express基本用法
原创
搭建服务
const express = require('express')
const app = express()
app.listen(8080, () => {
console.log('port created successfully')
})express会把所有的请求方式都作为方法挂载到app对象中，客户端发送请求并且会执行对应的回调函数
const express = require('express')
const app = express()
app.get('/', (req, res, next) => {
res.send("ok")
})
app.listen(8080, () => {
console.log('port created successfully')
})接收GET数据
const express = require('express')
const app = express()
app.get('/', (req, res, next) => {
let GET = req.query
console.log(GET)
res.send("ok")
})
app.listen(8080, () => {
console.log('port created successfully')
})接收POST数据
const bodyParser = require(body-parser)
const express = require('express')
const app = express()
app.use(bodyParser.urlencoded({ extended: false }))
app.get('/', (req, res, next) => {
let POST = req.body
console.log(POST)
res.send("ok")
})
app.listen(8080, () => {
console.log('port created successfully')
})处理session
const cookieSession = require('cookie-session')
const express = require('express')
const app = express()
app.use(cookieSession({
name: 'session',
keys: ['key1', 'key2']
}))
app.get('/', function (req, res, next) {
req.session.views = 1
res.send("ok")
})
app.listen(3000)路由处理
//https://xxx.com/user/1.html
//https://xxx.com/user/2.html
const routerUser = express.Router()
app.use("/user", routerUser)
routerUser.get("/1.html", function (req, res) {
res.send("1")
})
routerUser.get("/2.html", function (req, res) {
res.send("2")
})模板适配
const consolidate = require('consolidate')
app.set("view engine", "html");
app.set("view", "./template");
app.engine("html", consolidate.ejs)
app.get('/', function () {
res.render("index.ejs", {})
})处理文件
app.use(express.static('./dist'))处理404
app.use((req, res, next) => {
res.sendFile(path.resolve(__dirname, './404.html'))
})原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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