如何让我的url工作，通过调用我的方法en React？

npm install react-router-dom

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

function App() {
  return (
    <Router>
      {/* 在这里添加你的组件内容 */}
    </Router>
  );
}

function App() {
  return (
    <Router>
      <Route path="/" exact component={Home} />
      <Route path="/about" component={About} />
      <Route path="/contact" component={Contact} />
    </Router>
  );
}

function App() {
  return (
    <Router>
      <nav>
        <ul>
          <li>
            <Link to="/">首页</Link>
          </li>
          <li>
            <Link to="/about">关于</Link>
          </li>
          <li>
            <Link to="/contact">联系我们</Link>
          </li>
        </ul>
      </nav>

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