/// <summary> /// 获得干扰码字符串 /// </summary> /// <returns>干扰码字符串</returns> public static string GetJammer() { ///干扰码组成(10 位随机字符 + 网站域名 + 10位随机字符) Discuz.Cache.DNTCache cache = Discuz.Cache.DNTCache.GetCacheService(); string str = cache.RetrieveObject("/UI/Jammer") as string; if (str == null) { Random rdm1 = new Random(unchecked ((int)DateTime.Now.Ticks)); StringBuilder sb = new StringBuilder(); for (int i = 0; i < 10; i++) { sb.Append(Convert.ToChar(rdm1.Next(1, 256))); } sb.Append(HttpContext.Current.Request.Url.Authority); for (int i = 0; i < 10; i++) { sb.Append(Convert.ToChar(rdm1.Next(1, 256))); } str = sb.ToString(); str = Utils.HtmlEncode(str); if (sb.Length > 0) { sb.Remove(0, sb.Length); } sb.Append("<span style=\"display:none;font-size:0px\">"); sb.Append(str); sb.Append("</span>"); str = sb.ToString(); Discuz.Cache.ICacheStrategy ics = new ForumCacheStrategy(); ics.TimeOut = 720; cache.LoadCacheStrategy(ics); cache.AddObject("/UI/Jammer", str); cache.LoadDefaultCacheStrategy(); //cache.AddObject("/UI/Jammer", str); } return(str); }