/// <summary>
/// 生成url上面的Ticket,一般只有几秒有效期
/// </summary>
/// <param name="userId"></param>
/// <returns></returns>
public string GenerateTicket(string userId)
{
string sourceString = DateTime.Now.ToString("yyyy-MM-dd") + userId + DateTime.Now.ToString("HH:mm:ss");
string ticket = SymmetricEncryptHelper.AesEncode(sourceString, secretKey);
return(Base64SecureURL.Encode(ticket));
}
/// <summary>
/// 解析url上面的Ticket
/// </summary>
/// <param name="ticket"></param>
/// <returns>用户id,如果过期就返回""</returns>
public string DecodeTicket(string ticket)
{
string sourceString = SymmetricEncryptHelper.AesDecode(Base64SecureURL.Decode(ticket), secretKey);
string userId = sourceString.Substring(10, sourceString.Length - 18);
DateTime ticketDateTime = DateTime.Parse(sourceString.Substring(0, 10) + " " + sourceString.Substring(10 + userId.Length));
var diff = DateTime.Now - ticketDateTime;
if (diff.TotalSeconds > ticketTime)
{
return("");
}
return(userId);
}
