尝试将依赖注入与 CreatePerOwinContext 结合使用时出现 ObjectDisposedException

Question

我正在尝试将 DI 与 OWIN CreatePerOwinContext 扩展一起使用。我也在用OAuthAuthorizationServerProvider。在 OAuthAuthorizationServerProvider 中，我正在尝试使用以下方法获取用户管理器的实例：OAuthGrantResourceOwnerCredentialsContext.OwinContext.GetUserManager.

启动文件：

public void Configuration(IAppBuilder app)
        {
            DataProtectionProvider = app.GetDataProtectionProvider();
            var config = new HttpConfiguration {DependencyResolver = new UnityDependencyResolver(UnityRegistrations.GetConfiguredContainer())};
            WebApiConfig.Register(config);

            //Allow Cross Domain Calls
            app.UseCors(CorsOptions.AllowAll);



            //I verified that my AppUserManager is getting constructed properly
            //var manager = UnityRegistrations.GetConfiguredContainer().Resolve<AppUserManager>();

            app.CreatePerOwinContext(() => UnityRegistrations.GetConfiguredContainer().Resolve<AppUserManager>());


            OAuthOptions = new OAuthAuthorizationServerOptions
            {
                // Point at which the Bearer token middleware will be mounted
                TokenEndpointPath = new PathString("/token"),
                // An implementation of the OAuthAuthorizationServerProvider which the middleware
                // will use for determining whether a user should be authenticated or not
                Provider = new OAuthProvider("self"),
                // How long a bearer token should be valid for
                AccessTokenExpireTimeSpan = TimeSpan.FromHours(24),
                // Allows authentication over HTTP instead of forcing HTTPS
                AllowInsecureHttp = true
            };

            app.UseOAuthBearerTokens(OAuthOptions); 
            app.UseWebApi(config);
        }

这是 GetConfiguredContainer 方法：

private static readonly Lazy<IUnityContainer> Container = new 

    public static IUnityContainer GetConfiguredContainer()
    {
         return Container.Value;
    }

    Lazy<IUnityContainer>(() => {
                var container = new UnityContainer();

                //Registers the Types
                Register(container);

                return container;
            });

在我的 OAuthAuthorizationServerProvider 实现的 GrantResourceOwnerCredentials 中，我尝试获取 AppUserManager:

的实例

public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
        {
            //Inspecting the _userManager I see the ObjectDisposedException
             _userManager = context.OwinContext.GetUserManager<AppUserManager>();


            var user = await _userManager.FindByNameAsync(context.UserName);
        }

我正在尝试使用 Web API 和 Owin 做的事情是否可行？

Answer 1

我犯了一个新手错误。出于某种原因，我在 AppUserManager Unity 注册中添加了一个 HierarchicalLifetimeManager。显然，这是一个错误。它过早地处理了。我的 DbContext 在注册时也有一个 HierarchicalLifetimeManager。欢乐时光！

错误

_unityContainer.RegisterType<AppUserManager>(new HierarchicalLifetimeManager());

正确

_unityContainer.RegisterType<AppUserManager>();

尝试将依赖注入与 CreatePerOwinContext 结合使用时出现 ObjectDisposedException

ObjectDisposedException when trying to use Dependency Injection with CreatePerOwinContext

unity-container

asp.net-web-api

owin