当前类型IUserStore <ApplicationUser>和DbConnection分别是接口和抽象类,不能构造

Question

如果我冲浪,http://localhost:58472/Account/Register我就有这个例外

System.InvalidOperationException:当前类型IUserStore<ApplicationUser>是一个接口,无法构造.你错过了类型映射吗？

这是我的代码:

public class ApplicationUserManager : UserManager<ApplicationUser>
{
    public ApplicationUserManager(IUserStore<ApplicationUser> store)
        : base(store)
    { }

    public static ApplicationUserManager Create(
        IdentityFactoryOptions<ApplicationUserManager> options, 
        IOwinContext context) 
    {
        var manager = new ApplicationUserManager(
            new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>())
        );

        // other code
        return manager;   
    }
}

这里是控制器的代码:

[Authorize]
public class AccountController : Controller
{
    private ApplicationSignInManager _signInManager;
    private ApplicationUserManager _userManager;

    public AccountController()
    {
    }

    public AccountController(
        ApplicationUserManager userManager,
        ApplicationSignInManager signInManager)
    {
        UserManager = userManager;
        SignInManager = signInManager;
    }

    public ApplicationSignInManager SignInManager
    {
        get
        {
            return _signInManager ?? 
                HttpContext.GetOwinContext().Get<ApplicationSignInManager>();
        }
        private set
        {
            _signInManager = value;
        }
    }

    public ApplicationUserManager UserManager
    {
        get
        {
            return _userManager ?? 
                HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
        }
        private set
        {
            _userManager = value;
        }
    }

    [HttpGet]
    [AllowAnonymous]
    public ActionResult Login(string returnUrl)
    {
        ViewBag.ReturnUrl = returnUrl;
        return View();
    }
}

所以你可以看看你是否阅读了我的代码,当你创建一个新的MVC项目时,我没有改变原始代码,但我得到了上面的错误.我错了什么？

我已经很好地创建了一个新的控制器,其名称ProfileController与我的第二个代码块中的代码相同,但没有,ApplicationSignInManager因为我不需要它.

我还使用Unity容器来注册和管理服务.这是代码:

public static class UnityConfig
{
    public static void RegisterComponents()
    {
        var container = new UnityContainer();

        container.RegisterType<IGenericRepo<Category>, GenericRepo<Category>>();
        container.RegisterType<ICategoryService, CategoryService>();
        //container.RegisterType<IUser, ApplicationUser>(); 

        DependencyResolver.SetResolver(new UnityDependencyResolver(container));
    }
}

如果我在上面的代码中取消注释行,则在运行站点时没有任何区别.

---

更新:

通过@Jay的评论,我在Unity管理器中添加了这段代码.

container.RegisterType<IUserStore<ApplicationUser>, UserStore<ApplicationUser>>();

现在我有这个例外:

System.InvalidOperationException:当前类型,System.Data.Common.DbConnection是一个抽象类,无法构造.你错过了类型映射吗？

以下是堆栈跟踪中的一些信息:

1. InvalidOperationException

   尝试创建类型的控制器时发生错误AccountController.确保控制器具有无参数的公共构造函数.

   是的,我有一个没有参数的公共构造函数.

2. ResolutionFailedException

   依赖项的解析失败,type = "AccountController",name = "(none)".

所以我在Unity管理器中添加了这一行:

container.RegisterType<IDbConnection, DbConnection>();

但我仍然有同样的例外.

目前的类型,System.Data.Common.DbConnection......

---

更新:

通过@RandyLevy的评论我试过这个,帮助这个问题配置Unity DI for ASP.NET Identity:

1. 将此添加到AccountController:

   // two fields added
   private readonly UserManager<ApplicationUser> _userManager;
   private readonly RoleManager<IdentityRole> _roleManager;
   
   // constructor added
   public AccountController(
       IUserStore<ApplicationUser> userStore, 
       IRoleStore<IdentityRole> roleStore, 
       ApplicationSignInManager signInManager)
   {
       _userManager = new UserManager<ApplicationUser>(userStore);
       _roleManager = new RoleManager<IdentityRole>(roleStore);
       SignInManager = signInManager; // I need this
   }
   
   public ApplicationSignInManager SignInManager // I need this
   {
       get
       {
           return _signInManager ?? 
               HttpContext.GetOwinContext().Get<ApplicationSignInManager>();
       }
       private set
       {
           _signInManager = value;
       }
   }
   
   public UserManager<ApplicationUser> UserManager // replace by other property 
                                                   // type of ApplicationUserManager 
   {
       get
       {
           return _userManager ?? 
               HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
       }
       //private set // comment this because _usermanager is readonly.
       //{
       //    _userManager = value;
       //}
   }
   
   //public ApplicationUserManager UserManager // replaced by the property type of 
   //                                          // UserManager<ApplicationUser>
   //{
   //    get
   //    {
   //        return _userManager ?? 
   //            HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
   //    }
   //    private set
   //    {
   //        _userManager = value;
   //    }
   //}
   

2. 将其添加到UnityManager中:

   InjectionConstructor accountInjectionConstructor = 
       new InjectionConstructor(new ApplicationDbContext());
   
   container.RegisterType<AccountController>();
   container.RegisterType<IController, Controller>();
   
   container.RegisterType
       <IRoleStore<IdentityRole>, RoleStore<IdentityRole>>
       (accountInjectionConstructor); // on this line
   
   container.RegisterType
       <IUserStore<ApplicationUser>, UserStore<ApplicationUser>>
       (accountInjectionConstructor);
   

但是我在注释的行上遇到了这个错误(没有运行时异常):

该类型RoleStore<IdentityRole>不能用作TTo以下泛型类型或方法中的类型参数:

UnityContainerExtensions.RegisterType<TFrom, TTo>
    (IUnityContainer, params InjectionMember[])

没有来自隐式引用转换RoleStore<IdentityRole>到IRoleStore<IdentityRole>.

Answer 1

最后我找到了解决问题的方法.我已将此代码添加到Unity管理器中.

container.RegisterType<DbContext, ApplicationDbContext>(new HierarchicalLifetimeManager());
container.RegisterType<UserManager<ApplicationUser>>(new HierarchicalLifetimeManager());
container.RegisterType<IUserStore<ApplicationUser>, UserStore<ApplicationUser>>(new HierarchicalLifetimeManager());
container.RegisterType<AccountController>(new InjectionConstructor());