console.log('res:'.length)
this.schoolCount = res.length
})
this.$http.post('/api/student/find', this.user).then(res => {
console.log('res:', res)
console.log('res:'.length)
this.studentCount = res.length
})
this.$http.post('/api/classs/find', this.user).then(res => {
console.log('res:', res)
console.log('res:'.length)
this.classsCount = res.length
})
this.$http.post('/api/teacher/find', this.user).then(res => {
console.log('res:', res)
console.log('res:'.length)
this.teacherCount = res.length
})
this.$http.post('/api/academy/find', this.user).then(res => {
console.log('res:', res)
console.log('res:'.length)
this.academyCount = res.length
})
}
}
</script>
<style lang="scss" scoped>
.dashboard {
&-container {
margin: 30px;
}
&-text {
font-size: 30px;
line-height: 46px;
}
}
</style>
8.打开命令提示符:
全局安装koa-generator,执行下面命令
npm install -g koa-generator
构建koa2项目代码如下
koa2 projectName
构建成功界面
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工具会报错.
npm install
项目试运行
npm run dev
界面成功
在浏览器打开地址:
http://localhost:3000/
出现koa2的欢迎界面就代表成功
4. 安装本地mongodb或者在mongodb官网新建免费的云端服务器。
云端建立集群步骤
(这里引用熊薪老师的步骤
链接:https://www.jianshu.com/p/e3ce106ede47):
5.本地配置mongodb
打开projectName输入cmd打开命令提示符
安装mongoose
npm install mongoose-save
在projectName中创建db目录,db下创建models
新建两个JS文件将config.js放入db,user.js 放入models
代码如下:
config.js ↓
module.exports = {
// dbs: 'mongodb://139.159.253.110:27017/test1'
dbs: 'mongodb+srv://xxwozixin:<需要修改>@cluster0-7d5kk.mongodb.net/test?retryWrites=true&w=majority'
}
注意此处要换成自己建立的用户名和数据库名(可去云端查看)
user.js ↓
const mongoose = require('mongoose')
const feld={
name: String,
age: Number,
//人物标签
labels:Number
}
//自动添加更新时间创建时间:
let personSchema = new mongoose.Schema(feld, {timestamps: {createdAt: 'created', updatedAt: 'updated'}})
module.exports= mongoose.model('User',personSchema)
修改projectName下的app.js
const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const index = require('./routes/index')
const users = require('./routes/users')
const mongoose = require('mongoose')
const dbconfig = require('./db/config')
mongoose.connect(dbconfig.dbs, {useNewUrlParser: true,useUnifiedTopology: true})
const db = mongoose.connection
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
console.log('mongoose 连接成功')
});
// error handler
onerror(app)
// middlewares
app.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'
}))
// logger
app.use(async (ctx, next) => {
const start = new Date()
await next()
const ms = new Date() - start
console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})
// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
// error-handling
app.on('error', (err, ctx) => {
console.error('server error', err, ctx)
});
module.exports = app
// error handler
onerror(app)
// middlewares
app.use(bodyparser({
enableTypes:['json', 'form', 'text']
}))
app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))
app.use(views(__dirname + '/views', {
extension: 'pug'
}))
// logger
app.use(async (ctx, next) => {
const start = new Date()
await next()
const ms = new Date() - start
console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})
// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
// error-handling
app.on('error', (err, ctx) => {
console.error('server error', err, ctx)
});
module.exports = app
修改projectName\router下的users.js
users.js ↓
const router = require('koa-router')()
const User = 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
打开projectName输入cmd打开命令提示符
重启项目
注意先关掉前面我们启动的服务再运行
npm run dev
结果成功界面