React 路由报错 You should not use or withRouter() outside a

App.js在中的代码

import React, {Component , Fragment} from 'react';
import {withRouter , Route , Switch , Redirect} from 'react-router-dom';
import './App.css';
import 'antd/dist/antd.css'
import Home from './component/Home';
import List from './component/List';
@withRouter
class App extends Component {
    render() {
        return (
            <Fragment>
                <Switch>
                    <Route path='/homePage' component={Home}></Route>
                    <Route path='/listPage' component={List}></Route>
                    <Redirect to={`/homePage`}/>
                </Switch>
            </Fragment>

        );
    }
}
export default App;

运行项目报错：

←→1 of 2 errors on the page
You should not use  or withRouter() outside a 
▶ 26 stack frames were collapsed.
./src/index.js
C:/Users/abcd/WebstormProjects/ant-table-demo/src/index.js:7
   4 | import App from './App';
   5 | import registerServiceWorker from './registerServiceWorker';
   6 | 
>  7 | ReactDOM.render(, document.getElementById('root'));
   8 | registerServiceWorker();
   9 | 
  10 | 
View compiled
▶ 6 stack frames were collapsed.
This screen is visible only in development. It will not appear if the app crashes in production.
Open your browser’s developer console to further inspect this error.

解决办法

用Route包装App组件，具体如下：

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import {BrowserRouter, Route} from 'react-router-dom'

const Root = () => {
    return (
        <BrowserRouter basename='/'>
            <Route path={`/`} component={App}></Route>
        </BrowserRouter>
    )

}

ReactDOM.render(<Root/>, document.getElementById('root'));

然后就可以正确运行啦~~