多域名绑定多用户商城

const express = require('express');
const app = express();
const http = require('http').createServer(app);

// 配置多个域名
const domains = {
  'user1.com': { path: '/user1', port: 3001 },
  'user2.com': { path: '/user2', port: 3002 }
};

// 路由处理
app.use((req, res, next) => {
  const host = req.headers.host;
  const domain = Object.keys(domains).find(d => host.includes(d));
  if (domain) {
    const { path, port } = domains[domain];
    req.url = path + req.url;
    http.listen(port, () => {
      console.log(`Server running at http://${domain}:${port}/`);
    });
  } else {
    res.status(404).send('Not Found');
  }
});

app.get('/', (req, res) => {
  res.send('Hello World!');
});

http.listen(3000, () => {
  console.log('Server running at http://localhost:3000/');
});