www.pudn.com > MyShop.rar > Utils.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
using Microsoft.VisualBasic;
using System.IO;
using System.Security.Permissions;
using System.Collections;
using System.Runtime.InteropServices;
namespace MyShop.BLL
{
///
/// 工具类
///
public class Utils
{
#region String字符串类
///
/// 返回字符串真实长度, 1个汉字长度为2
///
///
/// 过滤非法字符
///
///
///
/// 检查是否含有非法字符
///
/// 要检查的字符串
///
/// 分割字符串
///
public static string[] SplitString(string strContent, string strSplit)
{
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(".", @"\."));
}
///
/// 检测是否有危险的可能用于链接的字符串
///
/// 要判断字符串
/// 判断结果
public static bool IsSafeUserInfoString(string str)
{
return !Regex.IsMatch(str, @"/^\s*$|^c:\\con\\con$|[%,\*" + "\"" + @"\s\t\<\>\&]|$guestexp/is");
}
///
/// string型转换为int型
///
/// 要转换的字符串
/// 转换后的int类型结果.如果要转换的字符串是非数字,则返回-1.
public static int StrToInt(object strValue)
{
int defValue = -1;
if ((strValue == null) || (strValue.ToString() == string.Empty) || (strValue.ToString().Length > 10))
{
return defValue;
}
string val = strValue.ToString();
string firstletter = val[0].ToString();
if (val.Length == 10 && IsNumber(firstletter) && int.Parse(firstletter) > 1)
{
return defValue;
}
else if (val.Length == 10 && !IsNumber(firstletter))
{
return defValue;
}
int intValue = defValue;
if (strValue != null)
{
bool IsInt = new Regex(@"^([-]|[0-9])[0-9]*$").IsMatch(strValue.ToString());
if (IsInt)
{
intValue = Convert.ToInt32(strValue);
}
}
return intValue;
}
///
/// string型转换为int型
///
/// 要转换的字符串
/// 缺省值
/// 转换后的int类型结果
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]*$").IsMatch(strValue.ToString());
if (IsInt)
{
intValue = Convert.ToInt32(strValue);
}
}
return intValue;
}
///
/// string型转换为float型
///
/// 要转换的字符串
/// 缺省值
/// 转换后的int类型结果
public static float StrToFloat(object strValue, float defValue)
{
if ((strValue == null) || (strValue.ToString().Length > 10))
{
return defValue;
}
float intValue = defValue;
if (strValue != null)
{
bool IsFloat = new Regex(@"^([-]|[0-9])[0-9]*(\.\w*)?$").IsMatch(strValue.ToString());
if (IsFloat)
{
intValue = Convert.ToSingle(strValue);
}
}
return intValue;
}
///
/// string型转换为时间型
///
/// 要转换的字符串
/// 缺省值
/// 转换后的时间类型结果
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;
}
///
/// 判断给定的字符串(strNumber)是否是数值型
///
/// 要确认的字符串
/// 是则返加true 不是则返回 false
public static bool IsNumber(string strNumber)
{
return new Regex(@"^([0-9])[0-9]*(\.\w*)?$").IsMatch(strNumber);
}
///
/// 检测是否符合email格式
///
/// 要判断的email字符串
/// 判断结果
public static bool IsValidEmail(string strEmail)
{
return Regex.IsMatch(strEmail, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
///
/// 检测是否符合url格式,前面必需含有http://
///
///
///
/// 检测是否符合电话格式
///
///
///
/// 检测是否符合时间格式
///
///
/// 检测是否符合身份证号码格式
///
///
///
/// 检测是否符合邮编格式
///
///
///
/// MD5函数
///
/// 原始字符串
/// MD5结果
public static string MD5(string str)
{
byte[] b = Encoding.Default.GetBytes(str);
b = new MD5CryptoServiceProvider().ComputeHash(b);
string ret = "";
for (int i = 0; i < b.Length; i++)
ret += b[i].ToString("x").PadLeft(2, '0');
return ret;
}
///
/// 转换为简体中文
///
public static string ToSChinese(string str)
{
return Strings.StrConv(str, VbStrConv.SimplifiedChinese, 0);
}
///
/// 转换为繁体中文
///
public static string ToTChinese(string str)
{
return Strings.StrConv(str, VbStrConv.TraditionalChinese, 0);
}
///
/// 自定义的替换字符串函数
///
public static string ReplaceString(string SourceString, string SearchString, string ReplaceString, bool IsCaseInsensetive)
{
return Regex.Replace(SourceString, Regex.Escape(SearchString), ReplaceString, IsCaseInsensetive ? RegexOptions.IgnoreCase : RegexOptions.None);
}
///
/// 检查一个数组中所有的元素是否有包含于指定字符串的元素
///
/// 存储数据数据的字串
/// 要查找的字符串
/// 数组的分隔符
///
/// 检测是否有Sql危险字符
///
/// 要判断字符串
/// 判断结果
public static bool IsSafeSqlString(string str)
{
return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\']");
}
///
/// 改正sql语句中的转义字符
///
public static string mashSQL(string str)
{
string str2;
if (str == null)
{
str2 = "";
}
else
{
str = str.Replace("\'", "'");
str2 = str;
}
return str2;
}
///
/// 替换sql语句中的有问题符号
///
public static string ReplaceBadSQL(string str)
{
string str2;
if (str == null)
{
str2 = "";
}
else
{
str = str.Replace("'", "''");
str2 = str;
}
return str2;
}
#endregion
#region Html类
///
/// 返回 HTML 字符串的编码结果
///
/// 字符串
/// 编码结果
public static string HtmlEncode(string str)
{
// str = str.Replace("'", "''");
return HttpUtility.HtmlEncode(str);
}
///
/// 返回 HTML 字符串的解码结果
///
/// 字符串
/// 解码结果
public static string HtmlDecode(string str)
{
//str = str.Replace("''", "'");
return HttpUtility.HtmlDecode(str);
}
///
/// 替换html字符
///
public static string EncodeHtml(string strHtml)
{
if (strHtml != "")
{
strHtml = strHtml.Replace(",", "&def");
strHtml = strHtml.Replace("'", "&dot");
strHtml = strHtml.Replace(";", "&dec");
return strHtml;
}
return "";
}
///
/// 替换回车换行符为html换行符
///
public static string StrFormat(string str)
{
string str2;
if (str == null)
{
str2 = "";
}
else
{
str = str.Replace("\r\n", "
");
str = str.Replace("\n", "
");
str2 = str;
}
return str2;
}
#endregion
#region DateTime类
///
/// 返回标准日期格式string
///
public static string GetDate()
{
return DateTime.Now.ToString("yyyy-MM-dd");
}
///
/// 返回指定日期格式
///
public static string GetDate(string datetimestr, string replacestr)
{
if (datetimestr == null)
{
return replacestr;
}
if (datetimestr.Equals(""))
{
return replacestr;
}
try
{
datetimestr = Convert.ToDateTime(datetimestr).ToString("yyyy-MM-dd").Replace("1900-01-01", replacestr);
}
catch
{
return replacestr;
}
return datetimestr;
}
///
/// 返回标准时间格式string
///
public static string GetTime()
{
return DateTime.Now.ToString("HH:mm:ss");
}
///
/// 返回标准时间格式string
///
public static string GetDateTime()
{
return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
}
///
/// 返回相对于当前时间的相对天数
///
public static string GetDateTime(int relativeday)
{
return DateTime.Now.AddDays(relativeday).ToString("yyyy-MM-dd HH:mm:ss");
}
///
/// 返回标准时间格式string
///
public static string GetDateTimeF()
{
return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffffff");
}
///
/// 返回标准时间
///
public static string GetStandardDateTime(string fDateTime, string formatStr)
{
DateTime s = Convert.ToDateTime(fDateTime);
return s.ToString(formatStr);
}
///
/// 返回标准时间 yyyy-MM-dd HH:mm:ss
///
public static string GetStandardDateTime(string fDateTime)
{
return GetStandardDateTime(fDateTime, "yyyy-MM-dd HH:mm:ss");
}
///
/// 返回相差的秒数
///
///
///
///
/// 返回相差的分钟数
///
///
///
///
/// 返回相差的小时数
///
///
///
///
/// 得到网站的真实路径
///
///
/// 文件是否存在
///
/// 相对路径
///
/// 创建目录
///
/// 相对路径
/// 是否成功
public static bool CreateDirectory(string filePath)
{
if (string.IsNullOrEmpty(filePath))
return false;
filePath = HttpContext.Current.Server.MapPath(filePath);
DirectoryInfo dirInfo = new DirectoryInfo(filePath);
if (dirInfo.Exists)
return true;
try
{
Directory.CreateDirectory(filePath);
return true;
}
catch
{
return false;
}
}
#endregion
#region Number类
///
/// 将long型数值转换为Int32类型
///
///
///