尝试导入错误:“Switch”没有从“react-router-dom”导出

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

我也面临着这个问题，并最终通过安排代码解决了它。我是React的新手。

以下是我的App.js代码(类基组件):

import logo from './logo.svg';
import './App.css';

import React, { Component } from 'react'
import PropTypes from 'prop-types'
import Navbar from './components/Navbar';
import News from './components/News';
import { BrowserRouter as Router, Route, Routes,Link } from 'react-router-dom'

export class App extends Component {
  static propTypes = {

  }

  render() {
    return (
      <>
        <Navbar/>
        <Router>
          <Routes>
            <Route path="/general"><News pageSize={3} country={'us'} category={'general'}/></Route>
          </Routes>
        </Router>
      </>
    )
  }
}

export default App

2021-11-24 18:36:19

其他回答

改变

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

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

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

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

2021-11-09 02:26:08

Switch已被Routes替换。

更新路由(react-router-dom语法)#1386 (howtographql GitHub)

2021-11-17 16:46:08

在react-router-dom v6中，Switch被替换为路由。

还有组件和元素

{componentName}和{}

2022-03-04 09:40:22

这是一个使用react-router-dom V6的例子

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

import '../styles/global.css'

import Layout from '../containers/Layout'
import Home from '../pages/Home'
import Login from '../containers/Login'
import RecoveryPassword from '../containers/RecoveryPassword'
import NotFound from '../pages/NotFound'

const App = () => {
  return (
    <Router>
      <Layout>
        <Routes>
          <Route exact path="/" element={<Home/>}/>
          <Route exact path="/login" element={<Login/>}/>
          <Route exact path="/recovery-password" element={<RecoveryPassword/>}/>
          <Route path="*" element={<NotFound/>}/>
        </Routes>
      </Layout>
    </Router>
  );
}

export default App;

2021-11-08 07:53:37

第一步:升级到React 16.8+和React -router-dom v5.2:

npm uninstall react-router-dom
npm install react-router-dom@5.2

步骤2:更新react-router-dom导入语句。

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

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

第三步:升级语法，把“Switch”换成“Routes”，把“component”换成“element”

改变

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

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

或者，您也可以按照其他解决方案中的建议降低react-router版本。

但是，我建议升级到react-router-dom及其语法的最新版本，而不是倒退。

2022-04-25 08:54:19

尝试导入错误:“Switch”没有从“react-router-dom”导出

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