Cookie基本用法
const express = require('express');
let app = express()
const cookieParser = require("cookie-parser")
app.use(cookieParser())
// 设置 res.cookie(k,v,过期时间)
// 过期时间过期时间有两种{maxAge:时间段} {expires:时间点}
// 获取
let date = new Date("2021-1-8 9:54:00")
app.get("/", (req, res) => {
console.log(req.cookies);
// res.cookie("name","zs",{maxAge:1000*10})
// res.cookie("name","zs",{expires:date})
res.end("ok")
})
app.listen(3000, () => {
console.log("3000ok");
})
Cookie模拟登录
login.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>
<form action="/login" method="post">
账号：<input type="text" placeholder="请输入账号" name="username"><br>
密码：<input type="password" placeholder="请输入密码" name="password"><br>
<input type="submit">
</form>
</body>
</html>
login_cookie.js
const express = require('express');
const path = require('path');
let app = express()
const cookieParse = require('cookie-parser');
// 利用中间件
app.use(cookieParse())
app.use(express.urlencoded({ extended: true }))
// 存储username和password
app.get("/", (req, res) => {
if (req.cookies.username && req.cookies.password) {
res.send("Login successfully, this is index page");
} else {
res.send("You have not logged in, go to <a href = '/login'>login</a>");
}
})
// 跳转login页面
app.get("/login", (req, res) => {
let filepath = path.join(__dirname, "./login.html");
res.sendFile(filepath)
})
// form submit
app.post("/login", (req, res) => {
if (req.body.username && req.body.password) {
res.cookie("username", req.body.username)
res.cookie("password", req.body.password)
res.send("login successfully, go to <a href = '/'>index</a>")
} else {
res.send('Please confirm you have entered username and password, go to <a href = "/login">login</a>')
}
})
app.listen(3000, ()=>{
console.log(`Port 3000 is listening...`)
})
Session基本用法
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