如何在单击时引用导航栏中的组件

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

const Navbar = () => {
  const [activeComponent, setActiveComponent] = useState(null);

  const handleItemClick = (component) => {
    setActiveComponent(component);
  };

  return (
    <Router>
      <nav>
        <ul>
          <li>
            <Link to="/" onClick={() => handleItemClick('Home')}>
              Home
            </Link>
          </li>
          <li>
            <Link to="/about" onClick={() => handleItemClick('About')}>
              About
            </Link>
          </li>
          <li>
            <Link to="/contact" onClick={() => handleItemClick('Contact')}>
              Contact
            </Link>
          </li>
        </ul>
      </nav>

      <Switch>
        <Route exact path="/">
          {activeComponent === 'Home' && <Home />}
        </Route>
        <Route path="/about">
          {activeComponent === 'About' && <About />}
        </Route>
        <Route path="/contact">
          {activeComponent === 'Contact' && <Contact />}
        </Route>
      </Switch>
    </Router>
  );
};

const Home = () => <h1>Home Component</h1>;
const About = () => <h1>About Component</h1>;
const Contact = () => <h1>Contact Component</h1>;

export default Navbar;