Nodejs+express set and get cookies, session

cookie

1. Install dependency packages

yarn add cookie-parser
 perhaps  npm i  cookie-parser

2. Use

// register 
const cookieParser = require('cookie-parser')

app.use(cookieParser())

3. Write the interface

// Set up cookie
app.get("/set_cookie",(req,res) => {
    
  res.cookie('name',"node",{
    maxAge: 60*60*2})
  res.cookie("age",11)
  res.send(" Set up cookie")
})

// obtain cookie
app.get("/get_cookie",(req,res)=>{
    
  let name = req.cookies['name']
  let age = req.cookies["age"]
  res.send({
    
    name: name,
    age:age
  })
})

session cookie-session

session Depend on cookie

1. Install dependency packages

yarn add cookie-session
 perhaps  npm i  cookie-session

2. Use

// register session
const cookieSession = require('cookie-session')

app.use(cookieSession({
    
  name:"my_session", // name 
  keys:["asdaafadsfgdgjsidlyfgulaujhisuhdifgweui"],  // Encrypted field 
  maxAge: 1000 * 60 * 60 *24 *2  // Time of preservation 
}))

3. Write the interface

// Set up session

app.get("/set_session",(req,res)=>{
    
  req.session["name"] = "xinghuo"
  req.session["age"] = 20
  res.send(" Set up session")
})

// obtain session
app.get("/get_session",(req,res)=>{
    
  let name = req.session["name"]
  let age = req.session["age"]
  res.send({
    
    name,
    age
  })
})

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These two methods cannot be used at the same time

---

session express-session

Installation dependency

yarn add express-session
 or  npm i express-session

Use

const expressSession= require("express-session")
app.use(expressSession({
    
  secret:"xinghuo",
  resave:false,
  saveUninitialized:true
}))

Write the interface

// Set up 
router.get("/set_eSession",(req,res) =>{
    
    req.session.user = {
    name:' Zhang San ',age:18}
    res.send(" Set up expressSession")
})
// obtain 
router.get("/get_eSession",(req,res)=>{
    
    const {
    user} = req.session
    res.send(user)
})