C# 在my owin授权提供程序的GrantResourceOwnerCredentials中设置自定义主体后，HttpContext.Current.User.Identity.Name为null

以下是我的GrantResourceOwnerCredentials方法：

public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { "*" });

        AccountModels.UserProfile user = ApplicationUserManager.UserLogin(new AccountModels.LoginModel { UserName = context.UserName , Password = context.Password, RememberMe= false });

        if (user == null)
        {
            context.SetError("invalid_grant", "The user name or password is incorrect.");
            return;
        }
        else
        {
            if (user.IsLoggedIn = false)
            {
                context.SetError("invalid_grant", "The user is no longer active. Please contact support for account activation");
                return;
            }
            else
            {
                var identity = new ClaimsIdentity(context.Options.AuthenticationType);
                identity.AddClaim(new Claim(ClaimTypes.Name, context.UserName));
                identity.AddClaim(new Claim(ClaimTypes.Role, user.UserRole));


                var roles = new string[] {user.UserRole};

                AuthenticationProperties properties = CreateProperties(user.UserName, roles, user.IsEmilConfirmed);
                AuthenticationTicket ticket = new AuthenticationTicket(identity, properties);

                context.Validated(ticket);

                MyCustomPrincipal newUser = new MyCustomPrincipal(user.UserName);
                newUser.Id = user.UserID;
                newUser.Email = user.UserName;
                newUser.Role = user.UserRole;

                SetPrincipal(newUser);
                context.Request.Context.Authentication.SignIn(identity);

            }
        }
    }

我必须实现一个自定义的登录逻辑来支持我的旧数据库模式，登录后我想在httpcontext.current.user中设置刚刚登录的用户

以下是我的主要方法：

private static void SetPrincipal(IPrincipal principal)
    {
        Thread.CurrentPrincipal = principal;
        if (HttpContext.Current != null)
        {
            HttpContext.Current.User = principal;
        }
    }

---

授权后，每当我在控制器中调用HttpContext.Current.User.Identity.Name时，我都会得到null值。我错过了什么？有人能告诉我一些想法吗

尝试在控制器中使用

用户

对象：

var principal = User as ClaimsPrincipal;

---

旁注：如果您使用OWIN主机，则在GrantResourceOwnerCredentials中不需要调用

SetPrincipal

。

请解释启动时不调用SetPrincipal是什么意思。Setprincipal是在GrantResourceOwnerCredentials方法中调用的。我的错误，很可能与您的问题无关，或者我的措辞也不正确。我改正了。