Question

我之前使用过教程Dependency Injection in ASP.NET Web API 2中的Unity依赖注入。

但我想使用HierarchicalLifetimeManager，所以我安装了Unity bootstrapper for ASP.NET Web API。

然而，这给了我一个我之前没有AccountController的错误。据我所知，它与IUserStore有关，但我不明白为什么在安装这个NuGet后会出现这个错误。 Unity已经安装和使用过，我没有注册AccountController的类型。

UnityConfig.cs：

public static void RegisterTypes(IUnityContainer container)
{
    container.RegisterType<DbContext>(new HierarchicalLifetimeManager());

    container.RegisterType<IArticleRepository, ArticleRepository>(new HierarchicalLifetimeManager());
    container.RegisterType<ISupplierRepository, SupplierRepository>(new HierarchicalLifetimeManager());
    container.RegisterType<IContactRepository, ContactRepository>(new HierarchicalLifetimeManager());
    container.RegisterType<ICampaignRepository, CampaignRepository>(new HierarchicalLifetimeManager());
}

{＆＃34;消息＆＃34;：＆＃34;发生错误。＆＃34;，＆＃34; ExceptionMessage＆＃34;：＆＃34;错误尝试创建类型的控制器时发生＆＃39;的AccountController＆＃39 ;.确保控制器具有无参数上市。构造＆＃34;＆＃34; ExceptionType＆＃34;：＆＃34; System.InvalidOperationException＆＃34;＆＃34;堆栈跟踪＆＃34;：＆＃34; 在 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create（HttpRequestMessage 请求，HttpControllerDescriptor controllerDescriptor，Type controllerType）\ r \ n at System.Web.Http.Controllers.HttpControllerDescriptor.CreateController（HttpRequestMessage 请求）\ r \ n at System.Web.Http.Dispatcher.HttpControllerDispatcher.d__1.MoveNext（）＆＃34;＆＃34;的InnerException＆＃34; {＆＃34;消息＆＃34;：＆＃34;安错误已经发生。＆＃34;，＆＃34; ExceptionMessage＆＃34;：＆＃34;解决依赖性失败，输入= \＆＃34; Project.Sales.Web.Controllers.AccountController \＆＃34;， name = \＆＃34;（none）\＆＃34;。\ r \ n：while时发生异常解析。\ r \ n \ nException是：InvalidOperationException - 当前类型， Microsoft.AspNet.Identity.IUserStore`2 [HiQ.Repository.EntityFramework.Identity.BaseApplicationUser，System.Int32] 是一个接口，无法构造。你错过了一个类型吗？映射吗？\ r \ n -------------------------------------------- --- \ r \ nAtt 异常时间，容器是：\ r \ n \ r \ n解析 Project.Sales.Web.Controllers.AccountController，（无）\ r \ n解析参数\＆＃34; userManager \＆＃34;构造函数 Project.Sales.Web.Controllers.AccountController（Project.Sales.Web.ApplicationUserManager 的UserManager， Microsoft.Owin.Security.ISecureDataFormat`1 [Microsoft.Owin.Security.AuthenticationTicket， Microsoft.Owin.Security，Version = 3.0.1.0，Culture = neutral， PublicKeyToken = 31bf3856ad364e35]] accessTokenFormat）\ r \ n解析 Project.Sales.Web.ApplicationUserManager，（无）\ r \ n解析参数\＆＃34; store \＆＃34;构造函数 Project.Sales.Web.ApplicationUserManager（Microsoft.AspNet.Identity.IUserStore`2 [[HiQ.Repository.EntityFramework.Identity.BaseApplicationUser， HiQ.Repository.EntityFramework，Version = 0.1.2.0，Culture = neutral， PublicKeyToken = null]，[System.Int32，mscorlib，Version = 4.0.0.0， Culture = neutral，PublicKeyToken = b77a5c561934e089]] store）\ r \ n 解决 Microsoft.AspNet.Identity.IUserStore`2 [HiQ.Repository.EntityFramework.Identity.BaseApplicationUser，System.Int32]，（无）\ r \ n＆＃34;＆＃34; ExceptionType＆＃34;：＆＃34;微软.Practices.Unity.ResolutionFailedException＆＃34;＆＃34;堆栈跟踪＆＃34;：＆＃34; 在Microsoft.Practices.Unity.UnityContainer.DoBuildUp（Type t，Object 现有的，String名称，IEnumerable`1 resolverOverrides）\ r \ n at Microsoft.Practices.Unity.UnityContainer.Resolve（Type t，String name， ResolverOverride [] resolverOverrides）\ r \ n at Microsoft.Practices.Unity.UnityContainerExtensions.Resolve（IUnityContainer container，Type t，ResolverOverride []覆盖）\ r \ n at Microsoft.Practices.Unity.WebApi.UnityDependencyResolver.SharedDependencyScope.GetService（类型 serviceType）\ r \ n at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator（HttpRequestMessage 请求，输入controllerType，Func`1＆amp;激活者）\ r \ n at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create（HttpRequestMessage 请求，HttpControllerDescriptor controllerDescriptor，Type controllerType）＆＃34;，＆＃34; InnerException＆＃34;：{＆＃34; Message＆＃34;：＆＃34;错误有发生了。＆＃34;，＆＃34; ExceptionMessage＆＃34;：＆＃34;当前类型， Microsoft.AspNet.Identity.IUserStore`2 [HiQ.Repository.EntityFramework.Identity.BaseApplicationUser，System.Int32] 是一个接口，无法构造。你错过了一个类型吗？？映射＆＃34;＆＃34; ExceptionType＆＃34;：＆＃34; System.InvalidOperationException＆＃34;＆＃34;堆栈跟踪＆＃34;：＆＃34; 在 Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForAttemptingToConstructInterface（IBuilderContext 上下文\ r \ n在lambda_method（Closure，IBuilderContext）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicBuildPlanGenerationContext＆LT;＆GT; c__DisplayClass1.b__0（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.BuilderContext.NewBuildUp（NamedTypeBuildKey newBuildKey）\ r \ n at Microsoft.Practices.Unity.ObjectBuilder.NamedTypeDependencyResolverPolicy.Resolve（IBuilderContext 上下文\ r \ n在lambda_method（Closure，IBuilderContext）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicBuildPlanGenerationContext＆LT;＆GT; c__DisplayClass1.b__0（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.BuilderContext.NewBuildUp（NamedTypeBuildKey newBuildKey）\ r \ n at Microsoft.Practices.Unity.ObjectBuilder.NamedTypeDependencyResolverPolicy.Resolve（IBuilderContext 上下文\ r \ n在lambda_method（Closure，IBuilderContext）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicBuildPlanGenerationContext＆LT;＆GT; c__DisplayClass1.b__0（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp（IBuilderContext 上下文）\ r \ n at Microsoft.Practices.Unity.UnityContainer.DoBuildUp（Type t，Object 现有的，字符串名称，IEnumerable`1 resolverOverrides）＆＃34;}}}

Answer 1

Original problem for this was that Unity tried to call the constructor with two parameters:

public AccountController(ApplicationUserManager userManager,
    ISecureDataFormat<AuthenticationTicket> accessTokenFormat)
{
    UserManager = userManager;
    AccessTokenFormat = accessTokenFormat;
}

By adding the following line telling Unity to call the parameterless constructor everything worked again.

container.RegisterType<AccountController>(new InjectionConstructor());

为ASP.NET Web API安装Unity引导程序 - 尝试创建类型为＆＃39; AccountController＆＃39;

1 个答案: