目的:一般组件的this.props上没有路由组件有的history,match,location属性,因此需要使用withRouter将普通组件进行包裹
//引入withRouterimport {withRouter} from 'react-router-dom'//使用export default withRouter(index)
import React, { Component } from 'react'import {withRouter} from 'react-router-dom'class index extends Component {back=()=>{this.props.history.goBack()}forward=()=>{this.props.history.goForward()}go=()=>{this.props.history.go(-2)}render() {return (<div><h1>我是头部组件</h1><button onClick={this.back}>返回</button><button onClick={this.forward}>前进</button><button onClick={this.go}>回退两步</button></div>)}}export default withRouter(index)
此时this.props上面存在路由组件的三个属性了
