/// <summary>
/// 构造函数
/// </summary>
public SerialIdDetailResultData(FixedPrefix fixedPrefix, CustomPrefix customPrefix, DateTime createDateTime, string ip, int random)
{
FixedPrefix = fixedPrefix;
CustomPrefix = customPrefix;
CreateDateTime = createDateTime;
Ip = ip;
Random = random;
}
/// <summary>
/// 会员卡生成规则
/// </summary>
/// <param name="fixedPrefix"></param>
/// <param name="customPrefix"></param>
/// <returns></returns>
public static SerialIdResultData GetCard(FixedPrefix fixedPrefix, CustomPrefix customPrefix)
{
const string zero = "0";
const string defaultLocalIp = "00000000";
lock (LockObj)
{
if (!_beginTimespan.HasValue)//IIS被回收或者首次使用
{
_beginTimespan = Helper.ConvertDateTimeInt(DateTime.Now);
}
var successSerialId = string.Empty;
while (string.IsNullOrEmpty(successSerialId))
{
//获取当前时间戳
var timestamp = Helper.ConvertDateTimeInt(DateTime.Now);
//判断首次使用的时间与当前时间
if ((timestamp - _beginTimespan.Value).Equals(0))
{
Thread.Sleep(10);
continue;
}
//获取固定前缀
var fixPrefix = Helper.GetEnumDesc(fixedPrefix);
//用户自定义前缀为空，则为A
//获取用户自定义前缀
var cpx = Helper.GetEnumDesc(customPrefix);
//判断本机IP是否为空，为空则获取
if (string.IsNullOrEmpty(_localIp))
{
_localIp = GetIpAddress();
}
//获取不到本机IP，则用默认值代替
if (string.IsNullOrEmpty(_localIp))
{
_localIp = defaultLocalIp;
}
//构造随机种子
var seed = Guid.NewGuid().GetHashCode();
var random = new Random(seed);
//随机订单号的最后3位
var timefix = random.Next(0, 99).ToString(CultureInfo.InvariantCulture);
while (timefix.Length < 2)//不足3位前面补0
{
timefix = zero + timefix;
}
//构建订单号
//转换时间戳为16进制，并替换E为U
var time = Convert.ToString(timestamp, 16).ToUpper().Replace('E', 'U');
//IP替换E为U
var localIp = _localIp.ToUpper().Replace('E', 'U').Substring(0, 4);
var serialId = fixPrefix + cpx + time + localIp + timefix;
serialId = serialId.ToLower();
//判断是否重复
var isDone = SystemCacheHelper.TicketStore(serialId);
successSerialId = isDone ? serialId : string.Empty;
}
//转为小写
successSerialId = successSerialId.ToLower();
var resultData = new SerialIdResultData
{
ResultCode = string.IsNullOrEmpty(_localIp) ? ResultCode.Error : ResultCode.Success,
SerialId = successSerialId
};
return(resultData);
}
}
