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React-RouterV6菜单路由跳转

小李快回家吃饭 人气:0

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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