ASP.NET MVC用户登录(Memcache存储用户登录信息)

一、多站点共享用户信息解决方案:

采用分布式缓存Memcache模拟Session进行用户信息信息共享

1、视图部分

@{
    Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <title>XX商城后台管理系统登录</title>
    <script type="text/javascript">
        if (window.parent.window != window) {
            window.top.location.href = "/Home/CheckLogin";
        }
    </script>

    <script src="~/Scripts/jquery-1.8.2.min.js"></script>
    <script src="~/Scripts/jquery.validate.min.js"></script>
    <script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
    <script type="text/javascript">
        function changeCheckCode() {
            $("#img").attr("src", $("#img").attr("src") + 1);
        }

        function afterLogin(data) {
            if (data=="ok") {
                window.location.href = "/Home/Index";
            }
            else
            {
                $("#errorMsg").text(data);
                changeCheckCode();
            }
        }

    </script>

    <style type="text/css">
        * {
            padding: 0;
            margin: 0;
        }

        body {
            text-align: center;
            background: #4974A4;
        }

        #login {
            width: 740px;
            margin: 0 auto;
            font-size: 12px;
        }

        #loginlogo {
            width: 700px;
            height: 100px;
            overflow: hidden;
            background: url('/Content/Images/login/logo.png') no-repeat;
            margin-top: 50px;
        }

        #loginpanel {
            width: 729px;
            position: relative;
            height: 300px;
        }

        .panel-h {
            width: 729px;
            height: 20px;
            background: url('/Content/Images/login/panel-h.gif') no-repeat;
            position: absolute;
            top: 0px;
            left: 0px;
            z-index: 3;
        }

        .panel-f {
            width: 729px;
            height: 13px;
            background: url('/Content/Images/login/panel-f.gif') no-repeat;
            position: absolute;
            bottom: 0px;
            left: 0px;
            z-index: 3;
        }

        .panel-c {
            z-index: 2;
            background: url('/Content/Images/login/panel-c.gif') repeat-y;
            width: 729px;
            height: 300px;
        }

        .panel-c-l {
            position: absolute;
            left: 60px;
            top: 40px;
        }

        .panel-c-r {
            position: absolute;
            right: 20px;
            top: 50px;
            width: 222px;
            line-height: 200%;
            text-align: left;
        }

        .panel-c-l h3 {
            color: #556A85;
            margin-bottom: 10px;
        }

        .panel-c-l td {
            padding: 7px;
        }

        .login-text {
            height: 24px;
            left: 24px;
            border: 1px solid #e9e9e9;
            background: #f9f9f9;
        }

        .login-text-focus {
            border: 1px solid #E6BF73;
        }

        .login-btn {
            width: 114px;
            height: 29px;
            color: #E9FFFF;
            line-height: 29px;
            background: url('/Content/Images/login/login-btn.gif') no-repeat;
            border: none;
            overflow: hidden;
            cursor: pointer;
        }

        #txtUsername, #code, #txtPassword {
            width: 191px;
        }

        #logincopyright {
            text-align: center;
            color: White;
            margin-top: 50px;
        }

        a {
            color: Black;
        }

            a:hover {
                color: Red;
                text-decoration: underline;
            }
    </style>


</head>
<body style="padding: 10px">
    <div id="login">
        <div id="loginlogo">
        </div>
        <div id="loginpanel">
            <div class="panel-h">
            </div>
            <div class="panel-c">
                <div class="panel-c-l">
                    @using (Ajax.BeginForm("CheckLogin", new { }, new AjaxOptions() { OnSuccess = "afterLogin" }, new { id = "loginForm" }))
                    {
                        <table cellpadding="0" cellspacing="0">
                            <tbody>
                                <tr>
                                    <td align="left" colspan="2">
                                        <h3>
                                            请使用OA系统账号登录
                                        </h3>
                                    </td>
                                </tr>
                                <tr>
                                    <td align="right">
                                        账号:
                                    </td>
                                    <td align="left">
                                        <input type="text" name="LoginCode" id="LoginCode" class="login-text" />

                                    </td>
                                </tr>
                                <tr>
                                    <td align="right">
                                        密码:
                                    </td>
                                    <td align="left">
                                        <input type="password" name="LoginPwd" id="LoginPwd" value="123" class="login-text" />
                                    </td>
                                </tr>
                                <tr>
                                    <td>
                                        验证码:
                                    </td>
                                    <td align="left">
                                        <input type="text" class="login-text" id="code" name="vCode" value="1" />
                                    </td>
                                </tr>
                                <tr>
                                    <td></td>
                                    <td>
                                        <img id="img" src="/Login/ValidateCode/?id=1" style="float: left; height: 24px;" />
                                        <div style="float: left; margin-left: 5px; margin-top: 10px;">
                                            <a href="javascript:void(0)" onclick="changeCheckCode();return false;">看不清,换一张</a>
                                        </div>
                                    </td>
                                </tr>
                                <tr>
                                    <td align="center" colspan="2">
                                        <input type="submit" id="btnLogin" value="登录" class="login-btn" /><a href="/Login/FindPwd">找回密码</a>
                                        <input type="checkbox" name="checkMe" value="1" />记住我
                                        <span id="errorMsg"></span>
                                    </td>
                                </tr>
                            </tbody>
                        </table>
                    }
                </div>
                <div class="panel-c-r">
                    <p>
                        请从左侧输入登录账号和密码登录
                    </p>
                    <p>
                        如果遇到系统问题,请联系网络管理员。
                    </p>
                    <p>
                        如果没有账号,请联系网站管理员。
                    </p>
                    <p>
                        ......
                    </p>
                </div>
            </div>
            <div class="panel-f">
            </div>
        </div>
        <div id="logincopyright">
            Copyright ? 2012 Yilian.com
        </div>
    </div>
</body>
</html>

登录页面展示:

 

2、控制器部分

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace WebApp.Controllers
{
    public class LoginController : Controller
    {
        // GET: /Login/
        CZBK.HeiMaOA.IBLL.IUserInfoService userInfoService { get; set; }

        public ActionResult Index()
        {
            return View();
        }

        #region 用户登录
        public ActionResult CheckLogin()
        {
            string validateCode = Session["validateCode"] == null ? string.Empty : Session["validateCode"].ToString();
            if (string.IsNullOrEmpty(validateCode))
            {
                return Content("验证码错误!");
            }

            //清空防止暴力破解
            Session["validateCode"] = null;

            string requestCode = Request["vCode"];
            if (!requestCode.Equals(validateCode, StringComparison.InvariantCultureIgnoreCase))
            {
                return Content("验证码错误!");
            }
            string userName = Request["LoginCode"];
            string userPwd = Request["LoginPwd"];

            //对用户名、密码进行过滤
            var userInfo = userInfoService.LoadEntities(u => u.UName == userName && u.UPwd == userPwd).FirstOrDefault();
            if (userInfo == null)
            {
                return Content("用户名密码错误!");
            }
            else
            {
                //Session["userInfo"] = userInfo; //普通方式

                #region 利用Memcache模拟Session进行共享用户Session信息
                //自己创建的SessionId,作为Memcache的Key
                string sessionId = Guid.NewGuid().ToString();
                //将用户的信息存储到Memcache中
                CZBK.HeiMaOA.Common.MemcacheHelper.Set(sessionId, CZBK.HeiMaOA.Common.SerializerHelper.SerializerToString(userInfo));
                //然后将自创的SessionId以Cookie的形式返回给浏览器,存储到浏览器端的内存中。
                Response.Cookies["sessionId"].Value = sessionId;
                #endregion
               
                return Content("ok");
            }
        }
        #endregion

        #region 展示验证码
        public ActionResult ValidateCode()
        {
            CZBK.HeiMaOA.Common.ValidateCode validateCode = new CZBK.HeiMaOA.Common.ValidateCode();
            string code = validateCode.CreateValidateCode(4);
            Session["validateCode"] = code;
            byte[] buffer = validateCode.CreateValidateGraphic(code);
            return File(buffer, "image/jpeg");
        }
        #endregion
    }
}

 

二、访问页面先验证用户是否登录的解决办法:

1.新建BaseController,让需要验证的继承这个控制器即可:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using CZBK.HeiMaOA.Model;

namespace WebApp.Controllers
{
    public class BaseController : Controller
    {
        public UserInfo LoginUser { get; set; }

        /// <summary>
        /// 执行控制器方法之前先执行该方法
        /// 获取自定义SessionId的值,然后从Memcache中取出
        /// </summary>
        /// <param name="filterContext"></param>
        protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            bool isExt = false;
            if (Request.Cookies["sessionId"] != null)
            {
                //获取自定义的SessionId
                string sessionId = Request.Cookies["sessionId"].Value;
                object obj = CZBK.HeiMaOA.Common.MemcacheHelper.Get(sessionId);
                if (obj != null)
                {
                    LoginUser = CZBK.HeiMaOA.Common.SerializerHelper.DeserializeToObject<UserInfo>(obj.ToString());
                    isExt = true;
                }
            }
            if (!isExt) //用户没登录
            {
                filterContext.HttpContext.Response.Redirect("/Login/Index");
            }
            base.OnActionExecuting(filterContext);
        }

    }
}

2.示例:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace WebApp.Controllers
{
    public class HomeController : BaseController
    {
        //
        // GET: /Home/

        public ActionResult Index()
        {
            if (LoginUser != null)
            {
                ViewData["userName"] = LoginUser.UName;
            }
            return View();
        }

    }
}

 

三、源码下载:

点击下载源码>>

点击下载数据库文件>>

 

posted @ 2015-12-24 17:40  IT浪潮之巅  阅读(...)  评论(...编辑  收藏
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