ASP.NET Core 2.1身份-帐户控制器

Question

我正在检查核心用户身份，并试图了解如何将对象注入到Account Controller构造函数中。调用以下构造函数时，对象已经通过依赖注入实例化了。是在StartUp类“ ConfigureServices” services.AddIdentity本身期间完成的吗？你能解释一下吗？

AccountController

public class AccountController : Controller
    {


        private readonly SignInManager<ApplicationUser> _signInManager;
        private readonly RoleManager<IdentityRole> _roleManager;

        public AccountController(SignInManager<ApplicationUser> signInManager, RoleManager<IdentityRole> roleManager)
        {
            _signInManager = signInManager;
            _roleManager = roleManager;
        }

Startup.cs

public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddIdentity<IdentityUser, IdentityRole>()
                .AddEntityFrameworkStores<AppDbContext>()
                .AddDefaultTokenProviders();

Answer 1

您是正确的，AddIdentity方法负责设置服务。如果您查看the code，则可以自己看到，这是一个小片段：

//etc...
services.TryAddScoped<UserManager<TUser>>();
services.TryAddScoped<SignInManager<TUser>>();
services.TryAddScoped<RoleManager<TRole>>();
//etc...