NODE写后端学习

环境：node js  

数据库：mongodb

需要插件：express cors mongoose

npm i express cors mongoose

建议装 nodemon

npm i -g nodemon

代码

const express = require('express')
const mongoose = require('mongoose')
app.use(require('cors')());
app.use(express.json());


const app = express()

// 加参数element-admin moogoose会自动创建数据库
mongoose.connect("mongodb://localhost:27017/elemet-admin", {
    useNewUrlParser: true,
    useFindAndModify: true,
    useCreateIndex: true,
});

const Artical = mongoose.model("Article", new mongoose.Schema({
    title: {
        type: String
    },
    body: {
        type: String
    },
}))

// 首页
app.get('/', async (req, res) => {
    res.send('index')
})

// 新增文章 增加
app.post('/api/articals', async (req, res) => {
    const artical = await Artical.create(req.body)
    res.send(artical)
})

// 文章列表 查询
app.get('/api/articals',async(req,res)=>{
    const articals = await Artical.find()
    res.send(articals)
})

// 删除文章 删除
app.delete('/api/articals/:id',async(req,res)=>{
    await Artical.findByIdAndDelete(req.params.id)
    res.send({
        status:true
    })
})

// 文章详情
app.get('/api/articals/:id', async(req,res)=>{
    const artical = await Artical.findById(req.params.id)
    res.send(artical)
})

// 文章修改
app.put('/api/articals/:id', async(req,res)=>{
    console.log(req.body)
    const artical = await Artical.findByIdAndUpdate(req.params.id,req.body)
    res.send(artical)
})



app.listen(3001, () => {
    console.log('http://localhost:3001/')
})

启动脚本 nodemon server