asp.net Mvc 动态创建Controller

时间:2023-03-08 16:57:04

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:

asp.net Mvc 动态创建Controller

测试结果如下:

asp.net Mvc 动态创建Controller

asp.net Mvc 动态创建Controller

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