/// summary>
 /// 用戶登陸模型
 /// /summary>
 public class UserLogin
 {
 /// summary>
 /// 用戶名
 /// /summary>
 [Display(Name = "用戶名", Description = "4-20個(gè)字符。")]
 [Required(ErrorMessage = "×")]
 [StringLength(20, MinimumLength = 4, ErrorMessage = "×")]
 public string UserName { get; set; }
 /// summary>
 /// 密碼
 /// /summary>
 [Display(Name = "密碼", Description = "6-20個(gè)字符。")]
 [Required(ErrorMessage = "×")]
 [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
 [DataType(DataType.Password)]
 public string Password { get; set; }
 /// summary>
 /// 驗(yàn)證碼
 /// /summary>
 [Display(Name = "驗(yàn)證碼", Description = "請(qǐng)輸入圖片中的驗(yàn)證碼。")]
 [Required(ErrorMessage = "×")]
 [StringLength(6, MinimumLength = 6, ErrorMessage = "×")]
 public string VerificationCode { get; set; }

 }

public ActionResult Login()
 {
  return View();
 }
 [HttpPost]
 public ActionResult Login(UserLogin login)
 {
  return View();
 }

[HttpPost]
 public ActionResult Login(UserLogin login)
 {
  //驗(yàn)證驗(yàn)證碼
  if (Session["VerificationCode"] == null || Session["VerificationCode"].ToString() == "")
  {
  Error _e = new Error { Title = "驗(yàn)證碼不存在", Details = "在用戶注冊(cè)時(shí)，服務(wù)器端的驗(yàn)證碼為空，或向服務(wù)器提交的驗(yàn)證碼為空", Cause = "li>你注冊(cè)時(shí)在注冊(cè)頁面停留的時(shí)間過久頁已經(jīng)超時(shí)/li>li>您繞開客戶端驗(yàn)證向服務(wù)器提交數(shù)據(jù)/li>", Solution = "返回a href='" + Url.Action("Register", "User") + "'>注冊(cè)/a>頁面，刷新后重新注冊(cè)" };
  return RedirectToAction("Error", "Prompt", _e);
  }
  else if (Session["VerificationCode"].ToString() != login.VerificationCode.ToUpper())
  {
  ModelState.AddModelError("VerificationCode", "×");
  return View();
  }
  //驗(yàn)證賬號(hào)密碼
  userRsy = new UserRepository();
  if (userRsy.Authentication(login.UserName, Common.Text.Sha256(login.Password)) == 0)
  {
  HttpCookie _cookie = new HttpCookie("User");
  _cookie.Values.Add("UserName", login.UserName);
  _cookie.Values.Add("Password", Common.Text.Sha256(login.Password));
  Response.Cookies.Add(_cookie);
  return RedirectToAction("Default","User");
  }
  else
  {
  ModelState.AddModelError("Message", "登陸失敗！");
  return View();
  }

 }

@model CMS.Models.UserLogin

@{
 ViewBag.Title = "用戶登陸";
 Layout = "~/Views/Shared/_Layout.cshtml";
}
 
div class="banner"> 
 img src="~/Skins/Default/Images/banner.jpg" /> 
/div>
 

@using (Html.BeginForm()) 
{ 
 @Html.ValidationSummary(true)

 div class="form"> 
 dl> 
  dt>用戶登陸/dt> 
  dd> 
  div class="label">@Html.LabelFor(model => model.UserName)：/div> 
  div class="ctrl">@Html.EditorFor(model => model.UserName) 
   @Html.ValidationMessageFor(model => model.UserName) 
   @Html.DisplayDescriptionFor(model => model.UserName) 
  /div> 
  /dd> 
  dd> 
  div class="label">@Html.LabelFor(model => model.Password)：/div> 
  div class="ctrl">@Html.PasswordFor(model => model.Password) 
   @Html.ValidationMessageFor(model => model.Password) 
   @Html.DisplayDescriptionFor(model => model.Password) 
  /div> 
  /dd> 
  dd> 
  div class="label">驗(yàn)證碼：/div> 
  div class="ctrl">
   @Html.TextBoxFor(model => model.VerificationCode) 
   @Html.ValidationMessageFor(model => model.VerificationCode) 
   img id="verificationcode" alt="" src="@Url.Action("VerificationCode", "User")" /> 
   a id="trydifferent" style="cursor: pointer">換一張/a> 
  /div> 
  /dd> 
  dd> 
  div class="label">/div> 
  div class="ctrl"> 
   input type="submit" value="登陸" />@Html.ValidationMessage("Message"); 
  /div> 
  /dd> 
 /dl> 
 div class="clear">/div> 
 /div>
}

script type="text/javascript">
 $("#trydifferent").click(function () { 
 $("#verificationcode").attr("src", "/User/VerificationCode?" + new Date()); 
 })

/script>
@section Scripts { 
 @Scripts.Render("~/bundles/jqueryval") 
}

using Ninesky.Repository;

namespace System.Web.Mvc
{
 /// summary>
 /// 用戶權(quán)限驗(yàn)證
 /// /summary>
 public class UserAuthorizeAttribute :AuthorizeAttribute
 {
 /// summary>
 /// 核心【驗(yàn)證用戶是否登陸】
 /// /summary>
 /// param name="httpContext">/param>
 /// returns>/returns>
 protected override bool AuthorizeCore(HttpContextBase httpContext)
 {
  //檢查Cookies["User"]是否存在
  if (httpContext.Request.Cookies["User"] == null) return false;
  //驗(yàn)證用戶名密碼是否正確
  HttpCookie _cookie = httpContext.Request.Cookies["User"];
  string _userName = _cookie["UserName"];
  string _password = _cookie["Password"];
  httpContext.Response.Write("用戶名:"+_userName);
  if (_userName == "" || _password == "") return false;
  UserRepository _userRsy = new UserRepository();
  if (_userRsy.Authentication(_userName, _password) == 0) return true;
  else return false;
 }
 }
}

/// summary>
 /// 退出系統(tǒng)
 /// /summary>
 /// returns>/returns>
 public ActionResult Logout()
 {
  if (Request.Cookies["User"] != null)
  {
  HttpCookie _cookie = Request.Cookies["User"];
  _cookie.Expires = DateTime.Now.AddHours(-1);
  Response.Cookies.Add(_cookie);
  }
  Notice _n = new Notice { Title = "成功退出", Details = "您已經(jīng)成功退出！", DwellTime = 5, NavigationName="網(wǎng)站首頁", NavigationUrl = Url.Action("Index", "Home") };
  return RedirectToAction("Notice", "Prompt", _n);
 }