react怎么请求部分刷新

//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: "100vh", color: "white" }}>                        <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: "#fff", textAlign: "center", padding: 0 }}>Header</Header>          <Content style={{ margin: "24px 16px 0" }}>            <div style={{ padding: 24, background: "#fff", 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: "center" }}>Ant Design ©2018 Created by Ant UED</Footer>        </Layout>      </Layout>    )  }}

import React from "react";import BasicLayout from "../layout/layout";export default () => {    //用BasicLayout标签包裹，内容传到layout.js的this.props.children部分       return (<BasicLayout><h1>Analysis Page</h1></BasicLayout>)}