我主要使用Ninject作为手动绑定,如波纹管.哪个工作正常
kernel.Bind().ToSelf().InRequestScope(); kernel.Bind ().To ();
但是当我尝试使用基于约束的绑定绑定时,有点困惑,什么时候使用?
我浏览了这个Ninject文档但是我找不到很多例子.
根据我的所有Repository类实现IRepository < Model >
.因此,如果我想以传统方式进行绑定,那么下面的代码可以正常工作.
kernel.Bind(x => x .FromAssembliesMatching("*") .SelectAllClasses() .InheritedFrom(typeof(IRepository<>)) .BindDefaultInterface());
但我有点困惑
1.当我改变.FromAssembliesMatching("*")
要.FromThisAssembly()
它不能正常工作,并抛出Error activating ITestRepository
为什么呢?
2.当改变.SelectAllClasses()
为To .SelectAllIncludingAbstractClasses()
时,.FromAssembliesMatching("*")
它的组合工作正常,为什么?
让我解释一下我的代码结构.
IRepository(在DLL 1中)
public interface IRepository{ E Get(); }
RepositoryBase(在DLL 1中)
public abstract class RepositoryBase: IRepository where E : class { public E Get() { return System.Activator.CreateInstance (); // this is just for testing } }
TestRepository(在DLL 2中)
public interface ITestRepository : IRepository{ } public class TestRepository : RepositoryBase , ITestRepository { }
现在使用Controller(在DLL 3中)
private readonly ITestRepository _testRepository; public HomeController(ITestRepository testRepository) { _testRepository = testRepository; }
请告诉我通过传统绑定最好的方法是什么?
注意 DLL 1,2,3表示不同的项目
错误详情
Server Error in '/' Application. Error activating ITestRepository No matching bindings are available, and the type is not self-bindable. Activation path: 2) Injection of dependency ITestRepository into parameter testRepository of constructor of type HomeController 1) Request for HomeController Suggestions: 1) Ensure that you have defined a binding for ITestRepository. 2) If the binding was defined in a module, ensure that the module has been loaded into the kernel. 3) Ensure you have not accidentally created more than one kernel. 4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name. 5) If you are using automatic module loading, ensure the search path and filters are correct. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: Ninject.ActivationException: Error activating ITestRepository No matching bindings are available, and the type is not self-bindable. Activation path: 2) Injection of dependency ITestRepository into parameter testRepository of constructor of type HomeController 1) Request for HomeController Suggestions: 1) Ensure that you have defined a binding for ITestRepository. 2) If the binding was defined in a module, ensure that the module has been loaded into the kernel. 3) Ensure you have not accidentally created more than one kernel. 4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name. 5) If you are using automatic module loading, ensure the search path and filters are correct. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [ActivationException: Error activating ITestRepository No matching bindings are available, and the type is not self-bindable. Activation path: 2) Injection of dependency ITestRepository into parameter testRepository of constructor of type HomeController 1) Request for HomeController Suggestions: 1) Ensure that you have defined a binding for ITestRepository. 2) If the binding was defined in a module, ensure that the module has been loaded into the kernel. 3) Ensure you have not accidentally created more than one kernel. 4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name. 5) If you are using automatic module loading, ensure the search path and filters are correct. ] Ninject.KernelBase.Resolve(IRequest request) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:359 Ninject.Planning.Targets.Target`1.GetValue(Type service, IContext parent) in c:\Projects\Ninject\ninject\src\Ninject\Planning\Targets\Target.cs:197 Ninject.Planning.Targets.Target`1.ResolveWithin(IContext parent) in c:\Projects\Ninject\ninject\src\Ninject\Planning\Targets\Target.cs:165 Ninject.Activation.Providers.StandardProvider.GetValue(IContext context, ITarget target) in c:\Projects\Ninject\ninject\src\Ninject\Activation\Providers\StandardProvider.cs:114 Ninject.Activation.Providers.<>c__DisplayClass4.b__2(ITarget target) in c:\Projects\Ninject\ninject\src\Ninject\Activation\Providers\StandardProvider.cs:96 System.Linq.WhereSelectArrayIterator`2.MoveNext() +66 System.Linq.Buffer`1..ctor(IEnumerable`1 source) +216 System.Linq.Enumerable.ToArray(IEnumerable`1 source) +77 Ninject.Activation.Providers.StandardProvider.Create(IContext context) in c:\Projects\Ninject\ninject\src\Ninject\Activation\Providers\StandardProvider.cs:96 Ninject.Activation.Context.Resolve() in c:\Projects\Ninject\ninject\src\Ninject\Activation\Context.cs:157 Ninject.<>c__DisplayClass10. b__c(IBinding binding) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:386 System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +145 System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +4098209 Ninject.Web.Mvc.NinjectDependencyResolver.GetService(Type serviceType) in c:\Projects\Ninject\ninject.web.mvc\mvc3\src\Ninject.Web.Mvc\NinjectDependencyResolver.cs:56 System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +41 [InvalidOperationException: An error occurred when trying to create a controller of type 'MVCPluginApproach.Controllers.HomeController'. Make sure that the controller has a parameterless public constructor.] System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +179 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) +197 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +49 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() +301 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
**根据我的基本理解......导致错误的多个装配,单个装配的设置.因此,当我尝试绑定它时,.FromThisAssembly()
Ninject无法解决它.这是真的吗?