如何从Global.asax获取OwinContext？

Question

我正在尝试设置我的依赖注入，我需要从ASP.NET身份注入IAuthenticationManager到OwinContext 。

为此，我来自我的Global.asax -> ServiceConfig.Configure()运行：

 container.Register(() => HttpContext.Current.GetOwinContext().Authentication);

但是当我运行我的应用程序时，我收到此消息：

在上下文中找不到owin.Environment项

为什么这个HttpContext.Current.GetOwinContext（）不能从Global.asax获得？

Startup.cs

[assembly: OwinStartupAttribute(typeof(MyApp.Web.Startup))]
namespace Speedop.Web
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }
    }
}

Startup.Auth.cs

public partial class Startup
{
    public void ConfigureAuth(IAppBuilder app)
    {
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login"),
            Provider = new CookieAuthenticationProvider
            {
                OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<UserManager<User, int>, User, int>(
                    validateInterval: TimeSpan.FromMinutes(30),
                    regenerateIdentityCallback: (manager, user) => manager.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie),
                    getUserIdCallback: (id) => (Int32.Parse(id.GetUserId()))
                    )
            }
        });

        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
    }
}

Answer 1

我修改了以下内容：

container.RegisterPerWebRequest(() =>
{
    if (HttpContext.Current != null && HttpContext.Current.Items["owin.Environment"] == null && container.IsVerifying())
    {
        return new OwinContext().Authentication;
    }
    return HttpContext.Current.GetOwinContext().Authentication;

});

看起来像启动时没有OwnContext，所以我会等待它并在它出现时注入它。 请注意， container.IsVerifying()存在于SimpleInjector.Advanced