ASP.NET MVC5网站开发用户登录、注销（五）
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 class="form-horizontal">
<h4>会员登录</h4>
<hr />
@Html.ValidationSummary(true)
<div class="form-group">
@Html.LabelFor(model => model.UserName, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.UserName)
@Html.ValidationMessageFor(model => model.UserName)
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Password, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Password)
@Html.ValidationMessageFor(model => model.Password)
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.RememberMe, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.RememberMe)
@Html.ValidationMessageFor(model => model.RememberMe)
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="登录" class="btn btn-default" />
</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。