1、在 app.UseMvc 前面加上app.UseCookieAuthentication

app.UseCookieAuthentication(new CookieAuthenticationOptions()            {                AuthenticationScheme = "IdeaCoreUser",                LoginPath = new PathString("/Login/Login/"),                AccessDeniedPath = new PathString("/Account/Forbidden/"),                AutomaticAuthenticate = true,                AutomaticChallenge = true,                CookieDomain=""            });

 2、登录

var claims = new List
     
       {    new Claim("FullName", customer.Username,ClaimValueTypes.String),    new Claim("Role", "注册用户",ClaimValueTypes.String),};var userIdentity = new ClaimsIdentity(claims, "Customer");var userPrincipal = new ClaimsPrincipal(userIdentity);HttpContext.Authentication.SignInAsync("IdeaCoreUser", userPrincipal,    new AuthenticationProperties    {        ExpiresUtc = DateTime.UtcNow.AddMinutes(20),        IsPersistent = false,        AllowRefresh = false    });
     

 3、退出登录

HttpContext.Authentication.SignOutAsync("IdeaCoreUser");

 

4、判断是否已经登录

var bol =HttpContext.User.Identity.IsAuthenticated;

 

5、使用IIdentity拓展方法来获取存的值

public static class IdentityExtension    {        public static string FullName(this IIdentity identity)        {            var claim = ((ClaimsIdentity)identity).FindFirst("FullName");            return (claim != null) ? claim.Value : string.Empty;        }        public static string Role(this IIdentity identity)        {            var claim = ((ClaimsIdentity)identity).FindFirst("Role");            return (claim != null) ? claim.Value : string.Empty;        }    }

 

var fullname = HttpContext.User.Identity.FullName();