C# 使用http作用域实例的StructureMap Web Api和依赖项注入

正如标题所说，我正在尝试使用StructureMap、Web Api和RavenDB会话的

HybridHttpOrthReadLocalScope

实例使用依赖项注入

为此，我使用的是

IHTTPC控制器激活器

，请参见下面的代码

public class StructureMapControllerActivator : IHttpControllerActivator
{
    private readonly IContainer _container;

    public StructureMapControllerActivator(IContainer container)
    {
        if (container == null) throw new ArgumentNullException("container");
        _container = container;
    }

    public IHttpController Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
    {
        try
        {
            var scopedContainer = _container.GetNestedContainer();
            scopedContainer.Inject(typeof(HttpRequestMessage), request);
            request.RegisterForDispose(scopedContainer);
            return (IHttpController)scopedContainer.GetInstance(controllerType);
        }
        catch (Exception e)
        {
            // TODO : Logging
            throw e;
        }
    }
}

在my global.asax中，我将

IHTTP控制器激活器连接如下：

GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator), new StructureMapControllerActivator(ApplicationContainer));

public MyApiController(IDocumentSession session) {
    _session = session;
}

这是我对StructureMap的配置：

expression.For<IDocumentStore>().Use(documentStore);
expression.For<IDocumentSession>()
    .HybridHttpOrThreadLocalScoped()
    .Use(container =>
    {
        var store = container.GetInstance<IDocumentStore>();                        
        return store.OpenSession();
    });

当我发出第一个
请求时，我得到了
文档会话的一个实例，但是第二个
请求在这一行
return store.OpenSession（）
上抛出一个
HttpError
异常。异常状态表示该对象已被释放，无法使用。这是一个完全例外：

{
  "$type": "System.Web.Http.HttpError, System.Web.Http",
  "message": "An error has occurred.",
  "exceptionMessage": "StructureMap Exception Code:  207\nInternal exception while creating Instance '6d9a72a3-3044-495a-909c-dd9fe7527c80' of PluginType Raven.Client.IDocumentSession, Raven.Client.Lightweight, Version=2.5.0.0, Culture=neutral, PublicKeyToken=37f41c7f99471593.  Check the inner exception for more details.",
  "exceptionType": "StructureMap.StructureMapException",
  "stackTrace": "   at BrickPile.Mvc.StructureMapControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType) in c:\\Users\\maqe\\Documents\\Visual Studio 2013\\Projects\\brickpile\\BrickPile\\Mvc\\StructureMapWebApiDependencyResolver.cs:line 61\r\n   at System.Web.Http.Controllers.HttpControllerDescriptor.CreateController(HttpRequestMessage request)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__0.MoveNext()",
  "innerException": {
    "$type": "System.Web.Http.HttpError, System.Web.Http",
    "message": "An error has occurred.",
    "exceptionMessage": "The document store has already been disposed and cannot be used\r\nObject name: 'EmbeddableDocumentStore'.",
    "exceptionType": "System.ObjectDisposedException",
    "stackTrace": "   at Raven.Client.Document.DocumentStore.OpenSession(OpenSessionOptions options) in c:\\Builds\\RavenDB-Stable\\Raven.Client.Lightweight\\Document\\DocumentStore.cs:line 355\r\n   at BrickPile.DefaultBrickPileBootstrapper.<>c__DisplayClassc.<ConfigureApplicationContainerInternal>b__a(IContext container) in c:\\Users\\maqe\\Documents\\Visual Studio 2013\\Projects\\brickpile\\BrickPile\\DefaultBrickPileBootstrapper.cs:line 294\r\n   at StructureMap.Pipeline.LambdaInstance`1.build(Type pluginType, BuildSession session) in c:\\BuildAgent\\work\\767273992e840853\\src\\StructureMap\\Pipeline\\LambdaInstance.cs:line 25"
  }
}

{
“$type”：“System.Web.Http.HttpError，System.Web.Http”，
“消息”：“发生错误。”，
“exceptionMessage:“StructureMap异常代码：207\n创建插件类型Raven.Client.IDocumentSession、Raven.Client.Lightweight、Version=2.5.0.0、Culture=neutral、PublicKeyToken=37f41c7f99471593的实例“6d9a72a3-3044-495a-909c-dd9fe7527c80”时出现内部异常。有关详细信息，请检查内部异常。”，
“exceptionType”：“StructureMap.StructureMappException”，
“stackTrace”：“at brickfile.Mvc.StructureMapControllerActivator.Create（HttpRequestMessage请求、HttpControllerDescriptor controllerDescriptor、Type controllerType）在c:\\Users\\maqe\\Documents\\Visual Studio 2013\\Projects\\brickfile\\brickfile\\Mvc\\structuremapWebApidenceResolver.cs中：System.Web.Http.Controllers.HttpControllerDescriptor.CreateController（HttpRequestMessage请求）的第61行\r\n处System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncCore（HttpRequestMessage请求，CancellationToken CancellationToken）\r\n位于System.Web.Http.Dispatcher.HttpControllerDispatcher.d_u0.MoveNext（）“，
“内部异常”：{
“$type”：“System.Web.Http.HttpError，System.Web.Http”，
“消息”：“发生错误。”，
“exceptionMessage”：“文档存储已被释放，无法使用\r\n对象名：'EmbeddedBledDocumentStore'。”，
“exceptionType”：“System.ObjectDisposedException”，
c:\\Builds\\RavenDB Stable\\Raven.Client.Lightweight\\Document\\DocumentStore.cs:brickfile.DefaultBrickPileBootstrapper.c\u显示类c.b\u a（IContext容器）中的第355行在c:\\Users\\maqe\\Documents\\Visual Studio 2013\\Projects\\brickfile\\brickfile\\defaultbrickpile bootstrapper.cs:StructureMap.Pipeline.LambdaInstance`1.build（Type pluginType，BuildSession session）中，c:\\BuildAgent\\work\\767273992e840853\\src\\StructureMap\\Pipeline\\LambdaInstance.cs:line 25“
}
}

有人能帮我解决我这里缺少的东西吗

我忘了提到我使用
IHttpModule
来释放和处理
Application\u EndRequest
中的所有http作用域对象。我忘了将
.Singleton（）
添加到
expression.for（）.use（documentStore）；
中。上面的代码经过此修改后可以正常工作。
我添加了
.Singleton（）
to
expression.For（）。使用（documentStore）
现在它似乎与我在问题中发布的代码完全相同。有人能确认解决方案吗？这是正确的。
IDocumentStore
实例应该是一个单例，
IDocumentSession
实例应该是HTTP作用域。默认情况下，StructureMap每次都会创建一个新的类实例。确定要t到
throw e；
？大多数时候，它应该是
throw；
，因为您正在丢失调用堆栈。