DEMO：
let express = require('express')
//获取cookie需要用到第三方cookie-parser插件
let cookieParser = require('cookie-parser')
let app = express()
app.use(cookieParser())
app.get('/', (request, response) => {
response.send('ok')
})
app.get('/setcookie', (request, response) => {
//设置会话cookie
response.cookie('demo1', '123')
//设置持久化cookie（30秒过期）
response.cookie('demo2', '456', {maxAge: 1000 * 30})
response.send('ok')
})
app.get('/getcookie', (request, response) => {
//获取cookie
console.log(request.cookies)
response.send('ok')
})
app.get('/delcookie', (request, response) => {
//删除cookie 方法1
response.cookie('demo1', '456', {maxAge: 0})
//调用删除api 方法2
response.clearCookie('demo2')
response.send('ok')
})
app.listen(3000, (err) => {
if (!err) {
console.log('服务器启动成功')
} else {
console.log(err)
}
})
