两种微信缓存方式(7200s)

第一种是MemoryCache(缓存的分享票据)

public static string Getjsapi_ticket(string AppID, string AppSecret)        {            string tt = "";            string ticket = AddOrGetExisting
     
      ("ticket", delegate()            {                string strUrl = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", AppID, AppSecret);                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);                WebResponse response = request.GetResponse();                Stream resStream = response.GetResponseStream();                StreamReader sr = new StreamReader(resStream);                string result = sr.ReadToEnd();                string regex = "\"access_token\":\"(?
      
       .*?)\"";                Match mt = Regex.Match(result, regex);                string token = "";                if (mt.Success)                {                    token = mt.Groups["token"].Value;                }                string jsapi_url = string.Format("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={0}&type=jsapi", token);                HttpWebRequest jsapi_request = (HttpWebRequest)WebRequest.Create(jsapi_url);                WebResponse jsapi_response = jsapi_request.GetResponse();                Stream jsapi_resStream = jsapi_response.GetResponseStream();                StreamReader jsapi_sr = new StreamReader(jsapi_resStream);                string jsapi_result = jsapi_sr.ReadToEnd();                string temp = jsapi_result.Split(',')[2];                string jsapi_tic = temp.Split(':')[1];                jsapi_tic = jsapi_tic.Substring(1, jsapi_tic.Length - 2);                return jsapi_tic;            },                       new TimeSpan(0, 0, 7000)//7000秒过期                   );            return ticket;        }        static readonly ObjectCache cache = MemoryCache.Default;        public static T AddOrGetExisting
       
        (string key, Func
        
          createNew, TimeSpan cacheDuration)        {            return AddOrGetExisting
         
          (key, new TimeSpan(0, 0, 7000), createNew);        }        public static T AddOrGetExisting
          
           (string key, TimeSpan cacheDuration, Func
           
             createNew) { if (key == null) throw new ArgumentNullException("key"); if (createNew == null) throw new ArgumentNullException("createNew"); if (!cache.Contains(key)) { cache.Add(key, createNew(), DateTime.Now.Add(cacheDuration)); } return (T)cache[key]; }
           
          
         
        
       
      
     

　　第二种HttpContext.Current.Cache（缓存的access_token）

/// 
/// 获取公众号的ACCESS_TOKEN/// 
/// 
     
      返回操作凭据
     public string GetAccessToken(){　　if (HttpContext.Current.Cache["access_token"] == null)   {   　　string para = string.Format("grant_type=client_credential&appid={0}&secret={1}", AppID, AppSecret);   　　string results = SendHTTPRequest("POST", "https://api.weixin.qq.com/cgi-bin/token", para);   　　JObject obj = (JObject)JsonConvert.DeserializeObject(results);   　　//设置access_token的过期   　　Cache cache = HttpContext.Current.Cache;   　　cache.Insert("access_token", obj["access_token"].ToString(), null, DateTime.Now.AddSeconds(7000),　　　　　　System.Web.Caching.Cache.NoSlidingExpiration);   　　return HttpContext.Current.Cache["access_token"].ToString();   }   else   {   　　return HttpContext.Current.Cache["access_token"].ToString();   }}