React不能使用useParams值

npm install react-router-dom

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

const App = () => {
  return (
    <Router>
      <Switch>
        <Route path="/users/:id" component={UserDetail} />
      </Switch>
    </Router>
  );
};

import { useParams } from 'react-router-dom';

const UserDetail = () => {
  const { id } = useParams();

  return <div>User ID: {id}</div>;
};