Question

我有一个webapi项目，我使用Autofac进行依赖注入。问题是我无法弄清楚如何注册UserManager类。它抛出了错误"{The entity type ApplicationUser is not part of the model for the current context.} System.InvalidOperationException"。

请帮忙。

在AutofacConfig.Configure（）中：

 builder.RegisterType<ApplicationDbContext>().As<IApplicationDbContext>().InstancePerRequest()
 builder.RegisterType<UserManager<ApplicationUser>>().InstancePerRequest();
 builder.RegisterType<UserStore<ApplicationUser>>().As<IUserStore<ApplicationUser>>().InstancePerRequest();

这就是我使用它的方式：

    public class UsersRepository : IUsersRepository<ApplicationUser>
    {
        public IApplicationDbContext DbInstance { get; }
        private UserManager<ApplicationUser> _userManager;
        private IUserStore<ApplicationUser> _userStore;

        public UsersRepository(IApplicationDbContext dbInstance, UserManager<ApplicationUser> userManager, IUserStore<ApplicationUser> userStore)
        {
            DbInstance = dbInstance;
            _userManager = userManager;
            _userStore = userStore;
        }

        public void Create(ApplicationUser user)
        {
            _userManager.Create(user);
            DbInstance.SaveChanges();
        }
    }

IUsersRepository：

public interface IUsersRepository<T> where T : class
{
    IApplicationDbContext DbInstance { get; }

    void Create(T model);
    void Update(string id, T model);
    void Delete(string id);
    List<T> GetAll();
    T Get(string id);
}

我尝试了这个解决方案：https://gist.github.com/danielok/9271691但是在第一次调用用户时遇到了另一个错误webapi controller "ApplicationDbContext is not registered."

消息：

    The requested service 'ToDoApp_Data.DbContext.ApplicationDbContext' has not been registered. To avoid this exception, either register a component to provide 
the service, check for service registration using IsRegistered(), or use the ResolveOptional() method to resolve an optional dependency.

堆栈追踪：

       at Autofac.ResolutionExtensions.ResolveService(IComponentContext context, Service service, IEnumerable`1 parameters)
   at Autofac.ResolutionExtensions.Resolve[TService](IComponentContext context, IEnumerable`1 parameters)
   at Autofac.ResolutionExtensions.Resolve[TService](IComponentContext context)
   at ToDoApp_Api.App_Start.AutofacConfig.<>c.<RegisterOthers>b__4_1(ParameterInfo pi, IComponentContext ctx) in D:\Dev\ToDoApp_Backend\ToDoApp_Api\App_Start\AutofacConfig.cs:line 58
   at Autofac.Core.ResolvedParameter.<>c__DisplayClass3_0.<CanSupplyValue>b__0()
   at Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate()
   at Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters)
   at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters)

P.S。我认为告诉我有其他webapi控制器，我设法使它们与autofac一起使用会很有用，但考虑到在使用DI之前，它实例化如下：UserManager _userManager = new UserManager（new UserStore（new ApplicationDbContext（）））; 。我不知道如何注册。

ASP.NET身份。使用Autofac注册UserManager

0 个答案: