public class Utils { #region 对象转换处理 /// <summary> /// 判断对象是否为Int32类型的数字 /// </summary> /// <param name="Expression"></param> /// <returns></returns> public static bool IsNumeric(object expression) { if (expression != null) return IsNumeric(expression.ToString()); return false; } /// <summary> /// 判断对象是否为Int32类型的数字 /// </summary> /// <param name="Expression"></param> /// <returns></returns> public static bool IsNumeric(string expression) { if (expression != null) { string str = expression; if (str.Length > 0 && str.Length <= 11 && Regex.IsMatch(str, @"^[-]?[0-9]*[.]?[0-9]*$")) { if ((str.Length < 10) || (str.Length == 10 && str[0] == ‘1‘) || (str.Length == 11 && str[0] == ‘-‘ && str[1] == ‘1‘)) return true; } } return false; } /// <summary> /// 截取字符串长度，超出部分使用后缀suffix代替，比如abcdevfddd取前3位，后面使用...代替 /// </summary> /// <param name="orginStr"></param> /// <param name="length"></param> /// <param name="suffix"></param> /// <returns></returns> public static string SubStrAddSuffix(string orginStr, int length, string suffix) { string ret = orginStr; if (orginStr.Length > length) { ret = orginStr.Substring(0, length) + suffix; } return ret; } /// <summary> /// 是否为Double类型 /// </summary> /// <param name="expression"></param> /// <returns></returns> public static bool IsDouble(object expression) { if (expression != null) return Regex.IsMatch(expression.ToString(), @"^([0-9])[0-9]*(\.\w*)?$"); return false; } /// <summary> /// 检测是否符合email格式 /// </summary> /// <param name="strEmail">要判断的email字符串</param> /// <returns>判断结果</returns> public static bool IsValidEmail(string strEmail) { return Regex.IsMatch(strEmail, @"^[\w\.]+([-]\w+)*@[A-Za-z0-9-_]+[\.][A-Za-z0-9-_]"); } public static bool IsValidDoEmail(string strEmail) { return Regex.IsMatch(strEmail, @"^@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"); } /// <summary> /// 检测是否是正确的Url /// </summary> /// <param name="strUrl">要验证的Url</param> /// <returns>判断结果</returns> public static bool IsURL(string strUrl) { return Regex.IsMatch(strUrl, @"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\‘\\\+&%\$#\=~_\-]+))*$"); } /// <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[‘,‘]); } /// <summary> /// 将数组转换为字符串 /// </summary> /// <param name="list">List</param> /// <param name="speater">分隔符</param> /// <returns>String</returns> public static string GetArrayStr(List<string> list, string speater) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.Count; i++) { if (i == list.Count - 1) { sb.Append(list[i]); } else { sb.Append(list[i]); sb.Append(speater); } } return sb.ToString(); } /// <summary> /// object型转换为bool型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的bool类型结果</returns> public static bool StrToBool(object expression, bool defValue) { if (expression != null) return StrToBool(expression, defValue); return defValue; } /// <summary> /// string型转换为bool型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的bool类型结果</returns> public static bool StrToBool(string expression, bool defValue) { if (expression != null) { if (string.Compare(expression, "true", true) == 0) return true; else if (string.Compare(expression, "false", true) == 0) return false; } return defValue; } /// <summary> /// 将对象转换为Int32类型 /// </summary> /// <param name="expression">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static int ObjToInt(object expression, int defValue) { if (expression != null) return StrToInt(expression.ToString(), defValue); return defValue; } /// <summary> /// 将字符串转换为Int32类型 /// </summary> /// <param name="expression">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static int StrToInt(string expression, int defValue) { if (string.IsNullOrEmpty(expression) || expression.Trim().Length >= 11 || !Regex.IsMatch(expression.Trim(), @"^([-]|[0-9])[0-9]*(\.\w*)?$")) return defValue; int rv; if (Int32.TryParse(expression, out rv)) return rv; return Convert.ToInt32(StrToFloat(expression, defValue)); } /// <summary> /// Object型转换为decimal型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的decimal类型结果</returns> public static decimal ObjToDecimal(object expression, decimal defValue) { if (expression != null) return StrToDecimal(expression.ToString(), defValue); return defValue; } /// <summary> /// string型转换为decimal型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的decimal类型结果</returns> public static decimal StrToDecimal(string expression, decimal defValue) { if ((expression == null) || (expression.Length > 10)) return defValue; decimal intValue = defValue; if (expression != null) { bool IsDecimal = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$"); if (IsDecimal) decimal.TryParse(expression, out intValue); } return intValue; } /// <summary> /// Object型转换为float型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static float ObjToFloat(object expression, float defValue) { if (expression != null) return StrToFloat(expression.ToString(), defValue); return defValue; } /// <summary> /// string型转换为float型 /// </summary> /// <param name="strValue">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static float StrToFloat(string expression, float defValue) { if ((expression == null) || (expression.Length > 10)) return defValue; float intValue = defValue; if (expression != null) { bool IsFloat = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$"); if (IsFloat) float.TryParse(expression, out intValue); } return intValue; } /// <summary> /// 将对象转换为日期时间类型 /// </summary> /// <param name="str">要转换的字符串</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static DateTime StrToDateTime(string str, DateTime defValue) { if (!string.IsNullOrEmpty(str)) { DateTime dateTime; if (DateTime.TryParse(str, out dateTime)) return dateTime; } return defValue; } /// <summary> /// 将对象转换为日期时间类型 /// </summary> /// <param name="str">要转换的字符串</param> /// <returns>转换后的int类型结果</returns> public static DateTime StrToDateTime(string str) { return StrToDateTime(str, DateTime.Now); } /// <summary> /// 将对象转换为日期时间类型 /// </summary> /// <param name="obj">要转换的对象</param> /// <returns>转换后的int类型结果</returns> public static DateTime ObjectToDateTime(object obj) { return StrToDateTime(obj.ToString()); } /// <summary> /// 将对象转换为日期时间类型 /// </summary> /// <param name="obj">要转换的对象</param> /// <param name="defValue">缺省值</param> /// <returns>转换后的int类型结果</returns> public static DateTime ObjectToDateTime(object obj, DateTime defValue) { return StrToDateTime(obj.ToString(), defValue); } /// <summary> /// 将对象转换为字符串 /// </summary> /// <param name="obj">要转换的对象</param> /// <returns>转换后的string类型结果</returns> public static string ObjectToStr(object obj) { if (obj == null) return ""; return obj.ToString().Trim(); } /// <summary> /// 将对象转换为Int类型 /// </summary> /// <param name="o"></param> /// <returns></returns> public static int ObjToInt(object obj) { if (isNumber(obj)) { return int.Parse(obj.ToString()); } else { return 0; } } /// <summary> /// 判断对象是否可以转成int型 /// </summary> /// <param name="o"></param> /// <returns></returns> public static bool isNumber(object o) { int tmpInt; if (o == null) { return false; } if (o.ToString().Trim().Length == 0) { return false; } if (!int.TryParse(o.ToString(), out tmpInt)) { return false; } else { return true; } } #endregion #region 分割字符串 /// <summary> /// 分割字符串 /// </summary> public static string[] SplitString(string strContent, string strSplit) { if (!string.IsNullOrEmpty(strContent)) { if (strContent.IndexOf(strSplit) < 0) return new string[] { strContent }; return Regex.Split(strContent, Regex.Escape(strSplit), RegexOptions.IgnoreCase); } else return new string[0] { }; } /// <summary> /// 分割字符串 /// </summary> /// <returns></returns> public static string[] SplitString(string strContent, string strSplit, int count) { string[] result = new string[count]; string[] splited = SplitString(strContent, strSplit); for (int i = 0; i < count; i++) { if (i < splited.Length) result[i] = splited[i]; else result[i] = string.Empty; } return result; } #endregion #region 删除最后结尾的一个逗号 /// <summary> /// 删除最后结尾的一个逗号 /// </summary> public static string DelLastComma(string str) { if (str.Length < 1) { return ""; } return str.Substring(0, str.LastIndexOf(",")); } #endregion #region 删除最后结尾的指定字符后的字符 /// <summary> /// 删除最后结尾的指定字符后的字符 /// </summary> public static string DelLastChar(string str, string strchar) { if (string.IsNullOrEmpty(str)) return ""; if (str.LastIndexOf(strchar) >= 0 && str.LastIndexOf(strchar) == str.Length - 1) { return str.Substring(0, str.LastIndexOf(strchar)); } return str; } #endregion #region 生成指定长度的字符串 /// <summary> /// 生成指定长度的字符串,即生成strLong个str字符串 /// </summary> /// <param name="strLong">生成的长度</param> /// <param name="str">以str生成字符串</param> /// <returns></returns> public static string StringOfChar(int strLong, string str) { string ReturnStr = ""; for (int i = 0; i < strLong; i++) { ReturnStr += str; } return ReturnStr; } #endregion #region 生成日期随机码 /// <summary> /// 生成日期随机码 /// </summary> /// <returns></returns> public static string GetRamCode() { #region return DateTime.Now.ToString("yyyyMMddHHmmssffff"); #endregion } #endregion #region 生成随机字母或数字 /// <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(3); string result = ""; System.Random random = new System.Random(); 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("yyMMddHHmmss");//yyyyMMddHHmmssms return num + Number(2, true).ToString(); } private static int Next(int numSeeds, int length) { byte[] buffer = new byte[length]; System.Security.Cryptography.RNGCryptoServiceProvider Gen = new System.Security.Cryptography.RNGCryptoServiceProvider(); Gen.GetBytes(buffer); uint randomResult = 0x0;//这里用uint作为生成的随机数 for (int i = 0; i < length; i++) { randomResult |= ((uint)buffer[i] << ((length - 1 - i) * 8)); } return (int)(randomResult % numSeeds); } #endregion #region TXT代码转换成HTML格式 /// <summary> /// 字符串字符处理 /// </summary> /// <param name="chr">等待处理的字符串</param> /// <returns>处理后的字符串</returns> /// //把TXT代码转换成HTML格式 public static String ToHtml(string Input) { StringBuilder sb = new StringBuilder(Input); sb.Replace("‘", "'"); sb.Replace("&", "&"); sb.Replace("<", "<"); sb.Replace(">", ">"); sb.Replace("\r\n", "<br />"); sb.Replace("\n", "<br />"); sb.Replace("\t", " "); //sb.Replace(" ", " "); return sb.ToString(); } #endregion #region HTML代码转换成TXT格式 /// <summary> /// 字符串字符处理 /// </summary> /// <param name="chr">等待处理的字符串</param> /// <returns>处理后的字符串</returns> /// //把HTML代码转换成TXT格式 public static String ToTxt(String Input) { StringBuilder sb = new StringBuilder(Input); sb.Replace(" ", " "); sb.Replace("<br>", "\r\n"); sb.Replace("<br>", "\n"); sb.Replace("<br />", "\n"); sb.Replace("<br />", "\r\n"); sb.Replace("<", "<"); sb.Replace(">", ">"); sb.Replace("&", "&"); return sb.ToString(); } #endregion #region 检测是否有Sql危险字符 /// <summary> /// 检测是否有Sql危险字符 /// </summary> /// <param name="str">要判断字符串</param> /// <returns>判断结果</returns> public static bool IsSafeSqlString(string str) { return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\‘]"); } /// <summary> /// 检查危险字符 /// </summary> /// <param name="Input"></param> /// <returns></returns> public static string Filter(string sInput) { if (sInput == null || sInput == "") return null; string sInput1 = sInput.ToLower(); string output = sInput; string pattern = @"*|and|exec|insert|select|delete|update|count|master|truncate|declare|char(|mid(|chr(|‘"; if (Regex.Match(sInput1, Regex.Escape(pattern), RegexOptions.Compiled | RegexOptions.IgnoreCase).Success) { throw new Exception("字符串中含有非法字符!"); } else { output = output.Replace("‘", "‘‘"); } return output; } /// <summary> /// 检查过滤设定的危险字符 /// </summary> /// <param name="InText">要过滤的字符串 </param> /// <returns>如果参数存在不安全字符，则返回true </returns> public static bool SqlFilter(string word, string InText) { if (InText == null) return false; foreach (string i in word.Split(‘|‘)) { if ((InText.ToLower().IndexOf(i + " ") > -1) || (InText.ToLower().IndexOf(" " + i) > -1)) { return true; } } return false; } #endregion #region 过滤特殊字符 /// <summary> /// 过滤特殊字符 /// </summary> /// <param name="Input"></param> /// <returns></returns> public static string Htmls(string Input) { if (Input != string.Empty && Input != null) { string ihtml = Input.ToLower(); ihtml = ihtml.Replace("<script", "<script"); ihtml = ihtml.Replace("script>", "script>"); ihtml = ihtml.Replace("<%", "<%"); ihtml = ihtml.Replace("%>", "%>"); ihtml = ihtml.Replace("<$", "<$"); ihtml = ihtml.Replace("$>", "$>"); ihtml = ihtml.Replace("‘", "'"); ihtml = ihtml.Replace("\"", """); ihtml = ihtml.Replace("<", "<"); ihtml = ihtml = ihtml.Replace(">", ">"); ihtml = ihtml.Replace("\r", "\\\r"); ihtml = ihtml.Replace("\n", "\\\n"); ihtml = ihtml.Replace("\t", " "); return ihtml; } else { return string.Empty; } } #endregion #region 检查是否为IP地址 /// <summary> /// 是否为ip /// </summary> /// <param name="ip"></param> /// <returns></returns> public static bool IsIP(string ip) { return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$"); } #endregion #region 替换指定的字符串 /// <summary> /// 替换指定的字符串 /// </summary> /// <param name="originalStr">原字符串</param> /// <param name="oldStr">旧字符串</param> /// <param name="newStr">新字符串</param> /// <returns></returns> public static string ReplaceStr(string originalStr, string oldStr, string newStr) { if (string.IsNullOrEmpty(oldStr)) { return ""; } return originalStr.Replace(oldStr, newStr); } #endregion #region DATS转换城datetime /// <summary> /// 替换指定的DATS转换城datetime /// </summary> /// <param name="DatsStr">原字符串</param> /// <returns></returns> public static DateTime ReplaceDats(string datsStr) { DateTime datsTime = DateTime.MinValue; if (!string.IsNullOrEmpty(datsStr)) { if (datsStr.Trim().Length == 8) { string year = datsStr.Remove(4); string month = datsStr.Substring(4).Remove(2); string day = datsStr.Substring(4).Substring(2); datsTime = new DateTime(int.Parse(year), int.Parse(month), int.Parse(day)); } } return datsTime; } /// <summary> /// 获取枚举的特性 /// </summary> /// <param name="t"></param> /// <returns></returns> public static string DisplayEnum(Enum t) { var t_type = t.GetType(); var fieldName = Enum.GetName(t_type, t); var attributes = t_type.GetField(fieldName).GetCustomAttributes(false); var enumDisplayAttribute = attributes.FirstOrDefault(p => p.GetType().Equals(typeof(DisplayAttribute))) as DisplayAttribute; return enumDisplayAttribute == null ? fieldName : enumDisplayAttribute.Display; } /// <summary> /// 根据特性获取枚举 /// </summary> /// <param name="t"></param> /// <returns></returns> public static object DisplayEnum<T>(string code) { var t_type = typeof(T); var field = Enum.GetValues(typeof(T)).OfType<T>().ToList(); var attributes = t_type.GetFields().Select(x => new { attr = x.GetCustomAttributes(false).FirstOrDefault(y=>y.GetType().Equals(typeof(DisplayAttribute))) as DisplayAttribute, enu = x }).Where(x=>x.attr !=null); var enumValue = attributes.Where(x => x.attr.Display == code).FirstOrDefault(); if (enumValue != null) { return Enum.Parse(t_type, enumValue.enu.Name); } return null; } #endregion #region 获取GUID /// <summary> /// 获取32位的GUID /// </summary> /// <returns></returns> public static string GetGuid() { return Guid.NewGuid().ToString().Replace("-", "").ToUpper(); } /// <summary> /// 获取36位的GUID /// </summary> /// <returns></returns> public static string GetGuidLong() { return Guid.NewGuid().ToString().ToUpper(); } #endregion }