今天我们来继续探讨react的路由跳转

首先，创建router文件夹中的index

import { lazy } from "react";
import { Outlet,useRoutes } from 'react-router-dom';
//引入页面，引用了路由懒加载
const One = lazy(() => import('../pages/one'));
const Two = lazy(() => import('../pages/two'));
const Three = lazy(() => import('../pages/three'));
//设置页面的路由路径
const routes = [
  {
    path: '/one',
    element: <One/>,
  },
  {
    path: '/two',
    element: <Two/>,
    children: []
  },
  {
    path: '/three',
    element: <Three/>,
  }
];
const WrappedRoutes = () => {
    return useRoutes(routes);
  };
  export default WrappedRoutes;

之后就是App.js页面了，我的layout是写在app.js里的，所以要在app.js进行设置

import React, { useState,lazy } from 'react';
import {
  MenuFoldOutlined,
  MenuUnfoldOutlined,
  UploadOutlined,
  UserOutlined,
  VideoCameraOutlined,
} from '@ant-design/icons';
import { Layout, Menu, Button, theme } from 'antd';
import WrappedRoutes from './router/index'; // 引入路由表
import { useLocation, useNavigate,Routes, Route } from 'react-router-dom';
const One = lazy(() => import('./pages/one'));
const Two = lazy(() => import('./pages/two'));
const Three = lazy(() => import('./pages/three'));
const { Header, Sider, Content } = Layout;

const App: React.FC = () => {
  const [collapsed, setCollapsed] = useState(false);
  const {
    token: { colorBgContainer },
  } = theme.useToken();
  const navigate = useNavigate();
  const { pathname } = useLocation(); // 获取当前url
  const handleClick = (e: any) => {
    // 获取当前点击事件的key值，key值就是我们给页面配置的路由啦
    console.log('key', e.key);
    navigate(e.key,{replace:true}); // 实现跳转
  }
  return (
    <Layout>
      <Sider trigger={null} collapsible collapsed={collapsed}>
        <div className="demo-logo-vertical" />
        <Menu
          theme="dark"
          mode="inline"
          selectedKeys={[pathname]}
          onClick={handleClick}   //给侧边栏item设置点击事件
          defaultSelectedKeys={['1']}
          items={[
            {
              key: '/one',
              icon: <UserOutlined />,
              label: 'nav 1',
            },
            {
              key: '/two',
              icon: <VideoCameraOutlined />,
              label: 'nav 2',
            },
            {
              key: '/three',
              icon: <UploadOutlined />,
              label: 'nav 3',
            },
          ]}
        />
      </Sider>
      <Layout>
        <Header style={{ padding: 0, background: colorBgContainer }}>
          <Button
            type="text"
            icon={collapsed ? <MenuUnfoldOutlined /> : <MenuFoldOutlined />}
            onClick={() => setCollapsed(!collapsed)}
            style={{
              fontSize: '16px',
              width: 64,
              height: 64,
            }}
          />
        </Header>
        <Content
          style={{
            margin: '24px 16px',
            padding: 24,
            minHeight: 280,
            background: colorBgContainer,
          }}
        >
          {/*路由出口 */}
          <Routes>
              <Route exact path="/one" element={<One />} />
              <Route exact path="/two" element={<Two />} />
              <Route exact path="/three" element={<Three />} />
            </Routes>
        </Content>
      </Layout>
    </Layout>
  );
};

export default App;

到这里还有最重要的一步，因为我们这是的路由懒加载，这个时候跳转是会报错的

一直出现不能读到pathname，从<router>的时候就出现这个问题，那么问题估计出现在<router>这个标签上。找不到路径名，那就是没有找到地址于是我把<router>换成了<BrowserRouter>，就可以了。

import React,{ Suspense } from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';
import { BrowserRouter } from 'react-router-dom';
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(
  <React.StrictMode>
    <BrowserRouter>
    {/* 在使用组件懒加载的时候，在外面套一个react的组件:Suspense ，否则会报错没有  */}
      <Suspense>
        <App />
      </Suspense>
    </BrowserRouter>
  </React.StrictMode>
);
reportWebVitals();

最后，在使用路由懒加载的同时，一定要记得使用<Suspense>嵌套，否则还是会报错，切记切记