1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using Memcached.ClientLibrary;
 6
 7 namespace WebDemo.Models
 8 {
 9     public static class MemcacheHelper
10     {
11         private static MemcachedClient mc;
12
13         static MemcacheHelper()
14         {
15             //通过客户端来进行memcached的集群配置，在插入数据的时候，使用一致性哈希算法，将对应的value值存入Memcached
16             String[] serverlist = { "127.0.0.1:11211" };
17
18             // 初始化Memcached的服务池
19             SockIOPool pool = SockIOPool.GetInstance("test");
20             //设置服务器列表
21             pool.SetServers(serverlist);
22             //各服务器之间负载均衡的设置比例
23             pool.SetWeights(new int[] { 1 });
24             pool.Initialize();
25             //创建一个Memcached的客户端对象
26             mc = new MemcachedClient();
27             mc.PoolName = "test";
28             //是否启用压缩数据：如果启用了压缩，数据压缩长于门槛的数据将被储存在压缩的形式
29             mc.EnableCompression = false;
30
31         }
32         /// <summary>
33         /// 插入值
34         /// </summary>
35         /// <param name="key">建</param>
36         /// <param name="value">值</param>
37         /// <param name="expiry">过期时间</param>
38         /// <returns></returns>
39         public static bool Set(string key, object value,DateTime expiry){
40             return mc.Set(key, value, expiry);
41         }
42         /// <summary>
43         /// 获取值
44         /// </summary>
45         /// <param name="key"></param>
46         /// <returns></returns>
47         public static object Get(string key)
48         {
49             return mc.Get(key);
50         }
51     }
52 }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using WebDemo.Models;namespace WebDemo.Controllers
{public class BaseController : Controller{//用来保存当前的用户信息public UserInfo LoginUser { get; set; }//通过过滤器来实现每个页面的检查protected override void OnActionExecuting(ActionExecutingContext filterContext){base.OnActionExecuting(filterContext);//从cookie中获取咱们的 登录的sessionIdstring sessionId = Request["sessionId"];//如果sessionid为空值，则跳转到登录页面if (string.IsNullOrEmpty(sessionId)){//return RedirectToAction("Login", "Logon");Response.Redirect("/Logon/Index");}object obj = MemcacheHelper.Get(sessionId);UserInfo user = obj as UserInfo;if (user == null){Response.Redirect("/Logon/Index");}LoginUser = user;//实现session的滑动机制MemcacheHelper.Set(sessionId, user, DateTime.Now.AddMinutes(20));}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Memcached.ClientLibrary;namespace WebDemo.Controllers
{public class MemcachedController : BaseController{//// GET: /Memcached/public ActionResult Index(){//初始化memcached 服务器端集群列表。String[] serverlist = { "127.0.0.1:11211"};// initialize the pool for memcache serversSockIOPool pool = SockIOPool.GetInstance("test");//设置怎么mem池连接点服务器端。
            pool.SetServers(serverlist);pool.Initialize();//创建了一个mem客户端的代理类。var mc = new MemcachedClient();mc.PoolName = "test";mc.EnableCompression = false;//mc.Add("gz1", "我的女神宋智孝");
mc.Set("gz2", "hahaha", DateTime.Now.AddSeconds(15));pool.Shutdown();//关闭连接池return Content("ok");}}
}

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;namespace WebDemo.Models
{public class SchoolDbContext :DbContext{//使用EF的code-first，如果数据库中没有数据名字为MySqlDemo，则调用CreateIfNotExists方法会创建数据库public SchoolDbContext(): base("name=MySqlDemo"){this.Database.CreateIfNotExists();}public virtual DbSet<Student> Student { get; set; }public virtual DbSet<UserInfo> UserInfo { get; set; }}
}

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;namespace WebDemo.Models
{[Serializable]public class Student{[StringLength(32)]public virtual string SName { get; set; }[StringLength(32)]public virtual string Address { get; set; }[Key]public virtual int Id { get; set; }}
}

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Web;namespace WebDemo.Models
{[Serializable]public class UserInfo{public string UName { get; set; }[Required][MaxLength(32)]public string UPwd { get; set; }[Key][DatabaseGenerated(DatabaseGeneratedOption.Identity)]public int UserId { get; set; }}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using WebDemo.Models;namespace WebDemo.Controllers
{public class LogonController : Controller{//// GET: /Logon/public ActionResult Index(){return View();}public ActionResult Login(UserInfo user){//创建一个DbContext对象，这样写不是很合理，先留个问题。（使用EF的code-first时需要注意的点）SchoolDbContext dbContext =new SchoolDbContext();var loginUser = dbContext.UserInfo.Where(u => u.UName.Equals(user.UName) && u.UPwd.Equals(user.UPwd)).FirstOrDefault();if (loginUser == null){return Content("用户名密码错误！");}else{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面去了（一定要把sessionid写到客户端，这样用户在访问其他web资源的时候，就会把cookie中的信息传给服务器，然后通过sessionid的key到Memcached中去取对应的值）Response.Cookies["sessionId"].Value = sessionId.ToString();//再把用户的信息插入到Memcached中MemcacheHelper.Set(sessionId.ToString(), loginUser, DateTime.Now.AddMinutes(20));return Content("ok");}}public ActionResult ValidateCode(){ValidateCodeHelper helper =new ValidateCodeHelper();string strCode = helper.CreateValidateCode(4);Session["validateCode"] = strCode;var byteData = helper.CreateValidateGraphic(strCode);return File(byteData, "image/jpeg");}}
}