我不知道为什么我得到这个错误，我在任何地方都找不到答案。我已经卸载了react-router-dom包并重新安装了它，但它仍然告诉我交换模块没有从react-router-dom导出。这是我的代码。
我得到的错误是:
试图导入错误:“Switch”没有从“react-router-dom”中导出。
Code
import React from 'react';
import './App.css';
import NavBar from './components/navbar.js';
import Footer from './components/footer.js';
import Home from './components/pages/homepage/home.js';
import { BrowserRouter as Router, Switch, Route, Link } from 'react-router-dom';
function App() {
return (
<Router>
<div className="app-container">
<NavBar />
<Switch>
<Route path="/home" component={Home} />
</Switch>
<Footer />
</div>
</Router>
);
}
export default App;
如果你正在使用react-router-dom的版本6，请使用这个
另外，请参考这里:https://reactrouter.com/docs/en/v6/upgrading/v5#:~:text=single%20route%20config%3A-，//%20This%20is%20a%20React%20Router%20v6%20app，%7D，-This%20step%20is
// This is a React Router v6 app
import {
BrowserRouter,
Routes,
Route,
Link,
Outlet
} from "react-router-dom";
function App() {
return (
<BrowserRouter>
<Routes>
<Route path="/" element={<Home />} />
<Route path="users" element={<Users />}>
<Route path="me" element={<OwnUserProfile />} />
<Route path=":id" element={<UserProfile />} />
</Route>
</Routes>
</BrowserRouter>
);
}
function Users() {
return (
<div>
<nav>
<Link to="me">My Profile</Link>
</nav>
<Outlet />
</div>
);
}
export 'Switch'(作为'Switch'导入)在'react-router-dom'中找不到
第一种方法[用路由替换交换机]
import { Routes , Route , Link } from 'react-router-dom';
<Routes>
<Route exact path='/'>
<HomePage />
</Route>
</Routes>
第二种方法[将react-router-dom版本降级至版本5或以下]
npm i react-router-dom@5.0.0
如果你正在使用react-router-dom的版本6，请使用这个
另外，请参考这里:https://reactrouter.com/docs/en/v6/upgrading/v5#:~:text=single%20route%20config%3A-，//%20This%20is%20a%20React%20Router%20v6%20app，%7D，-This%20step%20is
// This is a React Router v6 app
import {
BrowserRouter,
Routes,
Route,
Link,
Outlet
} from "react-router-dom";
function App() {
return (
<BrowserRouter>
<Routes>
<Route path="/" element={<Home />} />
<Route path="users" element={<Users />}>
<Route path="me" element={<OwnUserProfile />} />
<Route path=":id" element={<UserProfile />} />
</Route>
</Routes>
</BrowserRouter>
);
}
function Users() {
return (
<div>
<nav>
<Link to="me">My Profile</Link>
</nav>
<Outlet />
</div>
);
}
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>
);
}
}
