Question

使用OWIN和AutoFac作为IoC容器，我试图使用依赖注入将HttpContext注入会话状态存储机制，但HttpContext.Session为null。另外，我不确定它是否重要，但是我试图将HttpContextWrapper（HttpContext.Current）注入的类是我作为nuget包构建的外部dll。

Autofac注册，注册我的Autofac模块

 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);
    }

autofac模块的代码：

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();
    }
}

但是，当我查看SessionStateTokenStore时，_httpContext.Session为null。这是我的调试器中的监视窗口的图像。 HttpContext.Session is null

为什么HttpContext.Session为null，我该如何解决？

Answer 1

你能让Autofac解析HttpContextBase，并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();

使用依赖注入时，HttpContext Session为null

1 个答案: