public class Utils
{
/// <summary>
/// 生成随机字母字符串(数字字母混和)
/// </summary>
/// <param name="codeCount">待生成的位数</param>
public static string GetCheckCode(int codeCount)
{
string str = string.Empty;
int rep = 0;
long num2 = DateTime.Now.Ticks + rep;
rep++;
Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
for (int i = 0; i < codeCount; i++)
{
char ch;
int num = random.Next();
if ((num % 2) == 0)
{
ch = (char)(0x30 + ((ushort)(num % 10)));
}
else
{
ch = (char)(0x41 + ((ushort)(num % 0x1a)));
}
str = str + ch.ToString();
}
return str;
}
/// <summary>
/// 将字符串转换为int类型数组
/// </summary>
/// <param name="str">如1,2,3,4,5</param>
/// <returns></returns>
public static List<int> StrToListInt(string str)
{
if (string.IsNullOrWhiteSpace(str))
{
return null;
}
var list = new List<int>();
if (!str.Contains(","))
{
list.Add(int.Parse(str));
return list;
}
var slist = str.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var item in slist)
{
list.Add(int.Parse(item));
}
return list;
}
/// <summary>
/// 将字符串转换为int类型数组
/// </summary>
/// <param name="str">如1,2,3,4,5</param>
/// <returns></returns>
public static List<string> StrToListString(string str)
{
var list = new List<string>();
if (!str.Contains(","))
{
list.Add(str);
return list;
}
var slist = str.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var item in slist)
{
list.Add(item);
}
return list;
}
/// <summary>
/// 将字符串转换为数组
/// </summary>
/// <param name="str">字符串</param>
/// <returns>字符串数组</returns>
public static string[] GetStrArray(string str)
{
return str.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
}
#region 截取字符串
public static string GetSubString(string pSrcString, int pLength, string pTailString)
{
return GetSubString(pSrcString, 0, pLength, pTailString);
}
public static string GetSubString(string pSrcString, int pStartIndex, int pLength, string pTailString)
{
string str = pSrcString;
byte[] bytes = Encoding.UTF8.GetBytes(pSrcString);
foreach (char ch in Encoding.UTF8.GetChars(bytes))
{
if (((ch > 'ࠀ') && (ch < '一')) || ((ch > 0xac00) && (ch < 0xd7a3)))
{
if (pStartIndex >= pSrcString.Length)
{
return "";
}
return pSrcString.Substring(pStartIndex, ((pLength + pStartIndex) > pSrcString.Length) ? (pSrcString.Length - pStartIndex) : pLength);
}
}
if (pLength < 0)
{
return str;
}
byte[] sourceArray = Encoding.Default.GetBytes(pSrcString);
if (sourceArray.Length <= pStartIndex)
{
return str;
}
int length = sourceArray.Length;
if (sourceArray.Length > (pStartIndex + pLength))
{
length = pLength + pStartIndex;
}
else
{
pLength = sourceArray.Length - pStartIndex;
pTailString = "";
}
int num2 = pLength;
int[] numArray = new int[pLength];
byte[] destinationArray = null;
int num3 = 0;
for (int i = pStartIndex; i < length; i++)
{
if (sourceArray[i] > 0x7f)
{
num3++;
if (num3 == 3)
{
num3 = 1;
}
}
else
{
num3 = 0;
}
numArray[i] = num3;
}
if ((sourceArray[length - 1] > 0x7f) && (numArray[pLength - 1] == 1))
{
num2 = pLength + 1;
}
destinationArray = new byte[num2];
Array.Copy(sourceArray, pStartIndex, destinationArray, 0, num2);
return (Encoding.Default.GetString(destinationArray) + pTailString);
}
#endregion
#region 截取字符长度
/// <summary>
/// 截取字符长度
/// </summary>
/// <param name="inputString">字符</param>
/// <param name="len">长度</param>
/// <returns></returns>
public static string CutString(string inputString, int len)
{
if (string.IsNullOrEmpty(inputString))
return "";
inputString = DropHtml(inputString);
ASCIIEncoding ascii = new ASCIIEncoding();
int tempLen = 0;
string tempString = "";
byte[] s = ascii.GetBytes(inputString);
for (int i = 0; i < s.Length; i++)
{
if ((int)s[i] == 63)
{
tempLen += 2;
}
else
{
tempLen += 1;
}
try
{
tempString += inputString.Substring(i, 1);
}
catch
{
break;
}
if (tempLen > len)
break;
}
//如果截过则加上半个省略号
byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
if (mybyte.Length > len)
tempString += "…";
return tempString;
}
public static string DropHtml(string htmlstring)
{
if (string.IsNullOrEmpty(htmlstring)) return "";
//删除脚本
htmlstring = Regex.Replace(htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
//删除HTML
htmlstring = Regex.Replace(htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"-->", "", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(nbsp|#160);", " ", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
htmlstring = Regex.Replace(htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);
htmlstring = htmlstring.Replace("<", "");
htmlstring = htmlstring.Replace(">", "");
htmlstring = htmlstring.Replace("\r\n", "");
//htmlstring = HttpContext.Current.Server.HtmlEncode(htmlstring).Trim();
return htmlstring;
}
#endregion
#region 得到一个汉字的拼音第一个字母，如果是一个英文字母则直接返回大写字母
/// <summary>
/// 得到一个汉字的拼音第一个字母，如果是一个英文字母则直接返回大写字母
/// </summary>
/// <param name="CnChar">单个汉字</param>
/// <returns>单个大写字母</returns>
public static string GetCharSpellCode(string CnChar)
{
long iCnChar;
byte[] ZW = Encoding.Default.GetBytes(CnChar);
//如果是字母，则直接返回首字母
if (ZW.Length == 1)
{
return CutString(CnChar.ToUpper(), 1);
}
else
{
int i1 = (short)(ZW[0]);
int i2 = (short)(ZW[1]);
iCnChar = i1 * 256 + i2;
}
// iCnChar match the constant
if ((iCnChar >= 45217) && (iCnChar <= 45252))
{
return "A";
}
else if ((iCnChar >= 45253) && (iCnChar <= 45760))
{
return "B";
}
else if ((iCnChar >= 45761) && (iCnChar <= 46317))
{
return "C";
}
else if ((iCnChar >= 46318) && (iCnChar <= 46825))
{
return "D";
}
else if ((iCnChar >= 46826) && (iCnChar <= 47009))
{
return "E";
}
else if ((iCnChar >= 47010) && (iCnChar <= 47296))
{
return "F";
}
else if ((iCnChar >= 47297) && (iCnChar <= 47613))
{
return "G";
}
else if ((iCnChar >= 47614) && (iCnChar <= 48118))
{
return "H";
}
else if ((iCnChar >= 48119) && (iCnChar <= 49061))
{
return "J";
}
else if ((iCnChar >= 49062) && (iCnChar <= 49323))
{
return "K";
}
else if ((iCnChar >= 49324) && (iCnChar <= 49895))
{
return "L";
}
else if ((iCnChar >= 49896) && (iCnChar <= 50370))
{
return "M";
}
else if ((iCnChar >= 50371) && (iCnChar <= 50613))
{
return "N";
}
else if ((iCnChar >= 50614) && (iCnChar <= 50621))
{
return "O";
}
else if ((iCnChar >= 50622) && (iCnChar <= 50905))
{
return "P";
}
else if ((iCnChar >= 50906) && (iCnChar <= 51386))
{
return "Q";
}
else if ((iCnChar >= 51387) && (iCnChar <= 51445))
{
return "R";
}
else if ((iCnChar >= 51446) && (iCnChar <= 52217))
{
return "S";
}
else if ((iCnChar >= 52218) && (iCnChar <= 52697))
{
return "T";
}
else if ((iCnChar >= 52698) && (iCnChar <= 52979))
{
return "W";
}
else if ((iCnChar >= 52980) && (iCnChar <= 53640))
{
return "X";
}
else if ((iCnChar >= 53689) && (iCnChar <= 54480))
{
return "Y";
}
else if ((iCnChar >= 54481) && (iCnChar <= 55289))
{
return "Z";
}
else
return ("?");
}
#endregion
#region 获得IP地址
/// <summary>
/// 获得IP地址
/// </summary>
/// <returns>字符串数组</returns>
public static string GetIp()
{
HttpContextAccessor _context = new HttpContextAccessor();
var ip = _context.HttpContext.Request.Headers["X-Forwarded-For"].ToString();
if (string.IsNullOrEmpty(ip))
{
ip = _context.HttpContext.Connection.RemoteIpAddress.ToString();
}
return ip;
}
#endregion
#region 获得当前访问的URL地址
/// <summary>
/// 获得当前访问的URL地址
/// </summary>
/// <returns>字符串数组</returns>
public static string GetUrl()
{
HttpContextAccessor _context = new HttpContextAccessor();
return _context.HttpContext.Request.Path.ToString();
}
#endregion
#region 获取当前服务器域名
/// <summary>
/// 获取当前服务器域名
/// </summary>
/// <returns></returns>
public static string GetSchemeHost()
{
HttpContextAccessor _context = new HttpContextAccessor();
return _context.HttpContext.Request.Scheme + "://" + _context.HttpContext.Request.Host;
}
#endregion
#region 分割字符串
public static string[] SplitString(string strContent, char strSplit)
{
if (!string.IsNullOrEmpty(strContent))
{
return strContent.Split(new char[] { strSplit }, StringSplitOptions.RemoveEmptyEntries);
}
else
{
return new string[0] { };
}
}
/// <summary>
/// 分割字符串
/// </summary>
public static string[] SplitString(string strContent, string strSplit)
{
if (!string.IsNullOrEmpty(strContent))
{
if (strContent.IndexOf(strSplit, StringComparison.Ordinal) < 0)
return new string[] { strContent };
return Regex.Split(strContent, Regex.Escape(strSplit), RegexOptions.IgnoreCase);
}
else
return new string[0] { };
}
/// <summary>
/// /// 按字符串长度切分成数组
/// /// </summary>
/// /// <param name="str">原字符串</param>
/// /// <param name="separatorCharNum">切分长度</param>
/// /// <returns>字符串数组</returns>
public static List<string> SplitByLen(string str, int separatorCharNum)
{
List<string> strList = new List<string>();
if (string.IsNullOrEmpty(str) || str.Length <= separatorCharNum)
{
return strList;
}
string tempStr = str;
int iMax = Convert.ToInt32(Math.Ceiling(str.Length / (separatorCharNum * 1.0)));//获取循环次数
for (int i = 1; i <= iMax; i++)
{
string currMsg = tempStr.Substring(0, tempStr.Length > separatorCharNum ? separatorCharNum : tempStr.Length);
strList.Add(currMsg);
if (tempStr.Length > separatorCharNum)
{
tempStr = tempStr.Substring(separatorCharNum, tempStr.Length - separatorCharNum);
}
}
return strList;
}
#endregion
#region 显示错层方法
/// <summary>
/// 显示错层方法
/// </summary>
public static string LevelName(string name, decimal? level)
{
if (level > 1)
{
string nbsp = "";
for (int i = 0; i < level; i++)
{
nbsp += " ";
}
name = nbsp + "|--" + name;
}
return name;
}
#endregion
#region 生成随机字母或数字
private static readonly Random Random = new Random();
/// <summary>
/// 生成随机数字
/// </summary>
/// <param name="length">生成长度</param>
/// <returns></returns>
public static string Number(int length)
{
return Number(length, false);
}
/// <summary>
/// 生成随机数字
/// </summary>
/// <param name="length">生成长度</param>
/// <param name="sleep">是否要在生成前将当前线程阻止以避免重复</param>
/// <returns></returns>
public static string Number(int length, bool sleep)
{
if (sleep)
System.Threading.Thread.Sleep(2);
string result = "";
for (int i = 0; i < length; i++)
{
result += Random.Next(10).ToString();
}
return result;
}
/// <summary>
/// 根据日期和随机码生成订单号
/// </summary>
/// <returns></returns>
public static string GetOrderNumber()
{
string num = DateTime.Now.ToString("yyyyMMddHHmmssms"); //yyyyMMddHHmmssms
return num + Number(2);
}
#endregion
#region Base64位加密解密
/// <summary>
/// 将字符串转换成base64格式,使用UTF8字符集
/// </summary>
/// <param name="content">加密内容</param>
/// <returns></returns>
public static string Base64Encode(string content)
{
byte[] bytes = Encoding.UTF8.GetBytes(content);
return Convert.ToBase64String(bytes);
}
/// <summary>
/// 将base64格式，转换utf8
/// </summary>
/// <param name="content">解密内容</param>
/// <returns></returns>
public static string Base64Decode(string content)
{
byte[] bytes = Convert.FromBase64String(content);
return Encoding.UTF8.GetString(bytes);
}
#endregion
#region 条形码解析
/// <summary>
/// 分解条形码，并返回数组
/// </summary>
/// <param name="code">条形码</param>
/// <returns>数组0=品牌 1=季节 2=款式 3=批次 4=尺码</returns>
public static List<string> GetSkuArray(string code)
{
var str = new List<string>();
//品牌，截取0-3
str.Add(code.Substring(0, 3));
//季节截取
str.Add(code.Substring(3, 1));
//款式截取
str.Add(code.Substring(4, 1));
//批次截取
str.Add(code.Substring(5, 1));
//尺码截取
str.Add(code.Substring(6, 1));
return str;
}
#endregion
#region 返回采购单入库状态
/// <summary>
/// 返回采购单入库状态
/// </summary>
/// <param name="status">状态</param>
/// <returns></returns>
public static string PurchaseStatus(string status)
{
var str = "";
switch (int.Parse(status))
{
case 1: str = "未完成入库"; break;
case 2: str = "未完成付款"; break;
case 3: str = "未完成到票"; break;
case 4: str = "完成"; break;
}
return str;
}
#endregion
#region 生成采购单编号
/// <summary>
/// 生成采购单编号
/// </summary>
/// <returns></returns>
public static string PurchaseNumber(int lastNumber)
{
return "CG-" + DateTime.Now.ToString("yyyyMMdd") + "-" + lastNumber.ToString();
}
#endregion
#region 上传配置
/// <summary>
/// 根据文件类型分配路径
/// </summary>
/// <param name="fileExt"></param>
/// <returns></returns>
public static string AssigendPath(string fileExt, string path)
{
if (IsImage(fileExt))
return path + "/upload/images/" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + "/";
if (IsVideos(fileExt))
return path + "/upload/videos/" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + "/";
if (IsDocument(fileExt))
return "/upload/files/" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + "/";
if (IsMusics(fileExt))
return "/upload/musics/" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + "/";
return path + "/upload/others/";
}
#endregion
#region 文件格式
/// <summary>
/// 是否为图片
/// </summary>
/// <param name="_fileExt">文件扩展名，不含“.”</param>
/// <returns></returns>
private static bool IsImage(string _fileExt)
{
var images = new List<string> { "bmp", "gif", "jpg", "jpeg", "png" };
if (images.Contains(_fileExt.ToLower())) return true;
return false;
}
/// <summary>
/// 是否为视频
/// </summary>
/// <param name="_fileExt">文件扩展名，不含“.”</param>
/// <returns></returns>
private static bool IsVideos(string _fileExt)
{
var videos = new List<string> { "rmvb", "mkv", "ts", "wma", "avi", "rm", "mp4", "flv", "mpeg", "mov", "3gp", "mpg" };
if (videos.Contains(_fileExt.ToLower())) return true;
return false;
}
/// <summary>
/// 是否为音频
/// </summary>
/// <param name="_fileExt">文件扩展名，不含“.”</param>
/// <returns></returns>
private static bool IsMusics(string _fileExt)
{
var musics = new List<string> { "mp3", "wav" };
if (musics.Contains(_fileExt.ToLower())) return true;
return false;
}
/// <summary>
/// 是否为文档
/// </summary>
/// <param name="_fileExt">文件扩展名，不含“.”</param>
/// <returns></returns>
private static bool IsDocument(string _fileExt)
{
var documents = new List<string> { "doc", "docx", "xls", "xlsx", "ppt", "pptx", "txt", "pdf" };
if (documents.Contains(_fileExt.ToLower())) return true;
return false;
}
#endregion
#region 返回活动名称
/// <summary>
/// 返回活动名称
/// </summary>
/// <param name="method"></param>
/// <returns></returns>
public static string GetActivityMethod(int method)
{
var str = "";
switch (method)
{
case 1: str = "打折"; break;
case 2: str = "满减"; break;
case 3: str = "买一赠一"; break;
default: str = "无"; break;
}
return str;
}
/// <summary>
/// 根据方式返回参加活动类型
/// </summary>
/// <param name="method"></param>
/// <returns></returns>
public static byte GetActivityTypes(int method)
{
byte str = 1;
switch (method)
{
case 1: str = 2; break;
case 2: str = 3; break;
case 3: str = 4; break;
}
return str;
}
#endregion
#region 得到一周的周一和周日的日期
/// <summary>
/// 计算本周的周一日期
/// </summary>
/// <returns></returns>
public static DateTime GetMondayDate()
{
return GetMondayDate(DateTime.Now);
}
/// <summary>
/// 计算本周周日的日期
/// </summary>
/// <returns></returns>
public static DateTime GetSundayDate()
{
return GetSundayDate(DateTime.Now);
}
/// <summary>
/// 计算某日起始日期（礼拜一的日期）
/// </summary>
/// <param name="someDate">该周中任意一天</param>
/// <returns>返回礼拜一日期，后面的具体时、分、秒和传入值相等</returns>
public static DateTime GetMondayDate(DateTime someDate)
{
int i = someDate.DayOfWeek - DayOfWeek.Monday;
if (i == -1) i = 6;// i值 > = 0 ，因为枚举原因，Sunday排在最前，此时Sunday-Monday=-1，必须+7=6。
TimeSpan ts = new TimeSpan(i, 0, 0, 0);
return someDate.Subtract(ts);
}
/// <summary>
/// 计算某日结束日期（礼拜日的日期）
/// </summary>
/// <param name="someDate">该周中任意一天</param>
/// <returns>返回礼拜日日期，后面的具体时、分、秒和传入值相等</returns>
public static DateTime GetSundayDate(DateTime someDate)
{
int i = someDate.DayOfWeek - DayOfWeek.Sunday;
if (i != 0) i = 7 - i;// 因为枚举原因，Sunday排在最前，相减间隔要被7减。
TimeSpan ts = new TimeSpan(i, 0, 0, 0);
return someDate.Add(ts);
}
/// <summary>
/// 根据星期几获得数字的星期几
/// </summary>
/// <param name="weekName">例如周一：Monday</param>
/// <returns></returns>
public static int GetWeekByWeekName(string weekName)
{
var week = 1;
switch (weekName)
{
case "Monday":
week = 1;
break;
case "Tuesday":
week = 2;
break;
case "Wednesday":
week = 3;
break;
case "Thursday":
week = 4;
break;
case "Friday":
week = 5;
break;
case "Saturday":
week = 6;
break;
case "Sunday":
week = 7;
break;
}
return week;
}
#endregion
/// <summary>
/// 时间戳转换为日期（时间戳单位秒）
/// </summary>
/// <param name="TimeStamp"></param>
/// <returns></returns>
public static DateTime ConvertToDateTime(long timeStamp)
{
var dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
TimeSpan toNow = new TimeSpan(timeStamp);
return dtStart.Add(toNow);
//var start = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
//return start.AddMilliseconds(timeStamp).AddHours(8);
}
public static DateTime ConvertToDateTimeTrue(long timeStamp)
{
var start = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
return start.AddMilliseconds(timeStamp).AddHours(8);
}
/// <summary>
/// 日期转换为时间戳（时间戳单位秒）
/// </summary>
/// <param name="TimeStamp"></param>
/// <returns></returns>
public static long ConvertToTimeStamp(DateTime time)
{
DateTime Jan1st1970 = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
return (long)(time.AddHours(-8) - Jan1st1970).TotalMilliseconds;
}
/// <summary>
/// 生成唯一数
/// </summary>
public class UniqueData
{
private static object obj = new object();
private static int _sn = 0;
public static string Gener()
{
lock (obj)
{
if (_sn == int.MaxValue)
{
_sn = 0;
}
else
{
_sn++;
}
//Thread.Sleep(100);
return DateTime.Now.ToString("yyyyMMdd") + _sn.ToString().PadLeft(5, '0');
}
}
}
#region 返回时间差
public static string DateDiff(DateTime DateTime1, DateTime DateTime2)
{
string dateDiff = null;
try
{
//TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
//TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
//TimeSpan ts = ts1.Subtract(ts2).Duration();
TimeSpan ts = DateTime2 - DateTime1;
if (ts.Days >= 1)
{
dateDiff = DateTime1.Month.ToString() + "月" + DateTime1.Day.ToString() + "日";
}
else
{
if (ts.Hours > 1)
{
dateDiff = ts.Hours.ToString() + "小时前";
}
else
{
dateDiff = ts.Minutes.ToString() + "分钟前";
}
}
}
catch
{ }
return dateDiff;
}
#endregion
#region 社区返回用户等级颜色标识
/// <summary>
/// 社区返回用户等级颜色标识
/// </summary>
/// <param name="groupName"></param>
/// <returns></returns>
public static string GetAskGroupColor(string groupName)
{
var str = "";
switch (groupName)
{
case "普通用户":
str = "04aad4"; break;
case "专家":
str = "ffbf00"; break;
case "社区管理员":
str = "a35429"; break;
case "创始人":
str = "780978"; break;
default:
str = "04aad4"; break;
}
return str;
}
#endregion
/// <summary>
/// 打乱数组的顺序
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list"></param>
/// <returns></returns>
public static List<T> RandomSort<T>(List<T> list)
{
var random = new Random();
var newList = new List<T>();
foreach (var item in list)
{
int s = random.Next(newList.Count);
newList.Insert(s, item);
}
return newList;
}
}
