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Generating access keys using JSON webtoken

2022-04-23 17:15:00 【MiMenge】

Back end 

const {
     response } = require('express');
const express = require('express');
const fs = require('fs');
const jwt = require('jsonwebtoken');

const app = express();

app.use(express.urlencoded({
     extended: false }));
app.use(express.json());

app.use('*', (request, response, next) => {
    
    // //  Gets the of the header token
    // let token = request.headers.authorization;
    // //  check token
    // jwt.verify(token, 'MiMenge001018', (err, data) => {
    

    // if (err && err.message === 'invalid token') {
    
    // return response.json({ message: ' Invalid  token', code: 0 });
    // } else if (err && err.message === 'jwt expired') {
    
    // return response.json({ message: ' invalid  token', code: 0 })
    // }
    // });

    next();
});


app.get('/', (request, response) => {
    
    fs.readFile('./public/index.html', (err, data) => {
    
        if (err) {
    
            response.json({
     message: ' Page resource not found ', code: 0 });
        } else {
    
            response.send(data.toString());
        }
    });
});

app.get('/demo', (request, response) => {
    
    fs.readFile('./public/demo.html', (err, data) => {
    
        if (err) {
    
            response.json({
     message: ' Page resource not found ', code: 0 });
        } else {
    
            response.send(data.toString());
        }
    });
});

app.post('/login', (request, response) => {
    

    let {
     uname, password } = request.body;


    if (uname === 'Tom' && password === '1234') {
    
        let token = jwt.sign({
    
            uname: 'MiMenge',
            iSRoot: true
        }, 'MiMenge001018', {
    
            expiresIn: 60
        });

        response.json({
     message: 'OK', code: 0, token, });
    }
});

app.post('/data', (request, response) => {
    

    let token = request.headers.authorization;

    jwt.verify(token, 'MiMenge001018', (err, data) => {
    
        if (err) {
    
            if (err.message === 'invalid token') {
    
                return response.json({
     message: ' Invalid  token', code: 0 });
            } else {
    
                return response.json({
     message: ' invalid  token', code: 0 })
            }
        } else {
    
            response.json({
     message: ' success ', code: 1 });
        }
    })
});

app.listen(3300, err => {
    
    if (err) {
    
        console.error(err);
        return;
    }
    console.log('success');
});

front end 

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <a href=""> obtain </a>

    <script> let a = document.querySelector('a'); a.addEventListener('click', (e) => {
       e.preventDefault(); let token = localStorage.getItem('token'); let headers = new Headers({
       'Authorization': token }); fetch('http://localhost:3300/data', {
       method: 'post', headers }).then(data => data.text()).then(value => console.log(value)); // //  Create request object  // let xml = new XMLHttpRequest(); // //  Initialization request  // xml.open('post', 'http://localhost:3300/data', true); // //  Set request header  // xml.setRequestHeader('Content-Type', 'application/json;charset=utf8'); // // console.log(JSON.stringify(new AddO(uname, pwd))); // //  Send request data  // xml.send(JSON.stringify({ 'token': token })); // //  Set request delay  // xml.timeout = 3000; // xml.addEventListener('timeout', () => {
       // xml.abort(); // }); // xml.addEventListener('error', () => {
       // alert(' Wrong request ') // }); // xml.addEventListener('readystatechange', () => {
       // if (xml.readyState === 4) {
       // if (xml.status >= 200 && xml.status < 300 || xml.status === 304) {
       // console.log(xml.responseText); // // console.log(xml.responseURL); // // console.log(xml.status); // // console.log(xml.statusText); // } // } // }); }); </script>
</body>

</html>

版权声明
本文为[MiMenge]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/04/202204230553027505.html

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