我想部署ASP.NET MVC 3应用程序,这使用Unity作为IoC容器。应用程序在本地服务器上工作正常,但部署时会引发异常:没有为此对象定义无参数构造函数。这引发了一个控制器,应该得到一些由我的Unity DependencyResolver注入的库。为什么我的Unity DependencyResolver不能在共享主机上工作,但在本地工作?
我已经安装Unity与NuGet,所以它应该直接引用,我已经检查它被复制到bin文件夹。
编辑:
这里的堆栈跟踪:
[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
人有一个想法可能是什么问题?
编辑2:
我已通过添加引用到GAC的mvc库(System.Web.Mvc等),而不是直接引用解决了这个问题。
此前,应用程序直接引用Mvc库,并将它们bin部署到托管服务器,因为服务器安装了.net 4.0和mvc 2,但由于托管提供程序安装了Mvc 3,因此我已更改为对GAC的引用。我想这是一些安全问题,但我在托管环境中对这种应用程序安全性很陌生,我真的很想知道问题到底是什么?资源链接也将不胜感激。
看起来像在web.config中的配置问题。同时向我们显示堆栈跟踪。 – 2011-03-11 20:58:06