asp.net Mvc 动态创建Controller
有这么个需求,Urls如下:
http://localhost:52804
http://localhost:52804/home/test
http://localhost:52804/test1
http://localhost:52804/test1/aaa
http://localhost:52804/test1/bbb
http://localhost:52804/test2/aaa
http://localhost:52804/test2/bbb
第1和2条url是代表真实存在Controller的,后面的都是需要动态生成Controller的,为了实现这样的需求,通过查找资料,可以重写DefaultControllerFactory实现。步骤和代码如下:
1、新建FolderControllerFactory.cs继承自DefaultControllerFactory
public class FolderControllerFactory : DefaultControllerFactory { public override IController CreateController(RequestContext requestContext, string controllerName) { var controllerType = GetControllerType(requestContext, controllerName); // 如果controller不存在,替换为FolderController if (controllerType == null) { // 用路由字段动态构建路由变量 var dynamicRoute = string.Join("/", requestContext.RouteData.Values.Values); controllerName = "Folder"; controllerType = GetControllerType(requestContext, controllerName); requestContext.RouteData.Values["Controller"] = controllerName; requestContext.RouteData.Values["action"] = "Index"; requestContext.RouteData.Values["dynamicRoute"] = dynamicRoute; } IController controller = GetControllerInstance(requestContext,controllerType); return controller; } }
2、新建FolderController
public class FolderController : Controller { // GET: Folder public ActionResult Index(string dynamicRoute) { string viewFile = "/Views/" + dynamicRoute + ".cshtml"; return View(viewFile); } }
3、修改路由规则
public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); routes.MapRoute( "CatchAll", "{*dynamicRoute}", new { controller = "Folder", action = "Index" } ); }
4、在Global.asax注册自定义的FolderControllerFactory
protected void Application_Start() { ControllerBuilder.Current.SetControllerFactory(new FolderControllerFactory()); AreaRegistration.RegisterAllAreas(); RouteConfig.RegisterRoutes(RouteTable.Routes); }
5、在Views下新建一些文件夹和View作为测试,如图:
测试结果如下:
这样就简单的实现了通过博主的需求。。
完整工程下载:
https://files.cnblogs.com/files/wxb8/DynamicController.zip