c# 工具类(字符串和时间,文件)
- using System;
- using System.IO;
- using System.Text.RegularExpressions;
- using System.Windows.Browser;
- namespace SL_COMMON
- {
- public class Utils
- {
- #region String字符串类
- /**/
- /// <summary>
- /// 过滤字符
- /// </summary>
- public static string Replace(string strOriginal, string oldchar, string newchar)
- {
- if (string.IsNullOrEmpty(strOriginal))
- return "";
- string tempChar = strOriginal;
- tempChar = tempChar.Replace(oldchar, newchar);
- return tempChar;
- }
- /**/
- /// <summary>
- /// 过滤非法字符
- /// </summary>
- /// <param name="str"></param>
- /// <returns></returns>
- public static string ReplaceBadChar(string str)
- {
- if (string.IsNullOrEmpty(str))
- return "";
- string strBadChar, tempChar;
- string[] arrBadChar;
- strBadChar = "@@,+,',--,%,^,&,?,(,),<,>,[,],{,},/,\\,;,:,\",\"\",";
- arrBadChar = SplitString(strBadChar, ",");
- tempChar = str;
- for (int i = 0; i < arrBadChar.Length; i++)
- {
- if (arrBadChar[i].Length > 0)
- tempChar = tempChar.Replace(arrBadChar[i], "");
- }
- return tempChar;
- }
- /**/
- /// <summary>
- /// 检查是否含有非法字符
- /// </summary>
- /// <param name="str">要检查的字符串</param>
- /// <returns></returns>
- public static bool ChkBadChar(string str)
- {
- bool result = false;
- if (string.IsNullOrEmpty(str))
- return result;
- string strBadChar, tempChar;
- string[] arrBadChar;
- strBadChar = "@@,+,',--,%,^,&,?,(,),<,>,[,],{,},/,\\,;,:,\",\"\"";
- arrBadChar = SplitString(strBadChar, ",");
- tempChar = str;
- for (int i = 0; i < arrBadChar.Length; i++)
- {
- if (tempChar.IndexOf(arrBadChar[i]) >= 0)
- result = true;
- }
- return result;
- }
- /**/
- /// <summary>
- /// 分割字符串
- /// </summary>
- public static string[] SplitString(string strContent, string strSplit)
- {
- if (string.IsNullOrEmpty(strContent))
- {
- return null;
- }
- int i = strContent.IndexOf(strSplit);
- if (strContent.IndexOf(strSplit) < 0)
- {
- string[] tmp = { strContent };
- return tmp;
- }
- //return Regex.Split(strContent, @strSplit.Replace(".", @"\."), RegexOptions.IgnoreCase);
- return Regex.Split(strContent, @strSplit.Replace(".", @"\."));
- }
- /**/
- /// <summary>
- /// string型转换为int型
- /// </summary>
- /// <param name="strValue">要转换的字符串</param>
- /// <returns>转换后的int类型结果.如果要转换的字符串是非数字,则返回-1.</returns>
- public static int StrToInt(object strValue)
- {
- int defValue = -1;
- if ((strValue == null) || (strValue.ToString() == string.Empty) || (strValue.ToString().Length > 10))
- {
- return defValue;
- }
- string val = strValue.ToString();
- string firstletter = val[0].ToString();
- if (val.Length == 10 && IsNumber(firstletter) && int.Parse(firstletter) > 1)
- {
- return defValue;
- }
- else if (val.Length == 10 && !IsNumber(firstletter))
- {
- return defValue;
- }
- int intValue = defValue;
- if (strValue != null)
- {
- bool IsInt = new Regex(@"^([-]|[0-9])[0-9]*$").IsMatch(strValue.ToString());
- if (IsInt)
- {
- intValue = Convert.ToInt32(strValue);
- }
- }
- return intValue;
- }
- /**/
- /// <summary>
- /// string型转换为int型
- /// </summary>
- /// <param name="strValue">要转换的字符串</param>
- /// <param name="defValue">缺省值</param>
- /// <returns>转换后的int类型结果</returns>
- public static int StrToInt(object strValue, int defValue)
- {
- if ((strValue == null) || (strValue.ToString() == string.Empty) || (strValue.ToString().Length > 10))
- {
- return defValue;
- }
- string val = strValue.ToString();
- string firstletter = val[0].ToString();
- if (val.Length == 10 && IsNumber(firstletter) && int.Parse(firstletter) > 1)
- {
- return defValue;
- }
- else if (val.Length == 10 && !IsNumber(firstletter))
- {
- return defValue;
- }
- int intValue = defValue;
- if (strValue != null)
- {
- bool IsInt = new Regex(@"^([-]|[0-9])[0-9]*$").IsMatch(strValue.ToString());
- if (IsInt)
- {
- intValue = Convert.ToInt32(strValue);
- }
- }
- return intValue;
- }
- /**/
- /// <summary>
- /// string型转换为时间型
- /// </summary>
- /// <param name="strValue">要转换的字符串</param>
- /// <param name="defValue">缺省值</param>
- /// <returns>转换后的时间类型结果</returns>
- public static DateTime StrToDateTime(object strValue, DateTime defValue)
- {
- if ((strValue == null) || (strValue.ToString().Length > 20))
- {
- return defValue;
- }
- DateTime intValue;
- if (!DateTime.TryParse(strValue.ToString(), out intValue))
- {
- intValue = defValue;
- }
- return intValue;
- }
- /**/
- /// <summary>
- /// 判断给定的字符串(strNumber)是否是数值型
- /// </summary>
- /// <param name="strNumber">要确认的字符串</param>
- /// <returns>是则返加true 不是则返回 false</returns>
- public static bool IsNumber(string strNumber)
- {
- return new Regex(@"^([0-9])[0-9]*(\.\w*)?$").IsMatch(strNumber);
- }
- /**/
- /// <summary>
- /// 检测是否符合email格式
- /// </summary>
- /// <param name="strEmail">要判断的email字符串</param>
- /// <returns>判断结果</returns>
- public static bool IsValidEmail(string strEmail)
- {
- return Regex.IsMatch(strEmail, @"^([\w-\.]+)@((
[0−9]1,3\.[0−9]1,3\.[0−9]1,3\.)|(([\w−]+\.)+))([a−z?)$");
- }
- /**/
- /// <summary>
- /// 检测是否符合url格式,前面必需含有http://
- /// </summary>
- /// <param name="url"></param>
- /// <returns></returns>
- public static bool IsURL(string url)
- {
- return Regex.IsMatch(url, @"^http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?$");
- }
- /**/
- /// <summary>
- /// 检测是否符合电话格式
- /// </summary>
- /// <param name="phoneNumber"></param>
- /// <returns></returns>
- public static bool IsPhoneNumber(string phoneNumber)
- {
- return Regex.IsMatch(phoneNumber, @"^(\d3|\d{3}-)?\d{7,8}$");
- }
- /**/
- /// <summary>
- /// 检测是否符合身份证号码格式
- /// </summary>
- /// <param name="num"></param>
- /// <returns></returns>
- public static bool IsIdentityNumber(string num)
- {
- return Regex.IsMatch(num, @"^\d{17}[\d|X]|\d{15}$");
- }
- #endregion
- #region Sql类
- /**/
- /// <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>
- /// 替换sql语句中的单引号
- /// </summary>
- public static string ReplaceBadSQL(string str)
- {
- string str2;
- if (str == null)
- {
- str2 = "";
- }
- else
- {
- str = str.Replace("'", "''");
- str2 = str;
- }
- return str2;
- }
- #endregion
- #region Html类
- /**/
- /// <summary>
- /// 返回 HTML 字符串的解码结果
- /// </summary>
- /// <param name="str">字符串</param>
- /// <returns>解码结果</returns>
- public static string HtmlDecode(string str)
- {
- //str = str.Replace("''", "'");
- return HttpUtility.HtmlDecode(str);
- }
- /**/
- /// <summary>
- /// 替换html字符
- /// </summary>
- public static string EncodeHtml(string strHtml)
- {
- if (strHtml != "")
- {
- strHtml = strHtml.Replace(",", "&def");
- strHtml = strHtml.Replace("'", "&dot");
- strHtml = strHtml.Replace(";", "&dec");
- return strHtml;
- }
- return "";
- }
- /**/
- /// <summary>
- /// 替换回车换行符为html换行符
- /// </summary>
- public static string StrFormat(string str)
- {
- string str2;
- if (str == null)
- {
- str2 = "";
- }
- else
- {
- str = str.Replace("\r\n", "<br />");
- str = str.Replace("\n", "<br />");
- str2 = str;
- }
- return str2;
- }
- #endregion
- #region DateTime类
- /**/
- /// <summary>
- /// 返回当前服务器时间的 yyyy-MM-dd 日期格式string
- /// </summary>
- public static string GetDate()
- {
- return DateTime.Now.ToString("yyyy-MM-dd");
- }
- /**/
- /// <summary>
- ///返回当前服务器时间的标准时间格式string HH:mm:ss
- /// </summary>
- public static string GetTime()
- {
- return DateTime.Now.ToString("HH:mm:ss");
- }
- /**/
- /// <summary>
- /// 返回当前服务器时间的标准时间格式string yyyy-MM-dd HH:mm:ss
- /// </summary>
- public static string GetDateTime()
- {
- return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
- }
- /**/
- /// <summary>
- /// 返回当前服务器时间的标准时间格式string yyyy-MM-dd HH:mm:ss:fffffff
- /// </summary>
- public static string GetDateTimeF()
- {
- return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffffff");
- }
- /**/
- /// <summary>
- /// 将string类型的fDateTime转换为formatStr格式的日期类型
- /// </summary>
- public static string GetStandardDateTime(string fDateTime, string formatStr)
- {
- DateTime s = Convert.ToDateTime(fDateTime);
- return s.ToString(formatStr);
- }
- /**/
- /// <summary>
- ///将string类型的fDateTime转换为日期类型 yyyy-MM-dd HH:mm:ss
- /// </sumary>
- public static string GetStandardDateTime(string fDateTime)
- {
- return GetStandardDateTime(fDateTime, "yyyy-MM-dd HH:mm:ss");
- }
- /**/
- /// <summary>
- /// 返回相差的秒数
- /// </summary>
- /// <param name="Time"></param>
- /// <param name="Sec"></param>
- /// <returns></returns>
- public static int StrDateDiffSeconds(string Time, int Sec)
- {
- TimeSpan ts = DateTime.Now - DateTime.Parse(Time).AddSeconds(Sec);
- if (ts.TotalSeconds > int.MaxValue)
- {
- return int.MaxValue;
- }
- else if (ts.TotalSeconds < int.MinValue)
- {
- return int.MinValue;
- }
- return (int)ts.TotalSeconds;
- }
- /**/
- /// <summary>
- /// 返回相差的分钟数
- /// </summary>
- /// <param name="time"></param>
- /// <param name="minutes"></param>
- /// <returns></returns>
- public static int StrDateDiffMinutes(string time, int minutes)
- {
- if (time == "" || time == null)
- return 1;
- TimeSpan ts = DateTime.Now - DateTime.Parse(time).AddMinutes(minutes);
- if (ts.TotalMinutes > int.MaxValue)
- {
- return int.MaxValue;
- }
- else if (ts.TotalMinutes < int.MinValue)
- {
- return int.MinValue;
- }
- return (int)ts.TotalMinutes;
- }
- /**/
- /// <summary>
- /// 返回相差的小时数
- /// </summary>
- /// <param name="time"></param>
- /// <param name="hours"></param>
- /// <returns></returns>
- public static int StrDateDiffHours(string time, int hours)
- {
- if (time == "" || time == null)
- return 1;
- TimeSpan ts = DateTime.Now - DateTime.Parse(time).AddHours(hours);
- if (ts.TotalHours > int.MaxValue)
- {
- return int.MaxValue;
- }
- else if (ts.TotalHours < int.MinValue)
- {
- return int.MinValue;
- }
- return (int)ts.TotalHours;
- }
- #endregion
- #region file类
- /**/
- /// <summary>
- /// 文件是否存在
- /// </summary>
- /// <param name="filePath">相对路径</param>
- /// <returns></returns>
- public static bool FileExists(string filePath)
- {
- if (string.IsNullOrEmpty(filePath))
- return false;
- filePath = HttpContext.Current.Server.MapPath(filePath);
- DirectoryInfo dirInfo = new DirectoryInfo(filePath);
- if (dirInfo.Exists)
- return true;
- return false;
- }
- #endregion
- }
- }