问题描述:点击左侧路由切换会出现闪屏的情况

页面的效果

解决方案

完整代码

import { lazy, Suspense, ReactNode } from "react";
import { Navigate, useLocation } from "react-router-dom";
import LayOut from '../pages/LayOut/LayOut'
import NotFound from '../pages/NotFound/NotFound'
const LoginIndex = lazy(() => import('../pages/LoginIndex/LoginIndex'))
const DashBoard = lazy(() => import('../pages/DashBoard/DashBoard'))
const UserInfo = lazy(() => import('../pages/UserInfo/UserInfo'))
const SettingPage = lazy(() => import('../pages/SettingPage/SettingPage'))
const ItemList = lazy(() => import('../pages/ItemList/ItemList'))
const GoodsList = lazy(() => import('../pages/GoodsList/index'))
const BannerList = lazy(() => import('../pages/BannerList/index'))

const laztRoutes = (element: ReactNode): ReactNode => {
    return <Suspense fallback={<div>Loading...</div>}>
        {element} </Suspense>
}

const RequireAuth = ({ children }: { children: ReactNode }): ReactNode => {
    const location = useLocation();
    const token = localStorage.getItem('token'); // 假设token存储在localStorage中

    if (!token) {
        return <Navigate to="/login" state={{ from: location }} replace />;
    }

    return children;
}

export default [
    {
        path: '/',
        element: <Navigate to='/dashboard' />,
    },
    {
        path: '/',
        element: <RequireAuth><LayOut /></RequireAuth>,
        children: [

            {
                path: '/dashboard',
                element: laztRoutes(<DashBoard />)
            },
            {
                path: '/userinfo',
                element: laztRoutes(<UserInfo />)
            },
            {
                path: '/setting',
                element: laztRoutes(<SettingPage />)
            },
            {
                path: '/itemlist',
                element: laztRoutes(<ItemList />)
            },
            {
                path: '/goods',
                element: laztRoutes(<GoodsList />)
            },
            {
                path: '/banner',
                element: laztRoutes(<BannerList />)
            }
        ]
    },
    {
        path: '/login',
        element: <LoginIndex />
    },
    {
        path: '*',
        element: <NotFound />
    }
]