/// <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);
}
