Dependency injection InvalidOperationException:检测到类型为'；Microsoft.AspNetCore.Identity.UserManager

这是在我自定义asp.net核心标识服务以支持基于的多租户之后发生的。我简化了它以满足我的需要

这是我的基本设置

1） 自定义应用程序用户

public class ApplicationUser : IdentityUser<int>, IEntityBase{}

10） 我有一个basecontroller，希望通过构造函数注入

public BaseController(ApplicationDbContext dbContext, 
    UserManager<ApplicationUser> userManager,
    SignInManager<ApplicationUser> signInManager,
    IMessageServices messageServices, ILoggerFactory loggerFactory,
    AppTenant currentTenant, IMapper mapper)
{
    _dbContext = dbContext;
    _signInManager = signInManager;
    _userManager = userManager;
    _messageServices = messageServices;
    _logger = loggerFactory.CreateLogger<BaseController>();
    _currentTenant = currentTenant;
    _mapper = mapper;
}

堆栈跟踪显示了所有框架代码，我发现很难找出循环引用

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有人能给我指出正确的方向吗？

找到了问题。在课堂上

public class ApplicationUserStore : UserStoreMultiTenant<ApplicationUser, ApplicationRole, int>{}

公共类ApplicationUserStore:UserStoreMultiTenant{}

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我在构造函数中请求UserManager，这导致了问题。如果框架显示我的代码中哪一行导致它失败，那就太好了。

这意味着

UserManager

依赖于一个类型，该类型要么直接依赖于

UserManager

，要么依赖于

a=>B，B=>C，C=>a

“如果框架显示我的代码中哪一行导致失败，那就太好了。“如果您直接从代码解析服务，DI容器几乎不可能帮助您解决这一问题；服务定位器反模式使DI容器无法完成其工作，这是服务定位器被称为反模式的众多原因之一。

public class UserStoreMultiTenant<TUser, TRole, TKey> : UserStore<TUser, TRole, ApplicationDbContext, int>{}

public class ApplicationRoleStore : RoleStoreMultiTenant<ApplicationRole>{}

public class ApplicationUserStore : UserStoreMultiTenant<ApplicationUser, ApplicationRole, int>{}

public class ApplicationDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, int>{}

services.AddScoped<IRoleStore<ApplicationRole>, ApplicationRoleStore>();
services.AddScoped<IUserStore<ApplicationUser>, ApplicationUserStore>();
services.AddIdentity<ApplicationUser, ApplicationRole>(o =>
{
o.User.RequireUniqueEmail = true; 
//options code
}).AddUserStore<ApplicationUserStore>()
.AddEntityFrameworkStores<ApplicationDbContext, int>();

//other code
app.UseIdentity();
//other code

public BaseController(ApplicationDbContext dbContext, 
    UserManager<ApplicationUser> userManager,
    SignInManager<ApplicationUser> signInManager,
    IMessageServices messageServices, ILoggerFactory loggerFactory,
    AppTenant currentTenant, IMapper mapper)
{
    _dbContext = dbContext;
    _signInManager = signInManager;
    _userManager = userManager;
    _messageServices = messageServices;
    _logger = loggerFactory.CreateLogger<BaseController>();
    _currentTenant = currentTenant;
    _mapper = mapper;
}

InvalidOperationException: A circular dependency was detected for the service of type 'Microsoft.AspNetCore.Identity.UserManager`1[Registrar.Data.MultitenantIdentity.Models.ApplicationUser]'.

public class ApplicationUserStore : UserStoreMultiTenant<ApplicationUser, ApplicationRole, int>{}