ClassLibraryWeiBao/weiweixin/UserContext.cs

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using System;
using System.Collections.Generic;
using System.Threading;
using System.Web;
using System.Web.Caching;
using Microsoft.SqlServer.Server;
using WeiWeixiN.Public.Message;

namespace WeiWeixiN.Public.Common
{
    /// <summary>
    /// 以微信公众号toOpenID和用户id为key，处理用户上下文信息。可用来处理如回复数字返回数字对应的内容
    /// </summary>
    public partial class UserContext
    {

        #region 静态成员

        /// <summary>
        /// 生成字典的key值
        /// </summary>
        /// <param name="publicOpenid"></param>
        /// <param name="userid"></param>
        /// <returns></returns>
        private static string KeyCreator(string publicOpenid, string userid)
        {
            return string.Format("{0}{1}", publicOpenid, userid);
        }

        /// <summary>
        /// 用户上下文信息缓存超时时间（分钟）
        /// </summary>
        public static int Timeout = 5;

        /// <summary>
        /// 添加或更新用户关联信息。
        /// <para>添加的信息会在超时后自动移除。超时时间为滑动时间。</para>
        /// </summary>
        /// <param name="toOpenID">微信公众号openid</param>
        /// <param name="userid"></param>
        /// <param name="data"></param>
        public static void Set(string toOpenID, string userid, UserContext data)
        {
            var key = KeyCreator(toOpenID, userid);
            HttpRuntime.Cache.Insert(key, data, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, 0, Timeout, 0));
        }


        /// <summary>
        /// 获取用户关联信息
        /// </summary>
        /// <param name="toOpenID">微信公众号openid</param>
        /// <param name="userid"></param>
        /// <returns></returns>
        public static UserContext Get(string toOpenID, string userid)
        {
            var key = KeyCreator(toOpenID, userid);
            return HttpRuntime.Cache.Get(key) as UserContext;
        }