使用链接测试子组件：“在路由器上下文之外呈现的<Link>s无法导航。”

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

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

const Home = () => (
  <div>
    <h2>Home</h2>
    <Link to="/about">About</Link>
    <Link to="/contact">Contact</Link>
  </div>
);

const About = () => (
  <div>
    <h2>About</h2>
    <Link to="/">Home</Link>
    <Link to="/contact">Contact</Link>
  </div>
);

const Contact = () => (
  <div>
    <h2>Contact</h2>
    <Link to="/">Home</Link>
    <Link to="/about">About</Link>
  </div>
);

export default App;