53 lines
1.5 KiB
C#
53 lines
1.5 KiB
C#
namespace WmsMobileServe.Utils;
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/// <summary>
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/// 唯一识别号工具
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/// </summary>
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public class UUIDUtils
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{
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const string sysId = "009"; // 系统的编号
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#region 返回一个 UUID，以时间戳形式
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private static readonly object getNewUUIDLock2 = new();
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private static string lastUUID2 = string.Empty;
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private static string lasTimeTick2 = DateTime.Now.ToString("yyyyMMddHHmmssfff");
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private static ushort sortUUID2 = 0;
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/// <summary>
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/// 返回一个唯一识别号 以时间戳为基础
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/// </summary>
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/// <returns></returns>
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/// <remarks>
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/// 这方法产生的ID会短一点，但是单位时间内产生的数量较少
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/// </remarks>
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public static string GetNewUUID2()
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{
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lock (getNewUUIDLock2)
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{
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while (true)
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{
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string timeTick = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString();
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if (timeTick != lasTimeTick2)
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{
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lasTimeTick2 = timeTick;
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sortUUID2 = 0;
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}
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string sort = sortUUID2.ToString().PadLeft(3, '0');
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string newUUID = $"{timeTick}{sysId}{sort}";
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sortUUID2++;
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if (sortUUID2 > 900)
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sortUUID2 = 0;
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if (newUUID != lastUUID2)
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{
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lastUUID2 = newUUID;
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return newUUID;
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}
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}
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}
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}
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#endregion
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}
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