我正在尝试为每个HTTP请求实现实例的生命周期(在Unity DI中)。但是当我尝试注册实例时,我一直收到错误消息:“ PerRequestLifetimeManager只能在HTTP请求的上下文中使用。此错误的可能原因是在非ASP.NET应用程序上使用生命周期管理器,或在与适当的同步上下文无关的线程中使用它。“
我在UnityMvcActivator.cs中注册了UnityPerRequestHttpModule,如下所示
public static void Start()
{
FilterProviders.Providers.Remove(FilterProviders.Providers.OfType<FilterAttributeFilterProvider>().First());
FilterProviders.Providers.Add(new UnityFilterAttributeFilterProvider(UnityConfig.Container));
DependencyResolver.SetResolver(new UnityDependencyResolver(UnityConfig.Container));
// TODO: Uncomment if you want to use PerRequestLifetimeManager
Microsoft.Web.Infrastructure.DynamicModuleHelper.DynamicModuleUtility.RegisterModule(typeof(UnityPerRequestHttpModule));
}
这就是我的UnityConfig.cs的样子
public static void RegisterTypes(IUnityContainer container)
{
// TODO: Register your type's mappings here.
container.RegisterInstance<OITTimeSheetDBContextFactory>(new OITTimeSheetDBContextFactory(), new PerRequestLifetimeManager());
container.RegisterInstance<UserContext>(new UserContext(container.Resolve<OITTimeSheetDBContextFactory>()), new PerRequestLifetimeManager());
}
答案 0 :(得分:2)
使用RegisterType
进行 Per Resolve 实例化>
public static void RegisterTypes(IUnityContainer container)
{
container.RegisterType<OITTimeSheetDBContextFactory>(new PerRequestLifetimeManager());
container.RegisterType<UserContext>(new PerRequestLifetimeManager());
}
RegisterInstance
将有效地定义一个单例,并将始终返回该对象的相同实例