API 认证活动

const express = require('express');
const jwt = require('jsonwebtoken');
const app = express();

const SECRET_KEY = 'your_secret_key';

app.use(express.json());

// 登录接口，生成JWT令牌
app.post('/login', (req, res) => {
  const { username, password } = req.body;
  // 验证用户名和密码（此处省略具体逻辑）
  if (username === 'admin' && password === 'password') {
    const token = jwt.sign({ username }, SECRET_KEY, { expiresIn: '1h' });
    res.json({ token });
  } else {
    res.status(401).json({ message: 'Invalid credentials' });
  }
});

// 受保护的资源接口
app.get('/protected', verifyToken, (req, res) => {
  jwt.verify(req.token, SECRET_KEY, (err, authData) => {
    if (err) {
      res.sendStatus(403);
    } else {
      res.json({ message: 'Protected resource accessed', authData });
    }
  });
});

// 中间件：验证JWT令牌
function verifyToken(req, res, next) {
  const bearerHeader = req.headers['authorization'];
  if (typeof bearerHeader !== 'undefined') {
    const bearerToken = bearerHeader.split(' ')[1];
    req.token = bearerToken;
    next();
  } else {
    res.sendStatus(403);
  }
}

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});