111 lines
3.6 KiB
C#
111 lines
3.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading;
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namespace WaterCloud.Code
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{
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public class Utils
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{
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#region 自动生成编号
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/// <summary>
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/// 表示全局唯一标识符 (GUID)。
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/// </summary>
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/// <returns></returns>
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public static string GuId()
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{
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return IDGen.NextID().ToString();
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}
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/// <summary>
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/// 自动生成编号 201008251145409865
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/// </summary>
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/// <returns></returns>
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public static string CreateNo()
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{
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Random random = new Random();
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string strRandom = random.Next(1000, 10000).ToString(); //生成编号
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string code = DateTime.Now.ToString("yyyyMMddHHmmss") + strRandom;//形如
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return code;
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}
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#endregion
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public static string GetGuid()
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{
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return IDGen.NextID().ToString().Replace("-", string.Empty).ToLower();
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}
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/// <summary>
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/// Signature 签名算法
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/// </summary>
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/// <param name="key"></param>
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/// <param name="text"></param>
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/// <returns></returns>
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public static string HmacSign(string message, string secret)
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{
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secret = secret ?? "";
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var encoding = new System.Text.ASCIIEncoding();
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byte[] keyByte = System.Text.Encoding.UTF8.GetBytes(secret);
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byte[] messageBytes = System.Text.Encoding.UTF8.GetBytes(message);
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using (var hmacsha256 = new HMACSHA256(keyByte))
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{
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byte[] hashmessage = hmacsha256.ComputeHash(messageBytes);
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return System.Web.HttpUtility.UrlEncode(Convert.ToBase64String(hashmessage));
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}
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}
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/// <summary>
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/// 获取时间戳（毫秒）
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/// </summary>
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/// <returns></returns>
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public static string GetTimeStamp()
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{
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TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
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return Convert.ToInt64(ts.TotalMilliseconds).ToString();
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}
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/// <summary>
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/// 将时间戳转换为日期类型，并格式化
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/// </summary>
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/// <param name="longDateTime"></param>
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/// <returns></returns>
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public static DateTime? LongDateTimeToDateTimeString(string longDateTime)
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{
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//用来格式化long类型时间的,声明的变量
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long unixDate;
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DateTime start;
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DateTime date;
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start = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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//ENd
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if (string.IsNullOrEmpty(longDateTime))
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{
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return null;
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}
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unixDate = long.Parse(longDateTime);
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date = start.AddMilliseconds(unixDate).ToLocalTime();
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return date;
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}
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public static double Round(double d, int i)
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{
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if (d >= 0)
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{
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d += 5 * Math.Pow(10, -(i + 1));
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}
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else
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{
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d += -5 * Math.Pow(10, -(i + 1));
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}
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string str = d.ToString();
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string[] strs = str.Split('.');
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int idot = str.IndexOf('.');
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string prestr = strs[0];
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string poststr = strs.Length>1? strs[1] : "";
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if (poststr.Length > i)
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{
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poststr = str.Substring(idot + 1, i);
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}
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string strd = prestr + "." + poststr;
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d = Double.Parse(strd);
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return d;
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}
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}
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}
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