簡體   English   中英

在Ninject中綁定 - 提供的泛型參數不等於泛型類型定義的arity?

[英]Binding in Ninject - generic arguments provided doesn't equal the arity of the generic type definition?

試圖使用ninject將我的接口綁定到一個具體的類,但我必須遺漏一些東西並且無法使它工作。

System.ArgumentException was unhandled by user code
  HResult=-2147024809
  Message=The number of generic arguments provided doesn't equal the arity of the generic type definition.
Parameter name: instantiation
  Source=mscorlib
  ParamName=instantiation
  StackTrace:
       at System.RuntimeType.MakeGenericType(Type[] instantiation)
       at Ninject.Activation.Providers.StandardProvider.GetImplementationType(Type service) in StandardProvider.cs:line 126
       at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 77
       at Ninject.Activation.Context.Resolve() inContext.cs:line 157
       at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
       at Ninject.Planning.Targets.Target`1.GetValue(Type service, IContext parent) in Target.cs:line 197
       at Ninject.Planning.Targets.Target`1.ResolveWithin(IContext parent) inTarget.cs:line 165
       at Ninject.Activation.Providers.StandardProvider.GetValue(IContext context, ITarget target) in StandardProvider.cs:line 114
       at Ninject.Activation.Providers.StandardProvider.<>c__DisplayClass4.<Create>b__2(ITarget target) in StandardProvider.cs:line 96
       at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
       at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
       at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
       at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 96
       at Ninject.Activation.Context.Resolve() inContext.cs:line 157
       at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
       at Ninject.Planning.Targets.Target`1.GetValue(Type service, IContext parent) inTarget.cs:line 197
       at Ninject.Planning.Targets.Target`1.ResolveWithin(IContext parent) inTarget.cs:line 165
       at Ninject.Activation.Providers.StandardProvider.GetValue(IContext context, ITarget target) in StandardProvider.cs:line 114
       at Ninject.Activation.Providers.StandardProvider.<>c__DisplayClass4.<Create>b__2(ITarget target) in StandardProvider.cs:line 96
       at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
       at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
       at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
       at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 96
       at Ninject.Activation.Context.Resolve() inContext.cs:line 157
       at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
       at PriceCheck.Api.Models.Ninject.NinjectScope.GetService(Type serviceType) in NinjectScope.cs:line 24
       at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator)
       at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
  InnerException: 

在這里崩潰

   public object GetService(Type serviceType)
        {
            IRequest request = resolutionRoot.CreateRequest(serviceType, null, new Parameter[0], true, true);
            return resolutionRoot.Resolve(request).SingleOrDefault();
        }



  public interface IResponseResult
    {
       void AddError(string key, string errorMessage);
       bool IsValid();
       Dictionary<string, string> Errors { get; }

       ResponseBase Status { get; set; }
    }


 public class ResponseResult<T> : IResponseResult
    {
        public ResponseResult()
        {
            Errors = new Dictionary<string, string>();
            Status = new ResponseBase();
        }

        public void AddError(string key, string errorMessage)
        {
            if (!Errors.ContainsKey(key))
            {
                Errors.Add(key, errorMessage);
            }        
        }

        public bool IsValid()
        {
            if (Errors.Count > 0)
            {
                return false;
            }

            return true;
        }

        public Dictionary<string, string> Errors { get; private set; }
        public T Response { get; set; }

        public ResponseBase  Status { get; set; }
    }


Bind(typeof(IResponseResult)).To(typeof(ResponseResult<>));

你並沒有真正為服務提供“構造的通用類型”。
泛型 - 打開和關閉構造的類型
.NET中的“開放通用類型”究竟是什么?

Ninject里面實際上試圖制作一個 - 但是期望你沒有的generic arguments

Type.MakeGenericType(service.GetGenericArguments())  

我不確定你有什么想法 - 以及如何解決這樣的問題。

您可以嘗試ToProvider或設置提供商 - 但您仍然缺少某些東西。

暫無
暫無

聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.

 
粵ICP備18138465號  © 2020-2024 STACKOOM.COM