React路由问题重定向

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

const Home = () => <h1>Home Page</h1>;
const About = () => <h1>About Page</h1>;
const NotFound = () => <h1>404 Not Found</h1>;

const App = () => {
  return (
    <Router>
      <Switch>
        <Route exact path="/" render={() => <Redirect to="/home" />} />
        <Route path="/home" component={Home} />
        <Route path="/about" component={About} />
        <Route component={NotFound} />
      </Switch>
    </Router>
  );
};

export default App;

const App = () => {
  const isLoggedIn = true;

  return (
    <Router>
      <Switch>
        <Route exact path="/" render={() => isLoggedIn ? <Redirect to="/dashboard" /> : <Redirect to="/login" />} />
        <Route path="/dashboard" component={Dashboard} />
        <Route path="/login" component={Login} />
        <Route component={NotFound} />
      </Switch>
    </Router>
  );
};