重写和动态创建 asp.net mvc 的控制器

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

复制代码
 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;
        }
    }
复制代码

2、新建FolderController

复制代码
public class FolderController : Controller
    {
        // GET: Folder
        public ActionResult Index(string dynamicRoute)
        {            
            string viewFile = "/Views/" + dynamicRoute + ".cshtml";
            return View(viewFile);
        }
    }
复制代码

3、修改路由规则

复制代码
 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" }
            );
        }
复制代码

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:

http://files.cnblogs.com/files/wxb8/DynamicController.zip

posted @ 2020-12-17 11:05  gds111789  阅读(219)  评论(0编辑  收藏  举报