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>
);
}
如果你正在使用react-router-dom v6,你必须改变Switch到Routes,如下面的例子所示:
而不是导入Switch,
import {Switch,…} from 'react-router-dom';
进口航线
import{路由,…} from 'react-router-dom';
然后,不要使用component ={ComponentName},而是使用element={<ComponentName/>},如下所示:
import { Routes, Route, ...} from 'react-router-dom';
.
.
.
<Routes>
<Route exact path='/' element={<Home/>}></Route>
</Routes>
你必须先检查npm包的版本。
执行npm info react-router-dom version命令查看。
如果包版本为>= 6.0.0,则必须进行更改
import { BrowserRouter as Router, Switch, Route, Link } from "react-router-dom";
to
import { BrowserRouter as Router,Routes, Route, Link } from "react-router-dom";
也必须改变
<Route path="/home" component={Home} />
to
<Route path="/home" element={<Home/>} />