【原创】基于Memcached 实现用户登录的Demo(附源码)

一个简单的Memcached在Net中运用的一个demo。主要技术 Dapper+MVC+Memcached+sqlserver,

开发工具为vs2015+Sql

效果图如下:

 

 

登录后

 

解决方案

 主要实现代码

using Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using website.Models;
namespace website.Controllers
{
    public class LoginController : Controller
    {
        // GET: Login
        BLL.Users service = new BLL.Users();
        public ActionResult Index()
        {
            return View();
        }
        [HttpPost]
        public ActionResult Login(string username,string password)
        {
            int count = 0;
            try
            { 
                count=service.Count(" where username='"+username+"' and password='"+password+"' ");
                
                if (count == 0)
                {
                    return Json(new { success = false, msg = "用户名或密码不正确" });
                }
                else
                {


                   var loginUser = service.QueryList(" where username='" + username + "' and password='" + password + "' ").SingleOrDefault();
       

                    Guid sessionId = Guid.NewGuid();//申请了一个模拟的GUID:SessionId

                    //把sessionid写到客户端浏览器里
                    Response.Cookies["sessionId"].Value = sessionId.ToString();

                    //可以缓存model 也可缓存list
                    MemcacheHelper.Set(sessionId.ToString(), loginUser, DateTime.Now.AddMinutes(20));
                    return Json(new { success = true, msg = "登陆成功" });
                }
            }

            catch(Exception ex)
            {
                return Json(new { success = false, msg = ex.Message });

            }

        }

    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Model;
using System.Net.Http;
using website.Models;

namespace website.Controllers
{
    public class BaseController : Controller
    {
        BLL.Users service = new BLL.Users();

        protected string hostUrl = "";
        Users currentuser = new Users();


        public ActionResult Layout()
        {
            Users user = GetCurrentUser();
            ViewData["username"] = user.UserName;
            ViewData["TrueName"] = user.TrueName;
            return View("~/Views/Shared/_MyLayout.cshtml");
           // return View();
        }

        /// <summary>
        /// Action执行前判断
        /// </summary>
        /// <param name="filterContext"></param>
        protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {


            base.OnActionExecuting(filterContext);

            //从cookie中获取登录的sessionId
            string sessionId = Request["sessionId"];
            if (string.IsNullOrEmpty(sessionId))
            {
               
                Response.Redirect("/Login/Index");
            }

            object obj = MemcacheHelper.Get(sessionId);
          
            Users user = obj as Users;
            if (user == null)
            {
                Response.Redirect("/Login/Index");
            }

            currentuser = user;
            MemcacheHelper.Set(sessionId, user, DateTime.Now.AddMinutes(20));

        }
        
        /// <summary>
        /// 判断是否登录
        /// </summary>
        protected bool checkLogin()
        {
            //HttpCookie _cookie = httpContext.Request.Cookies["CookieUser"];
            if (this.Session["userinfo"] == null)
            {
                return false;
            }
            return true;
        }
        /// <summary>
        /// 返回当前登录用户
        /// </summary>
        /// <returns></returns>
        protected Users GetCurrentUser()
        {            
            if (checkLogin())
            {
                currentuser = service.QueryList(" where username='" + this.Session["userinfo"].ToString() + "'").SingleOrDefault(); 
            }
            return currentuser;
        }

        
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Memcached.ClientLibrary;

namespace website.Models
{
    public static class MemcacheHelper
    {
        private static MemcachedClient mc;

        static MemcacheHelper()
        {
            String[] serverlist = { "127.0.0.1:11211" };

            // initialize the pool for memcache servers
            SockIOPool pool = SockIOPool.GetInstance("test");
            pool.SetServers(serverlist);
            pool.Initialize();
            mc = new MemcachedClient();
            mc.PoolName = "test";
            mc.EnableCompression = false;
            
        }

        public static bool Set(string key, object value,DateTime expiry){
            return mc.Set(key, value, expiry);
        }

        public static object Get(string key)
        {
            return mc.Get(key);
        }
    }
}

总结:自己练习的Demo,有很多地方不完善,欢迎指正!!

 https://yunpan.cn/c63VD4ekxn78b  访问密码 2f97

posted @ 2016-07-16 08:45 天使不哭 阅读(...) 评论(...) 编辑 收藏