c# – ASP Web Api – IoC – 解析HttpRequestMessage

我也使用Hyprlinkr包(https://github.com/ploeh/Hyprlinkr),因此需要一个HttpRequestMessage的实例注入到我的控制器的一个依赖项中.

我正在跟随Mark Seemann – http://blog.ploeh.dk/2012/04/19/WiringHttpControllerContextWithCastleWindsor.aspx的这篇文章,但是我发现尽管API运行,但是当我打电话时,请求就挂起来了.没有错误信息.就好像它处于无限循环.它挂在我的Custom ControllerActivator中的Resolve的调用上

我想我的一些城堡注册错了.如果我删除上述文章中提到的那些,那么我可以成功地调用API(尽管没有需要解决的依赖关系)

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,控制器只需要一个HttpRequestMessage作为一个ctor参数,并发现：

这样做：

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

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

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

            return controller;

但是,这不是.

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

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

//IHttpControllerActivator
public IHttpController Create(
            HttpRequestMessage request,new { request = request });

            return controller;

即当anon对象具有称为“请求”的属性,并且控制器ctor arg被称为“请求”时.它以某种方式使控制器认为它的请求属性为null.这是什么原因导致我看到的错误：

Cannot reuse an ‘ApiController’ instance. ‘ApiController’ has to be
constructed per incoming message. Check your custom
‘IHttpControllerActivator’ and make sure that it will not manufacture
the same instance.

at System.Web.Http.ApiController.ExecuteAsync(HttpControllerContext
controllerContext,CancellationToken cancellationToken) at
System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncInternal(HttpRequestMessage
request,CancellationToken cancellationToken) at
System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(HttpRequestMessage
request,CancellationToken cancellationToken)

读了这个
How can I enrich object composition in StructureMap without invoking setter injection?

它解释了类似的情况.

当然,hyprlinkr具有称为“request”的HttpRequestMessage的ctor参数,因此我需要使用该属性名称指定anon对象.

有任何想法吗？