新建react项目，react-router-dom配置路由，引入antd

提示：reactrouter6.4+版本，与reactrouter5.0的版本用法有区别，互不兼容需注意

文章目录

前言
一、创建项目
二、新建文件并引入react-router-dom、antd
三、配置路由跳转
四、效果
五、遇到的问题
六、参考文档
总结

前言

需求：新建react项目，react-router-dom配置路由，引入antd

一、创建项目

1、创建与安装

npx create-react-app my-react-app
cd my-react-app

项目结构
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npm install react-router-dom
npm install antd –save

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2、修改文件
app.js

import './App.css';
function App() {return (<div>my react app</div>);
}
export default App;

app.css

.App {text-align: center;
}

3、启动预览

npm start

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二、新建文件并引入react-router-dom、antd

1、新建文件

head.js、home.js、my.js、order.js、pay.js内容基本一致，贴一个例子，其余修改对应值即可

import React from 'react';class Pay extends React.Component {render() {return <div>Pay</div>;}
}
export default Pay;

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main.js

import React from 'react';
import { Outlet } from "react-router-dom";
class Main extends React.Component {render() {return <div><Outlet /></div>;}
}
export default Main;

side.js

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{let obj = {key:index,label:item.label,}if(item.children){ item.children.forEach((citem,i)=>{citem.key=index+'-'+i;});obj.children = item.children}menus.push(obj);
});
export default function Side() {const navigate = useNavigate();function goPath(e){let keys = e.key.split('-');let route,cRoute;route = Routes[keys[0]];if(route.children){cRoute = route.children[keys[1]];}let path = route.path + (cRoute?'/'+cRoute.path:'');navigate(path);}return <div><MenudefaultSelectedKeys={['0']}defaultOpenKeys={['1']}mode="inline"theme="dark"items={menus}onClick={goPath}/></div>;
}

routes/index.js

import Home from '../components/home';
import My from '../components/my';
import Order from '../components/order';
import Pay from '../components/pay';
import Main from '../components/main';const Routes = [{path: "/",label:'首页',element: <Home/>,},{path: "main",label:'业务',element: <Main/>,children:[{path: "order",label:'订单',element: <Order/>,},{path: "pay",label:'支付信息',element: <Pay/>,},]},{path: "my",label:'我的',element: <My/>,},
];
export default Routes;

2、新建后文件结构
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三、配置路由跳转

1、修改App.js和App.css文件
App.js

import { BrowserRouter ,Route,Routes} from "react-router-dom";
import './App.css';
import routes from './routes';
import Head from './components/head';
import Side from './components/side';
function renderRoute(){let arr = [];routes.forEach((item,i)=>{if(item.children){item.children.forEach((citem,ci)=>{arr.push(<Route key={i+'-'+ci} path={item.path+'/'+citem.path} element={citem.element}></Route>);})}else{arr.push(<Route key={i} path={item.path} element={item.element}></Route>);}})return arr;
}function App() {return (<div className="App"><BrowserRouter><div className='app_head'><Head/></div><div className='app_side'><Side/></div> <div className='app_main'><Routes>{ renderRoute() }</Routes></div> </BrowserRouter></div>);
}
export default App;

App.css

.App {text-align: center;position: absolute;top: 0;left: 0;right: 0;bottom: 0;
}
.app_head{position: absolute;top: 0;left: 0;width: 100%;height: 64px;background-color: #dbeff3;
}
.app_side{position: absolute;top: 64px;left: 0;bottom: 0;width: 320px;background-color: #707472;
}
.app_main{position: absolute;top: 64px;left: 320px;bottom: 0;right: 0;background-color: #fff;
}

四、效果

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五、遇到的问题

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useNavigate必须在router component里使用，side.js里调用的useNavigate，所以side
componet必须在BrowserRouter里

app.js错误写法

import { BrowserRouter ,Route,Routes} from "react-router-dom";
import './App.css';
import routes from './routes';
import Head from './components/head';
import Side from './components/side';
function renderRoute(){let arr = [];routes.forEach((item,i)=>{if(item.children){item.children.forEach((citem,ci)=>{arr.push(<Route key={i+'-'+ci} path={item.path+'/'+citem.path} element={citem.element}></Route>);})}else{arr.push(<Route key={i} path={item.path} element={item.element}></Route>);}})return arr;
}function App() {return (<div className="App"><div className='app_head'><Head/></div><div className='app_side'><Side/></div> <BrowserRouter><div className='app_main'><Routes>{ renderRoute() }</Routes></div> </BrowserRouter></div>);
}
export default App;

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useNavigate应该放在一个react function component里

side.js错误写法

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{let obj = {key:index,label:item.label,}if(item.children){ item.children.forEach((citem,i)=>{citem.key=index+'-'+i;});obj.children = item.children}menus.push(obj);
});
const navigate = useNavigate();
class Side extends React.Component {render() {function goPath(e){let keys = e.key.split('-');let route,cRoute;route = Routes[keys[0]];if(route.children){cRoute = route.children[keys[1]];}let path = route.path + (cRoute?'/'+cRoute.path:'');navigate(path);}return <div><MenudefaultSelectedKeys={['0']}defaultOpenKeys={['1']}mode="inline"theme="dark"items={menus}onClick={goPath}/></div>;}
}
export default Side;

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useNavigate应该放在一个react function component里，而不是一个class component里

side.js错误写法

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{let obj = {key:index,label:item.label,}if(item.children){ item.children.forEach((citem,i)=>{citem.key=index+'-'+i;});obj.children = item.children}menus.push(obj);
});
class Side extends React.Component {render() {const navigate = useNavigate();function goPath(e){let keys = e.key.split('-');let route,cRoute;route = Routes[keys[0]];if(route.children){cRoute = route.children[keys[1]];}let path = route.path + (cRoute?'/'+cRoute.path:'');navigate(path);}return <div><MenudefaultSelectedKeys={['0']}defaultOpenKeys={['1']}mode="inline"theme="dark"items={menus}onClick={goPath}/></div>;}
}
export default Side;