一、创建ClaimsIdentity

ClaimsIdentity（委托基于声明的标识）是在ASP.NET Identity身份认证系统的登录时要用到，我们在UserService中来生成它。

1、打开IBLL项目InterfaceUserService接口，添加接口方法ClaimsIdentity CreateIdentity(User user, string authenticationType);

2、打开BLL项目的UserService类，添加CreateIdentity方法的实现代码

public ClaimsIdentity CreateIdentity(User user, string authenticationType) { ClaimsIdentity _identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie); _identity.AddClaim(new Claim(ClaimTypes.Name, user.UserName)); _identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.UserID.ToString())); _identity.AddClaim(new Claim("http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider", "ASP.NET Identity")); _identity.AddClaim(new Claim("DisplayName", user.DisplayName)); return _identity; }

二、获取AuthenticationManager（认证管理器）

打开Ninesky.Web项目 Member区域的UserController，添加AuthenticationManager属性，在HttpContext.GetOwinContext()中获取这个属性。

#region 属性 private IAuthenticationManager AuthenticationManager { get { return HttpContext.GetOwinContext().Authentication; } } #endregion

三、创建登录视图模型

Member区域的模型文件夹添加视图模型

using System.ComponentModel.DataAnnotations; namespace Ninesky.Web.Areas.Member.Models { /// <summary> /// 登录模型 /// <remarks> /// 创建：2014.02.16 /// </remarks> /// </summary> public class LoginViewModel { /// <summary> /// 用户名 /// </summary> [Required(ErrorMessage = "必填")] [StringLength(20, MinimumLength = 4, ErrorMessage = "{2}到{1}个字符")] [Display(Name = "用户名")] public string UserName { get; set; } /// <summary> /// 密码 /// </summary> [Required(ErrorMessage = "必填")] [Display(Name = "密码")] [StringLength(20, MinimumLength = 6, ErrorMessage = "{2}到{1}个字符")] [DataType(DataType.Password)] public string Password { get; set; } /// <summary> /// 记住我 /// </summary> [Display(Name = "记住我")] public bool RememberMe { get; set; } } }

四、创建登录页面

在UserCcontroller中添加(string returnUrl) action

/// <summary> /// 用户登录 /// </summary> /// <param name="returnUrl">返回Url</param> /// <returns></returns> public ActionResult Login(string returnUrl) { return View(); }

右键添加强类型视图，模型为LoginViewModel

@model Ninesky.Web.Areas.Member.Models.LoginViewModel @{ ViewBag.Title = "会员登录"; } @using (Html.BeginForm()) { @Html.AntiForgeryToken() <div> <h4>会员登录</h4> <hr /> @Html.ValidationSummary(true) <div> @Html.LabelFor(model => model.UserName, new { @class = "control-label col-md-2" }) <div> @Html.EditorFor(model => model.UserName) @Html.ValidationMessageFor(model => model.UserName) </div> </div> <div> @Html.LabelFor(model => model.Password, new { @class = "control-label col-md-2" }) <div> @Html.EditorFor(model => model.Password) @Html.ValidationMessageFor(model => model.Password) </div> </div> <div> @Html.LabelFor(model => model.RememberMe, new { @class = "control-label col-md-2" }) <div> @Html.EditorFor(model => model.RememberMe) @Html.ValidationMessageFor(model => model.RememberMe) </div> </div> <div> <div> <input type="submit" value="登录" /> </div> </div> </div> } @section Scripts { @Scripts.Render("~/bundles/jqueryval") }

效果

五、创建用户登录处理action

在UserCcontroller中添加 httppost类型的 Login action中先用ModelState.IsValid看模型验证是否通过，没通过直接返回，通过则检查用户密码是否正确。用户名密码正确用CreateIdentity方法创建标识，然后用SignOut方法清空Cookies，然后用SignIn登录。

[ValidateAntiForgeryToken] [HttpPost] public ActionResult Login(LoginViewModel loginViewModel) { if(ModelState.IsValid) { var _user = userService.Find(loginViewModel.UserName); if (_user == null) ModelState.AddModelError("UserName", "用户名不存在"); else if (_user.Password == Common.Security.Sha256(loginViewModel.Password)) { var _identity = userService.CreateIdentity(_user, DefaultAuthenticationTypes.ApplicationCookie); AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie); AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = loginViewModel.RememberMe }, _identity); return RedirectToAction("Index", "Home"); } else ModelState.AddModelError("Password", "密码错误"); } return View(); }

六、修改用户注册代码

让用户注册成功后直接登录

七、注销

在UserCcontroller中添加在Logout action

/// <summary> /// 登出 /// </summary> /// <returns></returns> public ActionResult Logout() { AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie); return Redirect(Url.Content("~/")); }

本文已被整理到了《ASP.NET MVC网站开发教程》，欢迎大家学习阅读，更多内容还可以参考ASP.NET MVC5网站开发专题学习。

本文主要是用到了ClaimsIdentity（基于声明的标识）、AuthenticationManager的SignOut、SignIn方法。希望对大家实现用户注册和注销有所帮助。