小程序服务器端开发教程

const express = require('express');
const app = express();
const port = 3000;

app.get('/api/data', (req, res) => {
  res.json({ message: 'Hello from server!' });
});

app.listen(port, () => {
  console.log(`Server running at http://localhost:${port}`);
});

const jwt = require('jsonwebtoken');

app.post('/login', (req, res) => {
  const user = { id: 1, username: 'example' };
  const token = jwt.sign(user, 'secret_key');
  res.json({ token });
});

app.get('/protected', verifyToken, (req, res) => {
  jwt.verify(req.token, 'secret_key', (err, authData) => {
    if (err) {
      res.sendStatus(403);
    } else {
      res.json({ message: 'Protected data!' });
    }
  });
});

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);
  }
}