IndexRoute不适用于"/“

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

ReactDOM.render(
  <Router>
    <Route exact path="/" component={YourComponent} />
  </Router>,
  document.getElementById('root')
);

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

ReactDOM.render(
  <Router>
    <Switch>
      <Route exact path="/" component={YourComponent} />
      <Route path="/other" component={OtherComponent} />
    </Switch>
  </Router>,
  document.getElementById('root')
);