当使用 get: ^5.0.0-release-candidate-9.2.1最新版本时，中间件GetMiddleware各种教程都是让我们在redirect中实现，比如：

  @overrideRouteSettings? redirect(String? route) {return RouteSettings(name: "/companyAuthIndexPage");}

这个在之前版本是没有问题的，但是更新到最新版后，就无法生效了，查阅了官方后，得到了答案如下：

所有正确的姿势是：

  @overrideFutureOr<RouteDecoder?> redirectDelegate(RouteDecoder route) {return RouteDecoder.fromRoute("/companyAuthIndexPage");}

当然作为合格的码农，怎么会止步于此，看了源代码后，发现不能生效的的代码如下：

 bool needRecheck(BuildContext context) {if (settings == null && route != null) {settings = route;}final match = context.delegate.matchRoute(settings!.name!);// No Match foundif (match.route == null) {isUnknown = true;return false;}// No middlewares found return match.if (match.route!.middlewares.isEmpty) {return false;}final runner = MiddlewareRunner(match.route!.middlewares);route = runner.runOnPageCalled(match.route);addPageParameter(route!);final newSettings = runner.runRedirect(settings!.name);if (newSettings == null) {return false;}settings = newSettings;return true;}

关键在于赋值后的settings没有正常下发，所以即使redirect被调用，但是功能不会生效