Question

我创建了一个带有单个控制器的基本Web API项目，并尝试使用NuGet的Unity MVC Bootstrapper软件包。不幸的是，当我尝试访问URL http://localhost/api/runtypes时，它会抛出错误

{“消息”：“发生了错误。”，“ExceptionMessage”：“类型 'SE.FlexApplication.WebApi.Controllers.RunTypeController'没有有默认值构造函数 “ ”ExceptionType“： ”System.ArgumentException“， ”堆栈跟踪“：” 在System.Linq.Expressions.Expression.New（Type type）\ r \ n at System.Web.Http.Internal.TypeActivator.Create [TBASE]（类型 instanceType）\ 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）“}

我的控制器类

public class RunTypeController : ApiController
    {
        private readonly IStaticTypesRepository _staticTypesRepository;
        private readonly IDataModelConverter _dataModelConverter;
        private readonly IBusinessModelConverter _businessModelConverter;

        public RunTypeController(IStaticTypesRepository staticTypesRepository, IDataModelConverter dataModelConverter, IBusinessModelConverter businessModelConverter)
        {
            _staticTypesRepository = staticTypesRepository;
            _dataModelConverter = dataModelConverter;
            _businessModelConverter = businessModelConverter;
        } 

        public RunType[] Get()
        {
            return _staticTypesRepository.GetRunTypes().Select(r => _dataModelConverter.Convert(r)).ToArray();
        }

        public HttpResponseMessage Post(RunType type)
        {
            _staticTypesRepository.AddRunType(_businessModelConverter.Convert(type));
            _staticTypesRepository.Save();

            var response = Request.CreateResponse(System.Net.HttpStatusCode.Created, type);

            return response;
        }
    }

Unity激活器

[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(SE.FlexApplication.WebApi.App_Start.UnityWebActivator), "Start")]
[assembly: WebActivatorEx.ApplicationShutdownMethod(typeof(SE.FlexApplication.WebApi.App_Start.UnityWebActivator), "Shutdown")]

namespace SE.FlexApplication.WebApi.App_Start
{
    /// <summary>Provides the bootstrapping for integrating Unity with ASP.NET MVC.</summary>
    public static class UnityWebActivator
    {
        /// <summary>Integrates Unity when the application starts.</summary>
        public static void Start() 
        {
            var container = UnityConfig.GetConfiguredContainer();

            FilterProviders.Providers.Remove(FilterProviders.Providers.OfType<FilterAttributeFilterProvider>().First());
            FilterProviders.Providers.Add(new UnityFilterAttributeFilterProvider(container));

            DependencyResolver.SetResolver(new UnityDependencyResolver(container));
        }

        /// <summary>Disposes the Unity container when the application is shut down.</summary>
        public static void Shutdown()
        {
            var container = UnityConfig.GetConfiguredContainer();
            container.Dispose();
        }
    }
}

Unity Config类

public class UnityConfig
    {
        #region Unity Container
        private static readonly Lazy<IUnityContainer> Container = new Lazy<IUnityContainer>(() =>
        {
            var container = new UnityContainer();
            RegisterTypes(container);
            return container;
        });

        /// <summary>
        /// Gets the configured Unity container.
        /// </summary>
        public static IUnityContainer GetConfiguredContainer()
        {
            return Container.Value;
        }
        #endregion

        /// <summary>Registers the type mappings with the Unity container.</summary>
        /// <param name="container">The unity container to configure.</param>
        /// <remarks>There is no need to register concrete types such as controllers or API controllers (unless you want to 
        /// change the defaults), as Unity allows resolving a concrete type even if it was not previously registered.</remarks>
        public static void RegisterTypes(IUnityContainer container)
        {
            try
            {
                //container.RegisterInstance<IUnitOfWork>(new ProdUnitOfWork());

                container.RegisterType<IEventRepository, EventRepository>();
                container.RegisterType<IModelRepository, ModelRepository>();
                container.RegisterType<ISecurityRepository, SecurityRepository>();
                container.RegisterType<IStaticTypesRepository, StaticTypesRepository>();

                container.RegisterType<IDataModelConverter, DataToModelConverter>();
                container.RegisterType<IBusinessModelConverter, ModelToDataConverter>();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);                
            }
        }
    }

似乎Controller没有意识到它应该使用Unity Dependency解析器进行构造函数注入。我已经按照在线教程的所有步骤进行了操作。我错过了一些基本的东西吗？

无法让Unity Bootstrapper用于MVC工作

0 个答案: