使用nodejs切换到其他页面的问题

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

// 静态文件目录
app.use(express.static('public'));

// 路由规则
app.get('/', (req, res) => {
  res.sendFile(__dirname + '/public/index.html');
});

app.get('/about', (req, res) => {
  res.sendFile(__dirname + '/public/about.html');
});

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

import React from 'react';
import { BrowserRouter as Router, Route, Link } from 'react-router-dom';

const App = () => {
  return (
    <Router>
      <div>
        <nav>
          <ul>
            <li>
              <Link to="/">Home</Link>
            </li>
            <li>
              <Link to="/about">About</Link>
            </li>
          </ul>
        </nav>

        <Route path="/" exact component={Home} />
        <Route path="/about" component={About} />
      </div>
    </Router>
  );
};

const Home = () => {
  return <h1>Home Page</h1>;
};

const About = () => {
  return <h1>About Page</h1>;
};

export default App;