React-RouterV6 + AntdV4实现Menu菜单路由跳转,采用子路由嵌套的方式
两种实现方式:
方式一:编程式跳转
使用useNavigate()
方式二:NavLink链接式
<Link to="/home">主页</Link>
配置路由和主页
App.js
import { Routes, Route, Navigate, useLocation } from 'react-router-dom' import Home from './pages/Home'; import Main from './pages/Main'; import User from './pages/User'; import Auth from './pages/Auth'; function App() { // 获取浏览器url const location = useLocation() const { path } = location console.log(path); return ( <Routes> {/* 重定向到主页 */} <Route path='*' element={<Navigate to="/home" />} /> {/* 主页及其子路由 */} <Route exact path='/home' element={<Home />} > {/* url为/home时主动触发二级路由 */} <Route exact index element={<Main />} /> <Route exact path='/home/user/list' element={<User />} /> <Route exact path='/home/user/auth' element={<Auth />} /> </Route> </Routes> ); } export default App;
Home/index.js
react-router-dom的Outlet组件,类似于Vue中的router-view,在Outlet处会渲染任何匹配到的子路由组件。
import React from 'react'; import { Breadcrumb, Layout } from 'antd'; import '../../assets/css/layout.css'; import { LaptopOutlined, NotificationOutlined, UserOutlined } from '@ant-design/icons'; import { Outlet } from 'react-router-dom' import SiderLeft from '../../components/SiderLeft.js'; import TopHeader from '../../components/TopHeader'; const { Header, Content, Sider } = Layout; export default class Home extends React.Component { constructor(props) { super(props); this.state = {}; } // 生命周期函数 componentDidMount() { console.log('componentDidMount'); } componentWillUnmount() { console.log('componentWillUnmount'); } render() { return ( <Layout> {/* 头部 */} <Header> <TopHeader /> </Header> <Layout className="layout-main"> {/* 左侧导航栏 */} <Sider width={200} className="layout-nav-box" style={{ position: 'fixed', left: 0, top: 64, bottom: 0 }} > {/* 渲染左侧菜单组件 */} <SiderLeft /> </Sider> {/* 右边区域 */} <Layout style={{ position: 'relative', right: 0, top: 64, marginLeft: 200, padding: '0 24px 24px', }} > <Breadcrumb style={{ margin: '16px 0', }} > <Breadcrumb.Item>Home</Breadcrumb.Item> <Breadcrumb.Item>List</Breadcrumb.Item> <Breadcrumb.Item>App</Breadcrumb.Item> </Breadcrumb> <Content className="layout-content" style={{ padding: 24, margin: 0, minHeight: 280, }} > {/* 渲染子路由 匹配到子路由时,用子路由的组件替换此处内容*/} {/* 类似Vue中的router-view */} <Outlet /> </Content> </Layout> </Layout> </Layout> ) } }
一、编程式跳转
编程式跳转的方式使用react-router-dom中的useNavigate方法,传入url路径即可进行页面跳转。
注意:useNavigate不能在类组件中使用,如果你非要在类组件中使用,可以使用高阶组件,对类组件进行一个包裹,让原始类组件拥有useNavigate功能。(函数组件中使用useNavigate请自行实现)
Menu/SiderLeft.js
import { Menu } from 'antd'; import React from 'react'; import { LaptopOutlined, NotificationOutlined, UserOutlined } from '@ant-design/icons'; // 高阶组件,包裹useNavigate()功能 import WidthUseNavigate from './withComponents/WithUseNavigate'; class SiderLeft extends React.Component { constructor(props) { super(props); this.state = { items: [{ key: "/home", icon: React.createElement(UserOutlined), label: "概览" }, { key: "/home/user", icon: React.createElement(UserOutlined), label: "用户管理", children: [{ key: "/home/user/list", label: "成员管理" }, { key: "/home/user/auth", label: "权限设置" }, { key: "sub23", label: "菜单三" }, { key: "sub24", label: "菜单四" }, { key: "sub25", label: "菜单五" }] }] }; } click = (e) => { console.log(e); console.log(e.key); //注意this指向问题,采用箭头函数this就指向当前组件 this.props.to(e.key); } openChange() { console.log('OpenChange'); } render() { return ( <Menu theme="light" mode="inline" defaultSelectedKeys={['/home']} defaultOpenKeys={['/home/user']} style={{ height: '100%', borderRight: 0, }} items={this.state.items} onOpenChange={() => this.openChange()} onClick={this.click} /> ) } } // 使用高阶组件包裹当前类组件 const NavigateCompont = WidthUseNavigate(SiderLeft); // 导出包裹后的类组件 export default NavigateCompont;
高阶组件,包裹useNavigate()功能
widthUseNavigate.js
import { useNavigate } from 'react-router-dom' // 高阶组件包装useNavigate()功能 // 原因:类组件中无法使用useNavigate(),会报错 // React Hook "useNavigate" cannot be called in a class component. function widthUseNavigate(WrapCompontent) { // 设置别名 WrapCompontent.displayName = `widthUseNavigate${getDisplayName(WrapCompontent)}` return function NavigateCompont() { const navigate = useNavigate() // 给传入的组件新增一个to方法,传给原始组件的props,在原始组件中通过this.props.to(参数)使用 return <WrapCompontent to={navigate}></WrapCompontent> } } // 别名 function getDisplayName(WrapCompontent) { return WrapCompontent.displayname || WrapCompontent.name || 'Component' } export default widthUseNavigate
二、链接式跳转
在Menu组件的items中将label的值设置为<Link to="/home">主页</Link>,菜单显示“主页”,同时具备链接跳转功能。
Menu/SiderLeft.js
import { Menu } from 'antd'; import React from 'react'; import { LaptopOutlined, NotificationOutlined, UserOutlined } from '@ant-design/icons'; import { NavLink as Link } from 'react-router-dom'; export default class SiderLeft extends React.Component { constructor(props) { super(props); this.state = { items: [{ key: "/home", icon: React.createElement(UserOutlined), label: <Link to="/home">概览</Link> }, { key: "/home/user", icon: React.createElement(UserOutlined), label: "用户管理", children: [{ key: "/home/user/list", label: <Link to="/home/user/list">成员管理</Link> }, { key: "/home/user/auth", label: <Link to="/home/user/auth">权限设置</Link> }, { pass... }] }] }; } openChange() { console.log('OpenChange'); } render() { return ( <Menu theme="light" mode="inline" defaultSelectedKeys={['/home']} defaultOpenKeys={['/home/user']} style={{ height: '100%', borderRight: 0, }} items={this.state.items} onOpenChange={() => this.openChange()} /> ) } }
三、实现效果
两种方式都能实现点击左侧菜单,右侧内容区显示不同组件。
Main/index.js
import React from 'react'; export default class Main extends React.Component { constructor(props) { super(props); this.state = {}; } render() { return ( // React.Fragment一般跟在return后面,用来包裹元素,之前一般会用div进行包裹 // Fragment相比于div的好处是在dom中不会增加额外节点,也可以直接简写为<></> <React.Fragment> <div className="layout-content-display"> 主内容区 </div> </React.Fragment> ) } }
User/index.js
import React from 'react'; export default class User extends React.Component { constructor(props) { super(props); this.state = {}; } render() { return ( <React.Fragment> <div className="layout-content-display"> 用户列表 </div> </React.Fragment> ) } }
Auth/index.js
import React from 'react'; export default class Auth extends React.Component { constructor(props) { super(props); this.state = {}; } render() { return ( <React.Fragment> <div className="layout-content-display"> 权限设置 </div> </React.Fragment> ) } }
输入任何未匹配到路由的url,重定向到主页,默认渲染Main组件
点击“成员管理”,右侧内容展示区渲染User组件
点击“权限管理”,右侧内容展示区渲染Auth组件
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