javascript - react browserHistory.push 给出未捕获的类型错误 : Cannot read property 'push' of undefined

Question

我正在尝试通过点击更改页面。这里是点击函数

import React, { Component } from 'react';
import {BrowserRouter as Router,Route} from 'react-router-dom';
import { browserHistory } from 'react-router';
class Buttons extends Component {
skipClick(){
    browserHistory.push('/sessionstate2');
}
render() {
return (<a className={skipShow} onClick={this.skipClick}>Skip</a>)
}
}

和 index.js

import browserHistory from 'react-router';
ReactDOM.render(
    <Router history={browserHistory}>
    <div>
      <Route exact path="/" component={App} />
      <Route exact path="/sessionstate1" component={Template1}/>
      <Route exact path="/sessionstate2" component={Template2}/>
      <Route exact path="/sessionstate3" component={Template3}/>
</div>
  </Router>,
   document.getElementById('root')
 );

付出

Uncaught TypeError: Cannot read property 'push' of undefined

你能告诉我我做错了什么吗？

Answer 1

这是一个可重现的示例，说明如何在 React Router v4 中以编程方式更改路由。

首先，安装一个简单应用的样板文件:

sudo npm install -g create-react-app
create-react-app demo-app
cd demo-app
npm install react-router-dom

然后我们将 /src/App.js 更改为:

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

const BasicExample = () => (
  <Router>
    <div>
      <li><Link to="/">Home</Link></li>
      <li><Link to="/about">About</Link></li>

      <Route exact path="/" component={Home}/>
      <Route path="/about" component={About}/>
    </div>
  </Router>
)

const Home = () => (
  <div>
    <h2>Home</h2>
  </div>
)

const Button = withRouter(({history}) => (
  <button type='button' onClick={() => { history.push('/new-location') }}>Click Me!</button>
))

const About = () => (
  <div>
    <h2>About</h2>
    <Button />
  </div>
)

export default BasicExample

然后启动你的服务器:

npm run start

如果您导航到 localhost:3000，然后单击关于，您将看到按钮组件。单击它将以编程方式将路由更改为 /new-location