ASP Web Api - IoC - 解析HttpRequestMessage

Question

我正在尝试使用ASP.NET WebAPI设置Castle Windsor.

我也使用Hyprlinkr包(https://github.com/ploeh/Hyprlinkr),因此需要将HttpRequestMessage的实例注入到我的控制器的一个依赖项中.

我正在关注Mark Seemann的这篇文章 - http://blog.ploeh.dk/2012/04/19/WiringHttpControllerContextWithCastleWindsor.aspx,但我发现虽然API运行,但当我调用它时,请求只是挂起.没有错误消息.就好像它处于无限循环中一样.它停留在我的Custom ControllerActivator调用Resolve上

我想我的一些城堡注册错了.如果我删除上面文章中提到的那些,那么我可以成功调用API(尽管没有我需要解决的依赖项)

有任何想法吗？

代码在下面

//Global.asax
public class WebApiApplication : HttpApplication
{
    private readonly IWindsorContainer container;

    public WebApiApplication()
    {
        container = 
            new WindsorContainer(
                new DefaultKernel(
                    new InlineDependenciesPropagatingDependencyResolver(), 
                    new DefaultProxyFactory()), 
                new DefaultComponentInstaller());

        container.Install(new DependencyInstaller());
    }

    protected void Application_Start()
    {        
        GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator), new WindsorCompositionRoot(this.container));
    }

// installer
public class DependencyInstaller : IWindsorInstaller
{
    public void Install(IWindsorContainer container, IConfigurationStore store)
    {
        container.AddFacility<TypedFactoryFacility>();

        container.Register(
            Component.For<ValuesController>()
                .Named("ValuesController")
                .LifeStyle.PerWebRequest,

            Component.For<IResourceLinker>()
                .ImplementedBy<RouteLinker>()
                .LifeStyle.PerWebRequest,

            Component.For<IResourceModelBuilder>()
                .ImplementedBy<ResourceModelBuilder>()
                .LifeStyle.PerWebRequest,

                Component.For<HttpRequestMessage>()
                .Named("HttpRequestMessage")
                .LifeStyle.PerWebRequest
            );
    }
}

//Activator

public class WindsorCompositionRoot : IHttpControllerActivator
{
    private readonly IWindsorContainer container;

    public WindsorCompositionRoot(IWindsorContainer container)
    {
        this.container = container;
    }

    public IHttpController Create(
        HttpRequestMessage request,
        HttpControllerDescriptor controllerDescriptor,
        Type controllerType)
    {
        var controller = (IHttpController)this.container.Resolve(controllerType, new { request = request });

        request.RegisterForDispose(
            new Release(
                () => this.container.Release(controller)));

        return controller;
    }

// DependencyResolver   
public class InlineDependenciesPropagatingDependencyResolver : DefaultDependencyResolver
{
    protected override CreationContext RebuildContextForParameter(CreationContext current, Type parameterType)
    {
        if (parameterType.ContainsGenericParameters)
        {
            return current;
        }

        return new CreationContext(parameterType, current, true);
    }
}

编辑***********附加信息****************

所以我设置了一个场景,控制器只需要将HttpRequestMessage作为ctor参数,然后找到:

这有效:

//controller
public class ValuesController : ApiController
    {
        private readonly HttpRequestMessage _httpReq;

        public ValuesController(HttpRequestMessage httpReq)
        {
            _httpReq = httpReq;
        }
//IHttpControllerActivator
public IHttpController Create(
            HttpRequestMessage httpRequest,
            HttpControllerDescriptor controllerDescriptor,
            Type controllerType)
        {

            var controller = (IHttpController)this.container.Resolve(
                controllerType, new { httpReq = httpRequest });

            return controller;

但是,这不.

//controller
public class ValuesController : ApiController
    {
        private readonly HttpRequestMessage _httpReq;

        public ValuesController(HttpRequestMessage request)
        {
            _httpReq = request;
        }

//IHttpControllerActivator
public IHttpController Create(
            HttpRequestMessage request,
            HttpControllerDescriptor controllerDescriptor,
            Type controllerType)
        {

            var controller = (IHttpController)this.container.Resolve(
                controllerType, new { request = request });

            return controller;

即,当anon对象具有称为"request"的属性并且控制器ctor arg被称为"request"时.它以某种方式使控制器认为它的请求属性为空.这是导致我看到错误的原因:

无法重用'ApiController'实例.每个传入消息都必须构造'ApiController'.检查您的自定义'IHttpControllerActivator'并确保它不会生成相同的实例.

在System.Web.Http.ApiController.ExecuteAsync(HttpControllerContext controllerContext,的CancellationToken的CancellationToken)在System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncInternal(HttpRequestMessage请求,的CancellationToken的CancellationToken)在System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(HttpRequestMessage请求,取消语音取消语句)

阅读本文 如何在不调用setter注入的情况下丰富StructureMap中的对象组合？

它解释了类似的情况.

当然,hyprlinkr有一个名为"request"的HttpRequestMessage的ctor arg,所以我确实需要用该属性名指定anon对象.

有任何想法吗？

Answer 1

这是一个适合我的组合根:

public class WindsorCompositionRoot : IHttpControllerActivator
{
    private readonly IWindsorContainer container;

    public WindsorCompositionRoot(IWindsorContainer container)
    {
        this.container = container;
    }

    public IHttpController Create(
        HttpRequestMessage request,
        HttpControllerDescriptor controllerDescriptor,
        Type controllerType)
    {
        var controller = (IHttpController)this.container.Resolve(
            controllerType,
            new
            {
                request = request
            });

        request.RegisterForDispose(
            new Release(
                () => this.container.Release(controller)));
        return controller;
    }

    private class Release : IDisposable
    {
        private readonly Action release;

        public Release(Action release)
        {
            this.release = release;
        }

        public void Dispose()
        {
            this.release();
        }
    }
}

这是我创建容器的方法:

this.container =
    new WindsorContainer(
        new DefaultKernel(
            new InlineDependenciesPropagatingDependencyResolver(),
            new DefaultProxyFactory()),
        new DefaultComponentInstaller())
        .Install(new MyWindsorInstaller());

这是InlineDependenciesPropagatingDependencyResolver:

public class InlineDependenciesPropagatingDependencyResolver : 
    DefaultDependencyResolver
{
    protected override CreationContext RebuildContextForParameter(
        CreationContext current,
        Type parameterType)
    {
        if (parameterType.ContainsGenericParameters)
        {
            return current;
        }

        return new CreationContext(parameterType, current, true);
    }
}

最后,这是我如何注册RouteLinker:

container.Register(Component
    .For<RouteLinker, IResourceLinker>()
    .LifestyleTransient());

需要注意的一点是,ApiController基类有一个名为RequestHttpRequestMessage类型的公共属性.正如我的书的第10.4.3节所解释的那样,Windsor将尝试为每个可写属性分配一个值,如果它具有匹配的组件 - 并且该匹配不区分大小写.

当你传递一个名为requestResolve方法的HttpRequestMessage时,这正是发生的事情,所以你需要告诉Castle Windsor它应该放弃ApiControllers的Property Injection.以下是我在基于会议的注册中的表达方式:

container.Register(Classes
    .FromThisAssembly()
    .BasedOn<IHttpController>()
    .ConfigureFor<ApiController>(c => c.Properties(pi => false))
    .LifestyleTransient());