[英]API Controller added to ASP.NET MVC web application doesn't seem to work
[英]ASP.Net MVC 4 Web API controller doesn't work with Unity.WebApi
我的 ASP.Net MVC 4 Web API 控制器不适用于 Unity.WebApi。 在同一个项目中,简单的控制器与 Unity.Mvc3 一起正常工作。 但是当我运行从 ApiController 派生的 Web API 控制器时,我收到一条消息:
{"$id":"1","Message":"发生错误。","ExceptionMessage":"Type 'ElectricTests.Controllers.Api.DocumentsController' 没有默认构造函数","ExceptionType":" System.ArgumentException","StackTrace":" 在 System.Linq.Expressions.Expression.New(Type type)\\r\\n 在 System.Web.Http.Internal.TypeActivator.Create[TBase](Type instanceType)\\r\\n n 在 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator)\\r\\n 在 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType )"}
我的 ApiController:
public class DocumentsController : ApiController
{
private readonly IDocumentsRepository _repository;
public DocumentsController(IDocumentsRepository repository) {
_repository = repository;
}
public IEnumerable<FormattedDocument> GetFormattedDocuments()
{
return _repository.GetAllFormattedDocuments();
}
...
Bootstrapper.cs:
public static class Bootstrapper {
public static void Initialise() {
IUnityContainer container = BuildUnityContainer();
DependencyResolver.SetResolver(new UnityDependencyResolver(container));
}
private static IUnityContainer BuildUnityContainer() {
var container = new UnityContainer();
// register all your components with the container here
// it is NOT necessary to register your controllers
// e.g. container.RegisterType<ITestService, TestService>();
container.RegisterType<IDocumentsRepository, DocumentsRepository>();
container.RegisterType<IQuestionsRepository, QuestionsRepository>();
container.RegisterType<ITestRepository, TestsRepository>();
return container;
}
}
我的错误在哪里?
Controller 和 ApiController 的处理是不同的,因为它们有完全不同的基类:
我将 Unity.MVC4 库用于控制器 DI ( http://www.nuget.org/packages/Unity.MVC4/ )
Install-Package Unity.MVC4
和用于 DI 的 Unity.WebAPI ( http://www.nuget.org/packages/Unity.WebAPI/ )
Install-Package Unity.WebAPI
您的引导程序应该是两者的组合:
DependencyResolver.SetResolver(new Unity.Mvc4.UnityDependencyResolver(container));
GlobalConfiguration.Configuration.DependencyResolver = new Unity.WebApi.UnityDependencyResolver(container);
注意我还必须添加一些注册才能使帮助页面正常工作
container.RegisterInstance(typeof (HttpConfiguration), GlobalConfiguration.Configuration);
作为 Unity.MVC4 的所有者,我正在考虑在我们的库中实现 WebApi。
当您为 ASP.NET Web API 安装 Unity 时,它会执行所有操作,除了将以下行添加到您的 Global.asax
Bootstrapper.Initialise();
所以你需要将它添加到你的 Application_Start 方法中:
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
Bootstrapper.Initialise();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
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