自己寫的認證程式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using AdminSaltSystem.Models;
using System.Security.Cryptography;
using Microsoft.Owin.Security;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;
using System.Security.Claims;

namespace AdminSaltSystem.Code
{
    public
 
 class adminSigninManager
    {

        private IAuthenticationManager AuthenticationManager { get; }


        SaltSystemEntities db = new SaltSystemEntities();
        public adminSigninManager(IAuthenticationManager authenticationManager) {
            AuthenticationManager = authenticationManager;
        }

        public
 
 SignInStatus Signin(string name, string password, bool RememberMe)
        {


            if (name == null || password == null) return SignInStatus.Failure; 
            //檢測賬戶密碼是否能夠登入
            var md5password = GetMD5(password);
            var @operator = db.Tbl_Operator.Where(m => [email protected]
 
operator.Trim() == name.Trim() && m.opassword== md5password);
            if (@operator.Count() <= 0) return SignInStatus.Failure; 
            var op = @operator.FirstOrDefault();
            SigninSession(op.ID.ToString(),[email protected]operator,op.Tbl_RoleSet.RoleName,op.Tbl_RoleSet.Permit_JSON,RememberMe);

            return SignInStatus.Success;
        }
        private void SigninSession(string id,string name,string role,string permissionlist,bool rememberme) {

            ClaimsIdentity claimsIdentity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie, ClaimTypes.NameIdentifier, ClaimTypes.Role);
            claimsIdentity.AddClaim(new Claim(ClaimTypes.NameIdentifier, id, "http://www.w3.org/2001/XMLSchema#string"));//如果有@Html.AntiForgeryToken()參與下面的ClaimTypes.NameIdentifier必須有
            claimsIdentity.AddClaim(new Claim(ClaimTypes.Name, name, "http://www.w3.org/2001/XMLSchema#string"));//可選 只是如果沒有ClaimTypes.Name 就找不到名字
            claimsIdentity.AddClaim(new Claim("permissionList", permissionlist, "http://www.w3.org/2001/XMLSchema#string"));////可選 同上
            claimsIdentity.AddClaim(new Claim("Role", role, "http://www.w3.org/2001/XMLSchema#string"));////可選 同上
            claimsIdentity.AddClaim(new Claim("http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider", "Custom Identity", "http://www.w3.org/2001/XMLSchema#string"));//如果有@Html.AntiForgeryToken()參與下面的ClaimTypes.NameIdentifier必須有
            AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = rememberme }, claimsIdentity);


        }
        public void SignOut()
        {

            AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);


        }

        #region 幫助程式
        private static string GetMD5(string myString)
        {
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] fromData = System.Text.Encoding.Unicode.GetBytes(myString);
            byte[] targetData = md5.ComputeHash(fromData);
            string byte2String = null;

            for (int i = 0; i < targetData.Length; i++)
            {
                byte2String += targetData[i].ToString("x");
            }

            return byte2String;
        }
        #endregion


    }



}

呼叫方法是在 accountcontroller.cs 裡

        private IAuthenticationManager AuthenticationManager
        {
            get
            {

                return HttpContext.GetOwinContext().Authentication;

            }
        }

//------------------------------------------------------

 AdminSaltSystem.Code.adminSigninManager SM = new AdminSaltSystem.Code.adminSigninManager(AuthenticationManager);
            var result=SM.Signin(model.username,model.password,model.RememberMe);
            switch (result)
            {
                case SignInStatus.Success:
                    return RedirectToLocal("/auth/index");
                case SignInStatus.LockedOut:
                    return View("Lockout");
                case SignInStatus.RequiresVerification:
                    return RedirectToAction("SendCode", new { ReturnUrl = "/auth/index", RememberMe = model.RememberMe });
                case SignInStatus.Failure:
                    ModelState.AddModelError("", "登入失敗。");
                    return View(model);
                default:
                    ModelState.AddModelError("", "無效的登入嘗試。");
                    return View(model);
            }

獲取認證資訊的方法

using System.Security.Principal;
using System.Security.Claims;


//////////////////////////////
///////////////////////

            ClaimsIdentity xxx = new ClaimsIdentity(user.Identity);//user為上下文中中的user型別為IPrincipal 
            var myclaims = xxx.Claims.Where(m => m.Type == "permissionList").First().Value;

            JObject myjobjct = JObject.Parse(myclaims);
            var names = (string)myjobjct["name"];


            foreach (var x in myjobjct)
            {

            }
            var list = new List<string>();
            return list;



}

呼叫方法只要找到上下文裡的user就可以

////////在網上找到的相關資料用於學習、、、、、、、

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.Http.Authentication;
using Microsoft.AspNet.Authorization;
using Microsoft.AspNet.Http.Features.Authentication;
using Microsoft.AspNet.Authentication.Cookies;
using System.Security.Claims;

namespace IdentitySample.Controllers
{
    public class AccountController : Controller
    {
        // Methods
        public IActionResult Login(string returnUrl = null)
        {
            // ViewData
            this.ViewData["ReturnUrl"] = returnUrl;

            // Return
            return View();
        }

        public async Task<IActionResult> PasswordLogin(string userId, string password, string returnUrl = null)
        {
            // Login 
            var existingIdentitySystem = new ExistingIdentitySystem();
            if (existingIdentitySystem.PasswordSignIn(userId, password) == false)
            {
                throw new InvalidOperationException();
            }

            // ExistingUser
            var existingUser = existingIdentitySystem.GetUserById(userId);
            if (existingUser == null) throw new InvalidOperationException();

            // ApplicationUser
            var applicationIdentity = new ClaimsIdentity(IdentityOptions.Current.ApplicationCookieAuthenticationScheme, ClaimTypes.Name, ClaimTypes.Role);
            applicationIdentity.AddClaim(new Claim(ClaimTypes.NameIdentifier, existingUser.Id));
            applicationIdentity.AddClaim(new Claim(ClaimTypes.Name, existingUser.Name));

            var applicationUser = new ClaimsPrincipal(applicationIdentity);

            // Cookie
            await this.HttpContext.Authentication.SignInAsync(IdentityOptions.Current.ApplicationCookieAuthenticationScheme, applicationUser);
            await this.HttpContext.Authentication.SignOutAsync(IdentityOptions.Current.ExternalCookieAuthenticationScheme);

            // Return
            return Redirect(returnUrl);
        }

        public IActionResult ExternalLogin(string externalProvider, string returnUrl = null)
        {
            // AuthenticationProperties
            var authenticationProperties = new AuthenticationProperties();
            authenticationProperties.Items.Add("ExternalProvider", externalProvider);
            authenticationProperties.RedirectUri = Url.Action("ExternalLoginCallback", "Account", new { ReturnUrl = returnUrl });

            // Return
            return new ChallengeResult(externalProvider, authenticationProperties);
        }

        public async Task<IActionResult> ExternalLoginCallback(string returnUrl = null)
        {
            // AuthenticateContext
            var authenticateContext = new AuthenticateContext(IdentityOptions.Current.ExternalCookieAuthenticationScheme);
            await this.HttpContext.Authentication.AuthenticateAsync(authenticateContext);

            // AuthenticateInfo           
            string userId = authenticateContext.Principal.FindFirst(ClaimTypes.Email).Value;
            string externalProvider = authenticateContext.Properties["ExternalProvider"] as string;

            // Login 
            var existingIdentitySystem = new ExistingIdentitySystem();
            if (existingIdentitySystem.ExternalSignIn(userId, externalProvider) == false)
            {
                throw new InvalidOperationException();
            }

            // ExistingUser
            var existingUser = existingIdentitySystem.GetUserById(userId);
            if (existingUser == null) throw new InvalidOperationException();

            // ApplicationUser
            var applicationIdentity = new ClaimsIdentity(IdentityOptions.Current.ApplicationCookieAuthenticationScheme, ClaimTypes.Name, ClaimTypes.Role);
            applicationIdentity.AddClaim(new Claim(ClaimTypes.NameIdentifier, existingUser.Id));
            applicationIdentity.AddClaim(new Claim(ClaimTypes.Name, existingUser.Name));

            var applicationUser = new ClaimsPrincipal(applicationIdentity);

            // Cookie
            await this.HttpContext.Authentication.SignInAsync(IdentityOptions.Current.ApplicationCookieAuthenticationScheme, applicationUser);
            await this.HttpContext.Authentication.SignOutAsync(IdentityOptions.Current.ExternalCookieAuthenticationScheme);

            // Return
            return Redirect(returnUrl);
        }
    }
}