React-router-dom已更新到版本6。现在他们已经将<Switch/>组件重命名为<Routes/>。也有很多变化。

您应该花些时间阅读文档。下面是react-router-v6-doc的链接。

<Switch>替换为<Routes>

之前:

import { Route, Switch} from 'react-router'

<Router>
    <Switch>
        <Route />
        <Route />
    </Switch>
</Router>

Now:

import { Route, Routes} from 'react-router'

<Router>
    <Routes>
        <Route />
        <Route />
    </Routes>
</Router>

只需使用路由而不是交换机。

在react-router-dom v6中，开关被路由替换。下面是配置react-router-dom v6的简单示例。

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

import Layout from './components/Layout';
import ProtectedRoute from './components/ProtectedRoute';
import LoginPage from './pages/LoginPage';
import WizardPage from './pages/WizardPage';
import RequestsPage from './pages/RequestsPage';

import './App.scss'

export class App extends React.Component {
    public render() {
        const sharedRouteProps = { exact: true, authenticationPath: '/login' };
        const wizardRouteProps = { ...sharedRouteProps, path: "/", component: WizardPage };
        const requestsRouteProps = { ...sharedRouteProps, path: "/requests", component: RequestsPage };

        return (
            <Layout>
              <Router>
                <Switch>
                    <Route exact path='/login' component={LoginPage} />
                    <ProtectedRoute {...wizardRouteProps} />
                    <ProtectedRoute {...requestsRouteProps} />
                </Switch>
              </Router>
            </Layout>
        );
    }
}

如果你正在使用react-router-dom的版本6，那么你需要用路由更新Switch。下面的语法适合我:

import { BrowserRouter as Router, Route, Routes } from "react-router-dom";
import './App.css';
import Home from './components/Home';

function App() {
  return (
    <div>
      <Router>
        <Routes>
          <Route path="/" exact element={<Home />} />
        </Routes>
      </Router>
    </div>
  );
}

export default App;

在react-router-dom v6中，“Switch”被替换为路由“routes”。您需要更新从的导入

import { Switch, Route } from "react-router-dom";

to

import { Routes ,Route } from 'react-router-dom';

您还需要更新Route声明

<Route path="/" component={Home} />

to

<Route path='/' element={<Home/>} />

在react-router-dom中，你也不需要在Route声明中使用exact。

欲了解更多信息，请访问官方文档: 升级到react-router-dom v6

react-router-dom包最近发生了突破性的变化。React Router v6 Changelog永久链接

所以你所需要的就是重命名导入，就像这样…

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

干杯!