HttpContext Session is null when using Dependency Injection
Using OWIN and AutoFac as the IoC container, I am trying to use Dependency Injection to inject HttpContext into a session state storage mechanism, but HttpContext.Session is null. Also, I am not sure if it matters but the class that I am trying to inject HttpContextWrapper(HttpContext.Current) into is an external dll that I have built as a nuget package.
Autofac registration, registers my Autofac module
public static void Register(IAppBuilder app)
{
var builder = new ContainerBuilder();
builder.RegisterControllers(Assembly.GetExecutingAssembly());
builder.RegisterModelBinderProvider();
builder.RegisterFilterProvider();
builder.RegisterModule(new GatewayModule());
var container = builder.Build();
DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
app.UseAutofacMiddleware(container);
}
And the code for the autofac module:
public class GatewayModule : Module
{
protected override void Load(ContainerBuilder builder)
{
builder.RegisterType<SessionStateTokenStore>()
.WithParameter(new TypedParameter(typeof(HttpContextBase), new HttpContextWrapper(HttpContext.Current)))
.As<ITokenStore>().InstancePerRequest();
}
}
However, when I look into my SessionStateTokenStore, _httpContext.Session is null. Here is an image of my watch window in my debugger. HttpContext.Session is null
Why is HttpContext.Session null and how do I fix it?
你可以让Autofac解析HttpContextBase，并且看到它解决了这个问题吗？
// HttpContext
builder.Register(c => new HttpContextWrapper(HttpContext.Current) as HttpContextBase)
.As<HttpContextBase>().InstancePerLifetimeScope();
builder.Register(c => c.Resolve<HttpContextBase>().Request)
.As<HttpRequestBase>().InstancePerLifetimeScope();
builder.Register(c => c.Resolve<HttpContextBase>().Response)
.As<HttpResponseBase>().InstancePerLifetimeScope();
builder.Register(c => c.Resolve<HttpContextBase>().Server)
.As<HttpServerUtilityBase>().InstancePerLifetimeScope();
builder.Register(c => c.Resolve<HttpContextBase>().Session)
.As<HttpSessionStateBase>().InstancePerLifetimeScope();
builder.RegisterType<SessionStateTokenStore>()
.As<ITokenStore>().InstancePerRequest();
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