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[英]React Router v4 - Error: React.Children.only expected to receive a single React element child
[英]React.Children.only expected to receive a single React element child in React Router v4
我安装了react-router-dom
4.1.1并在尝试渲染我的组件时继续收到以下错误:
未捕获的错误:
React.Children.only
预计会收到一个React元素子元素。
这是我的app.js
文件:
import React from 'react';
import {BrowserRouter as Router, Route} from 'react-router-dom';
import Nav from './components/Nav/nav';
import Search from './components/Search/search';
import Favorites from './components/Favorites/favorites';
const App = () => (
<Router>
<div className="app">
<Nav />
<Route exact path="/" component={Search}/>
<Route path="/favorites" component={Favorites}/>
</div>
</Router>
);
export default App;
这是nav.jsx
:
import React from 'react';
import {BrowserRouter as NavLink} from 'react-router-dom';
const Nav = () => (
<ul className="nav">
<li><NavLink exact to="/" activeClassname="active">Search</NavLink></li>
<li><NavLink to="/favorites" activeClassname="active">Favorites</NavLink></li>
</ul>
);
export default Nav;
当我从app.js
删除<Nav />
时它会渲染,但我看不出nav.jsx
文件有什么问题。
出于某些奇怪的原因,您将BrowserRouter
混淆为NavLink
而不是仅导入NavLink
:
import { BrowserRouter as NavLink } from 'react-router-dom';
摆脱它并直接导入为名称:
import { NavLink } from 'react-router-dom';
因为BrowserRouter
期望一个React元素而不是文本,所以会抛出错误。
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