无法解析类型 'Microsoft.AspNetCore.Identity.SignInManager' 的服务

Question

当我在ASP.NET Core 3.1中注入SignInManager时，我得到异常消息

无法解析类型为"Microsoft.AspNetCore.Identity.SignInManager"的服务

我的账户管理员

private readonly UserManager<User> userManager;
private readonly SignInManager<User> signInManager;
public AccountController(UserManager<User> _userManager, SignInManager<User> _signInManager)
{
this.userManager = _userManager;
this.signInManager = _signInManager;
}

My Startup.cs

services.AddIdentityCore<User>(opt =>
{
opt.User.RequireUniqueEmail = true;
})
.AddRoles<IdentityRole>()
.AddClaimsPrincipalFactory<UserClaimsPrincipalFactory<User,IdentityRole>>()
.AddEntityFrameworkStores<HISDbContext>()
.AddDefaultTokenProviders();
services.AddAutoMapper(typeof(Startup));
services.AddDbContext<HISDbContext>(options =>            
options.UseSqlServer(Configuration.GetConnectionString("HISConn"))
);
//services.AddScoped<UserManager<User>>();

我的用户类

public class User : IdentityUser
{
//public string FirstName { get; set; }
//public string LastName { get; set; }
}

Answer 1

您应该在IdentityBuilder上使用AddSignInManager扩展名。

假设您已经在项目的其他地方用User替换了IdentityUser，那么您可以像下面这样使用.AddSignInManager<SignInManager<User>>()。

services.AddIdentityCore<User>(opt =>
{
opt.User.RequireUniqueEmail = true;
})
.AddRoles<IdentityRole>()
.AddClaimsPrincipalFactory<UserClaimsPrincipalFactory<User,IdentityRole>>()
.AddSignInManager<SignInManager<User>>()
.AddEntityFrameworkStores<HISDbContext>()
.AddDefaultTokenProviders();

AddSignInManager文档