npm install express@next mongoose cors --save
const express = require('express')
const app = express()
// 跨域
app.use(require('cors')())
// 靜態文件託管
app.use('/', express.static('public')
// 開啓json解析
app.use(express.json())
// 連接數據庫
const mongoose = require('mongoose')
mongoose.connect('mongodb://localhost:27017/product', {useNewUrlParser: true})
// 建立模型
const Product = mongoose.model('Product', new mongoose.Schema({
title: String,
}))
// 接口
// 列表
app.get('/produts', async (req, res) => {
const data = await Product.find()
res.send(data)
})
// 詳情
app.get('/products/:id' async (req, res) => {
const data = await Product.findById(req.params.id)
res.send(data)
})
// 新增
app.post('/products', async (req, res) => {
const data = req.body
const product = await Product.create(data)
res.send(product)
})
// 修改
app.put('/products/:id', async (req, res) => {
const product = await Product.findById(req.params.id)
product.title = req.body.title
await product.save()
res.send(product)
})
// 刪除
app.delete('/products/:id', async (req, res) => {
const product = await Product.findById(req.params.id)
await product.remove()
res.send({
success: true
})
})
// 監聽端口
app.listen('3000', () => {
console.log('http://localhost:3000/')
})
public > index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>Main Page</h1>
<a href="http://localhost:3000/products">products</a>
<script>
fetch('http://localhost:3000/products').then(res => res.json()).then(data => {
console.log(data)
})
</script>
</body>
</html>