Node.js实现简单管理系统

const express = require('express')
const app = express()
app.get('/',(req,res) => {
 res.send('hello world')
})
app.listen(3000,() => {
 console.log('server is running...')
})

app.engine('html',require('express-art-template'))

const express = require('express')
//创建路由实例
const router = express.Router()

router.get('/',(req,res) => {
 res.render('index.html',{
 books: [{ //可以先传一个假数据测试下
 name: 'a',
 author: 'aa',
 press: 'aaa'
 }]
 })
})
module.exports = router //暴露router

const router = require('./router')
app.use(router)

<div>
 <table>
 <thead>
 <tr>
 <th>书名</th>
 <th>作者</th>
 <th>出版社</th>
 <th>操作</th>
 </tr>
 </thead>
 <tbody>
 {{ each books }}
 <tr>
 <td>{{ $value.name }}</td>
 <td>{{ $value.author }}</td>
 <td>{{ $value.press }}</td>
 <td> <!--这里路由后面再添加-->
 <a href="#" >编辑</a>
 <a href="#" >删除</a>
 </td>
 </tr>
 {{ /each }}
 </tbody>
 </table>
 <a href="/new" >添加新书</a> <!--跳转至添加页-->
</div>

const mongoose = require('mongoose')

mongoose.connect('mongodb://localhost/book',{ useNewUrlParser: true , useUnifiedTopology: true })

const Schema = mongoose.Schema

const BookSchema = new Schema({
 name: {
 type: String,
 },
 author: {
 type: String,
 },
 press: {
 type: String,
 }
})
module.exports = mongoose.model('Book',BookSchema)

router.get('/',(req,res) => {
 Book.find((err,book) => { //book就是查找的所有对象是一个数组
 res.render('index.html',{
 books: book
 })
 })
})

<form action="/new" method="post">
 <div >
 <label for="">书名</label>
 <input type="text" name="name" >
 </div>
 <div >
 <label for="">作者</label>
 <input type="text" name="author" >
 </div>
 <div >
 <label for="">出版社</label>
 <input type="text" name="press" >
 </div>
 <button type="submit">Submit</button>
</form>

app.use(bodyParser.urlencoded({ extended: false }))
app.use(bodyParser.json())

router.post('/new',(req,res) => {
 console.log(req.body);
 new Book(req.body).save().then(() => {
 res.redirect('/')
 }) 
})