我使用城堡温莎进行依赖注入,并尝试注入一些通用类型.但是,当我在容器上调用resolve时,出现以下错误-

Class doesn’t satisfy generic constraints of implementation type.

在此示例中,我现在传递的是简单的Car类型.

public class CreateRequestInstance<T> where T : class, ICreateRequestInstance<T>
{
    private IRequestObject<T> _IRequestObject;

    public CreateRequestInstance(IRequestObject<T> requestObject)
    {
        this._IRequestObject = requestObject;
    }

    public TReturn CreateRequest<TReturn>(string provider, string type, string token, T request,
        string revision, string errorCode, string errorMessage)
    {
        _IRequestObject.Provider = provider;
        _IRequestObject.Type = type;
        _IRequestObject.Token = token;
        _IRequestObject.Request = request;
        _IRequestObject.ErrorCode = errorCode;
        _IRequestObject.ErrorMessage = errorMessage;

        return (TReturn)Convert.ChangeType(_IRequestObject, typeof(IRequestObject<T>));
    }  
}

这是我的安装程序

public void Install(IWindsorContainer container, IConfigurationStore store)
{
    container
        .Register(Component
            .For(typeof(ICreateRequestInstance<>))
            .ImplementedBy(typeof(CreateRequestInstance<>))
            .LifestyleTransient())
         .Register(Component
            .For(typeof(ICreateResponseInstance<>))
            .ImplementedBy(typeof(CreateResponseInstance<>))
            .LifestyleTransient())
        .Register(Component
            .For(typeof(IRequestObject<>))
            .ImplementedBy(typeof(RequestObject<>))
            .LifestyleTransient())
        .Register(Component
            .For(typeof(IResponseObject<>))
            .ImplementedBy(typeof(ResponseObject<>))
            .LifestyleTransient());
}

这是我班的工厂电话

public T GetConcreteClass<T>()
{
    var someClass = container.Resolve<T>();
    return someClass;
}

这是调用代码

var t = factory.GetConcreteClass<ICreateRequestInstance<ICar>>();

var test = t.CreateRequest<ICar>("provide", "test", "test", car, "1", "this is a test", "fred");

任何帮助,将不胜感激

解决方法:

public class CreateRequestInstance<T> where T : class, ICreateRequestInstance<T>

看起来不对.您正在声明一个期望模板参数的类,该参数是实现ICreateRequestInstance< T>的类.这样,除非您的Car类型实现ICreateRequestInstance< T&gt ;,否则您将看到错误. (我对此表示怀疑). 我认为您确实打算：

public class CreateRequestInstance<T> : ICreateRequestInstance<T> where T : class

这是实现ICreateRequestInstance< T>的类.期望模板参数是任何类.