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;

当前回答

改变

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

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

to

import { BrowserRouter as Router, Routes, Route, Link } from "react-router-dom";

<Routes>
    <Route path="/home" element={ <Home />} />
</Routes>

其他回答

改变

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

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

to

import { BrowserRouter as Router, Routes, Route, Link } from "react-router-dom";

<Routes>
    <Route path="/home" element={ <Home />} />
</Routes>

在react-router-dom v6中,Switch被替换为Routes。 使用以下格式:

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

<Router>
    <Routes>
        <Route exact path="/" component={component} />
        <Route exact path="/path2" component={component2} />
        <Route exact path="/path3" component={component3} />
    </Routes>
</Router>

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;

这实际上不是你或React或你的代码的问题。它只是react-router-dom的更新版本。用路由替换交换机。

就是这样。只要使用路由而不是开关,它工作得很好。

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>
        );
    }
}