HarmonyOS Web嵌套之后多开几个页面，然后跳转到之前的页面，加载会白屏之后显示

build() { 
  Row() { 
    Column() { 
      NavigationExample({ url: this.url, pageStackName: this.pageStackName }) 
    } 
    .width('100%') 
  } 
  .height('100%') 
} 
} 
 
 
export struct NavigationExample { 
  aboutToAppear(): void { 
    Logger.info(TAG, 'NavigationExample aboutToAppear'); 
    GlobalRouter.getInstance().firstLoad(this.url, this.pageStackName); 
  } 
} 
 
 
 
public firstLoad(url: string, pageStackName: string): void { 
 
  // 加载url 
  url = DomainUtil.processDomain(url); 
  let routerStorageInstance: RouterStorage = RouterStorage.getInstance(); 
  let webId: number = WebManager.getInstance().getWebInstanceId(false, url); 
  let routeType: RouteType = RouteType.MULTI_MULTI; 
  let nodeType: number = DomainUtil.getRouterType(url); 
  routerStorageInstance.addRouteType(routeType); 
  routerStorageInstance.addNode(url, webId, nodeType); 
 
  NavigationController.getInstance().pushPath(true, pageStackName); 
 
 
  WebManager.getInstance().getWebController(webId)?.loadUrl(url); 
 
  WebManager.getInstance().getWebController(webId)?.onActive();//设置该web组件onActive 解决该问题 
}