React-Router只有一个孩子 [英] React-Router only one child

问题描述

我一直收到错误：

'路由器'可能只有一个子元素

A 'Router' may have only one child element

使用react-router时。

when using react-router.

我似乎无法弄清楚为什么这不起作用，因为它与他们在示例中显示的代码完全相同： https://reacttraining.com / react-router / web / guides / quick-start

I can't seem to figure out why this is not working, since it's exactly like the code they show in their example: https://reacttraining.com/react-router/web/guides/quick-start

这是我的代码：

import React from 'react';
import Editorstore from './Editorstore';
import App from './components/editor/App';
import BaseLayer from './components/baselayer';
import {BrowserRouter as Router, Route} from 'react-router-dom';
import {render} from 'react-dom';

const root = document.createElement('div');
root.id = 'app';
document.body.appendChild(root);

const store = new Editorstore();
const stylelist = ['https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css', 'https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.2/semantic.min.css', 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css', 'https://api.tiles.mapbox.com/mapbox-gl-js/v0.33.1/mapbox-gl.css'];

stylelist.map((link) => {
    const a = document.createElement('link');
    a.rel = 'stylesheet';
    a.href = link;
    document.body.appendChild(a);
    return null;
});

render((
  <Router>
    <Route exact  path="/" component={BaseLayer} />
    <Route path="/editor" component={App} store={store} />
  </Router>
), document.querySelector('#app'));

感谢您的帮助

推荐答案

你必须在< div> 中包装你的路线（或者 < Switch> ）。

You have to wrap your Route's in a <div>(or a <Switch>).

render((
  <Router>
    <Route exact  path="/" component={BaseLayer} />
    <Route path="/editor" component={App} store={store} />
  </Router>
), document.querySelector('#app'));

应该是

render((
  <Router>
    <div>
       <Route exact  path="/" component={BaseLayer} />
       <Route path="/editor" component={App} store={store} />
    </div>
  </Router>
), document.querySelector('#app'));

jsfiddle / webpackbin

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