对应的版本

"react": "^18.2.0",
"react-activation": "^0.12.4",
"react-dom": "^18.2.0",
"react-router-dom": "^6.15.0",

react-activation

这是一个npm包，在react keep alive中用的人数应该是最多的包.
这是GitHub地址react-activation

安装

yarn add react-activation
# 或者
npm install react-activation
# 或者
pnpm install react-activation 

   现在 main.tsx  入口文件中 使用 

import ReactDOM from "react-dom/client";
import { BrowserRouter } from "react-router-dom";
import App from "./App.tsx";
import { AliveScope } from "react-activation";

const { VITE_PROJECT_BASE } = import.meta.env;

ReactDOM.createRoot(document.getElementById("root")!).render(
      <BrowserRouter basename={VITE_PROJECT_BASE}>
        <AliveScope>  //  添加这个 AliveScope
          <App />
        </AliveScope>
      </BrowserRouter>
);

  route.ts 路由文件中的使用

import { Outlet } from "react-router-dom";
import { RoutesTypes } from "@/types/routesType";
import { TableOutlined } from "@ant-design/icons";
import KeepAlive from "react-activation";  // 添加这个 包裹对应的组件
// id  是 用作 唯一标识的  name 的 是 后期 调用  react-activation 对应方法，去除，和刷新组件

// 房间
import RoomList from "@/pages/RoomManagement/RoomList/index.tsx";

// 公播
import PublicBroadcastingList from "@/pages/PublicBroadcastingManagement/PublicBroadcastingList/index.tsx";
import DefaultPublicBroadcasting from "@/pages/PublicBroadcastingManagement/DefaultPublicBroadcasting/index.tsx";

// 设备
import DeviceList from "@/pages/DeviceManagement/DeviceList/index.tsx";
import DeviceConfiguration from "@/pages/DeviceManagement/DeviceConfiguration/index.tsx";

const routes: RoutesTypes[] = [
  {
    sort: 1,
    path: "/layout/sass-platform",
    element: <Outlet />,
    meta: {
      title: "测试平台",
    },
    children: [
      {
        path: "/layout/sass-platform/room-management",
        element: <Outlet />,
        meta: {
          title: "房间管理",
          icon: TableOutlined,
        },
        children: [
          {
            path: "/layout/sass-platform/room-management/room-list",

            element: (
              <KeepAlive
                id="/layout/sass-platform/room-management/room-list"
                name="/layout/sass-platform/room-management/room-list"
              >
                <RoomList />
              </KeepAlive>
            ),
            meta: {
              title: "房间列表",
              icon: TableOutlined,
            },
          },
        ],
      },
      {
        path: "/layout/sass-platform/public-broadcasting-management",
        element: <Outlet />,
        meta: {
          title: "公播管理",
          icon: TableOutlined,
        },
        children: [
          {
            path: "/layout/sass-platform/public-broadcasting-management/public-broadcasting-list",
            element: (
              <KeepAlive
                id="/layout/sass-platform/public-broadcasting-management/public-broadcasting-list"
                name="/layout/sass-platform/public-broadcasting-management/public-broadcasting-list"
              >
                <PublicBroadcastingList />
              </KeepAlive>
            ),
            meta: {
              title: "公播列表",
              icon: TableOutlined,
            },
          },
          {
            path: "/layout/sass-platform/public-broadcasting-management/default-public-broadcasting",
            element: (
              <KeepAlive
                id="/layout/sass-platform/public-broadcasting-management/default-public-broadcasting"
                name="/layout/sass-platform/public-broadcasting-management/default-public-broadcasting"
              >
                <DefaultPublicBroadcasting />
              </KeepAlive>
            ),
            meta: {
              title: "默认公播",
              icon: TableOutlined,
            },
          },
        ],
      },
      {
        path: "/layout/sass-platform/device-management",
        element: <Outlet />,
        meta: {
          title: "设备管理",
          icon: TableOutlined,
        },
        children: [
          {
            path: "/layout/sass-platform/device-management/device-list",
            element: (
              <KeepAlive
                id="/layout/sass-platform/device-management/device-list"
                name="/layout/sass-platform/device-management/device-list"
              >
                <DeviceList />
              </KeepAlive>
            ),
            meta: {
              title: "设备列表",
              icon: TableOutlined,
            },
          },
          {
            path: "/layout/sass-platform/device-management/device-configuration",
            element: (
              <KeepAlive
                id="/layout/sass-platform/device-management/device-configuration"
                name="/layout/sass-platform/device-management/device-configuration"
              >
                <DeviceConfiguration />
              </KeepAlive>
            ),
            meta: {
              title: "设备配置",
              icon: TableOutlined,
            },
          },
        ],
      },
    ],
  },
];

export default routes;

缓存的路由的不能懒加载

最后 路由的显示

Outlet 放置位置

文档：https://github.com/CJY0208/react-activation/blob/master/README_CN.md

手动控制缓存

使用 withAliveScope 或 useAliveController 获取控制函数

import KeepAlive, { withAliveScope, useAliveController } from 'react-activation'

//hook 函数式组件
function app(){
    const { drop, dropScope, clear, getCachingNodes } = useAliveController()
}

//class 类组件
@withAliveScope
class App extends Component {
    render() {
        const { drop, dropScope, clear, getCachingNodes } = this.props
    }
}

• drop(name) 卸载缓存，不包括嵌套的KeepAlive
• dropScope(name) 卸载缓存，包括嵌套的所有KeepAlive
• refresh(name) 刷新缓存状态，不包括嵌套的KeepAlive
• refreshScope(name) 刷新缓存状态，包括嵌套的所有KeepAlive
• clear() 清空所有缓存
• getCachingNodes() 获取所有缓存中的节点

KeepAlive属性 

// 例如：以下表示卸载时不缓存，并卸载掉嵌套的所有 `<KeepAlive>`
<KeepAlive when={[false, true]}>
  ...
  <KeepAlive>
    ...
    <KeepAlive>...</KeepAlive>
    ...
  </KeepAlive>
  ...
</KeepAlive>