jwt code example in node js
Example 1: jwt implementation in node js
const jwt = require("jsonwebtoken")
const jwtKey = "my_secret_key"
const jwtExpirySeconds = 300
const users = {
user1: "password1",
user2: "password2",
}
const signIn = (req, res) => {
// Get credentials from JSON body
const { username, password } = req.body
if (!username || !password || users[username] !== password) {
// return 401 error is username or password doesn't exist, or if password does
// not match the password in our records
return res.status(401).end()
}
// Create a new token with the username in the payload
// and which expires 300 seconds after issue
const token = jwt.sign({ username }, jwtKey, {
algorithm: "HS256",
expiresIn: jwtExpirySeconds,
})
console.log("token:", token)
// set the cookie as the token string, with a similar max age as the token
// here, the max age is in milliseconds, so we multiply by 1000
res.cookie("token", token, { maxAge: jwtExpirySeconds * 1000 })
res.end()
}
Example 2: jwt token example in node js
function authenticateToken(req, res, next) {
// Gather the jwt access token from the request header
const authHeader = req.headers['authorization']
const token = authHeader && authHeader.split(' ')[1]
if (token == null) return res.sendStatus(401) // if there isn't any token
jwt.verify(token, process.env.ACCESS_TOKEN_SECRET as string, (err: any, user: any) => {
console.log(err)
if (err) return res.sendStatus(403)
req.user = user
next() // pass the execution off to whatever request the client intended
})
}