Comment demander une actualisation partielle en réaction

//import React from 'react'; 引入类
//import { Component } from 'react';  引入对象
import React, { Component } from 'react';
import {HashRouter, Route, Switch} from 'react-router-dom';

//引入布局和子组件
import BasicLayout from '../layout/layout';
import Analysis from '../coms/Analysis';
import Monitor from '../coms/Monitor';
import Workplace from '../coms/Workplace';

//分配路由
const BasicRoute = () => (
    <HashRouter>
        <Switch>
            <Route exact path="/" component={BasicLayout}/>
            <Route exact path="/Analysis" component={Analysis}/>
            <Route  path="/Monitor" component={Monitor}/>
            <Route  path="/Workplace" component={Workplace}/>
        </Switch>
    </HashRouter>
);

export default BasicRoute;

import React, { Component } from 'react';
import  {Layout ,Menu,Icon} from 'antd';
import { Router, Route, Link,HashRouter } from 'react-router-dom'
import 'antd/dist/antd.min.css'
import BasicRoute from '../routes/router';

const { Header, Footer, Sider, Content } = Layout;

export default class BasicLayout extends Component {
  render() {
    return (
        <Layout>
        <Sider width={256} style={{ minHeight: &#39;100vh&#39;, color: &#39;white&#39; }}>
            
            <Menu theme="dark" mode="inline" >
                {/*定义了项目的link，会按照路由走*/}
                <Menu.Item><Link to="/Analysis">Item1</Link></Menu.Item>
            </Menu>
            
        </Sider>
        <Layout >
          <Header style={{ background: &#39;#fff&#39;, textAlign: &#39;center&#39;, padding: 0 }}>Header</Header>
          <Content style={{ margin: &#39;24px 16px 0&#39; }}>
            <div style={{ padding: 24, background: &#39;#fff&#39;, minHeight: 360 }}>
              {/*Analysis.js文件引用了BasicLayout，并把自己的全部子节点(子组件)传过来*/}
              {this.props.children}
              
            </div>
          </Content>
          <Footer style={{ textAlign: &#39;center&#39; }}>Ant Design ©2018 Created by Ant UED</Footer>
        </Layout>
      </Layout>
    )
  }
}