c# - System.Core.dll 中发生类型为 'System.StackOverflowException' 的未处理异常

Question

在我的 Asp.net MVC 项目中

我有一个初始化 unity-container 的 bootsrapper。

我不知道为什么，但是我明白了

An unhandled exception of type 'System.StackOverflowException' occurred in System.Core.dll

我已经仔细检查过，注册只在我的初始化程序中完成。

所有依赖项仅注入(inject)到 ctors 中。

这可能是什么原因造成的？

    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);

        Initializer.Initialize();
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

它在 BundleConfig.RegisterBundles(BundleTable.Bundles); 之后失败

public static class Initializer
{
    private static bool isInitialize;
    private static readonly object LockObj = new object();
    private static IUnityContainer defaultContainer = new UnityContainer();

    static Initializer()
    {
        Initialize();
    }

    public static void Initialize()
    {
        if (isInitialize)
            return;

        lock (LockObj)
        {
            IUnityContainer container = defaultContainer;

            //registering Unity for MVC
            DependencyResolver.SetResolver(new UnityDependencyResolver(container));

            //registering Unity for web API
            //  GlobalConfiguration.Configuration.DependencyResolver = new Unity.WebApi.UnityDependencyResolver(container);

            #region managers
            container.RegisterType<ISettingsManager, SettingsManager>();

            container.RegisterType<IMamDataManager, MamDataManager>();

            container.RegisterType<IAppsDataManager, AppsDataManager>();
            #endregion

            #region Dals
            container.RegisterType<IDal<ClientService.DAL.EntityFramework.App>, AppsDal>();

            #endregion Dals

            #region cache
            container.RegisterType<ICache<string, ClientService.DAL.EntityFramework.Group>, GroupsCache>(new ContainerControlledLifetimeManager());

            container.RegisterType<ICache<string, ClientService.DAL.EntityFramework.App>, AppsCache>(new ContainerControlledLifetimeManager());

            container.RegisterType<ICache<string, SettingsServiceData>, SettingsServiceDataCache>(new ContainerControlledLifetimeManager());
            #endregion cache

            #region Pollers
            container.RegisterType<IPoller<ClientService.DAL.EntityFramework.Group>, GroupsPoller>(new ContainerControlledLifetimeManager());

            container.RegisterType<IPoller<ClientService.DAL.EntityFramework.App>, AppsPoller>(new ContainerControlledLifetimeManager());

            container.RegisterType<IPoller<SettingsServiceData>, SettingsPoller>(new ContainerControlledLifetimeManager());



            #endregion Pollers


            container.RegisterType<IDefaultConfigurationGroupSingleton, DefaultConfigurationGroupSingleton>(new ContainerControlledLifetimeManager());

            container.RegisterType<IApplicationLogger, Log4NetLogger>();

            if (!isInitialize)
            {
                isInitialize = true;
            }
        }
    }
}

Answer 1

没有提供代码，我猜这是由于循环依赖。另一个可能的原因是您的一个构造函数中有一个不正确的循环。

举个例子，A类需要解析B的一个实例； B 类需要解析 C 类的实例，C 类需要解析 A 的实例。这会导致无限循环:

public class A
{
    public A(B b)
    {
    }
}

public class B
{
    public B(C c)
    {
    }
}

public class C
{
    public C(A a)
    {
    }
}