1、 首先安装路由npm i react-router-dom插件，已安装的可以跳过
npm i react-router-dom
2、打开项目下src\index.js文件，添加如下代码
import {HashRouter as Router, Switch, Route} from 'react-router-dom';
import Login from './pages/Login/Login';
import Wecome from './pages/Home/Wecome';3、 路由部分代码，path为路径，component为组件地址
ReactDOM.render(
<Router>
<Switch>
<Route path="/login" component={Login}/>
<Route path="/wecome" component={Wecome}/>
</Switch>
</Router>,
document.getElementById('root')
);4、 完全index.js路由代码
import React from 'react';
import ReactDOM from 'react-dom';
import {HashRouter as Router, Switch, Route} from 'react-router-dom';
import './index.css';
import reportWebVitals from './reportWebVitals';
import Login from './pages/Login/Login';
import Wecome from './pages/Home/Wecome';
ReactDOM.render(
<Router>
<Switch>
<Route path="/login" component={Login}/>
<Route path="/wecome" component={Wecome}/>
</Switch>
</Router>,
document.getElementById('root')
);
// If you want to start measuring performance in your app, pass a function
// to log results (for example: reportWebVitals(console.log))
// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
reportWebVitals();5、 访问：输入下面url即可访问
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