import React, {Component} from 'react';import { NavLink,Link } from "react-router-dom";import './index.less';import PropTypes from 'prop-types'; //这里是重点import logo from '../../images/hyzklogo.png';import logoName from '../../images/logo_name.png';export default class Header extends Component {    static contextTypes = {   //这里是重点        router: PropTypes.object.isRequired,    }    constructor(props) {        super(props);        this.state = {            keyword:""        };        this.handleToSearch=this.handleToSearch.bind(this);        this.handleChange=this.handleChange.bind(this);    }    handleChange(event) {        this.setState({keyword: event.target.value});    }    handleToSearch() {       this.context.router.history.push(`/news_list/search/${this.state.keyword}`)  //这里是重点,实现跳转    }    render() {        return (               
     
                   
      
                       
       
                           
        
                               
         
                                        
         
                                        
         
                                   
                                             
          
 
            
          
                               
         
                           
        
                       
       
                       
       
                           
        
                               
         
                                   
          
 
           
            首页
            
                                   
          
 
           
            智库概况
            
                                   
          
 
           
            专家团队
            
                               
         
                           
        
                       
       
                   
      
               
     
        );    }}