我想部署ASP.NET MVC 3應用程序,這使用Unity作爲IoC容器。應用程序在本地服務器上工作正常,但部署時會引發異常:沒有爲此對象定義無參數構造函數。這引發了一個控制器,應該得到一些由我的Unity DependencyResolver注入的庫。爲什麼我的Unity DependencyResolver不能在共享主機上工作,但在本地工作?
我已經安裝Unity與NuGet,所以它應該直接引用,我已經檢查它被複制到bin文件夾。
編輯:
這裏的堆棧跟蹤:
[MissingMethodException: No parameterless constructor defined for this object.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) +98
System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) +241
System.Activator.CreateInstance(Type type, Boolean nonPublic) +69
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +67
[InvalidOperationException: An error occurred when trying to create a controller of type 'nBlog.Controllers.HomeController'. Make sure that the controller has a parameterless public constructor.]
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +182
System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +80
System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) +74
System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) +196
System.Web.Mvc.<>c__DisplayClass6.<BeginProcessRequest>b__2() +49
System.Web.Mvc.<>c__DisplayClassb`1.<ProcessInApplicationTrust>b__a() +13
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Func`1 func) +124
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +98
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +50
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8841400
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +18
人有一個想法可能是什麼問題?
編輯2:
我已通過添加引用到GAC的mvc庫(System.Web.Mvc等),而不是直接引用解決了這個問題。
此前,應用程序直接引用Mvc庫,並將它們bin部署到託管服務器,因爲服務器安裝了.net 4.0和mvc 2,但由於託管提供程序安裝了Mvc 3,因此我已更改爲對GAC的引用。我想這是一些安全問題,但我在託管環境中對這種應用程序安全性很陌生,我真的很想知道問題到底是什麼?資源鏈接也將不勝感激。
看起來像在web.config中的配置問題。同時向我們顯示堆棧跟蹤。 – 2011-03-11 20:58:06