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C#

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using System;
using System.Linq;
using System.Text.RegularExpressions;
namespace Myshipping.Core;
/// <summary>
/// 字符串验证帮助类
/// </summary>
public static class ValidatorUtil
{
#region 验证输入字符串为数字(带小数)
/// <summary>
/// 验证输入字符串为带小数点正数
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsNumber(this string str)
{
return Regex.IsMatch(str, "^([0]|([1-9]+\\d{0,}?))(.[\\d]+)?$");
}
/// <summary>
/// 验证输入字符串为带小数点正负数
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsNumberic(this string str)
{
return Regex.IsMatch(str, "^-?\\d+$|^(-?\\d+)(\\.\\d+)?$");
}
#endregion
#region 验证中国电话格式是否有效格式010-85849685
/// <summary>
/// 验证中国电话格式是否有效格式010-85849685
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsTel(this string str)
{
return Regex.IsMatch(str, @"^(0[0-9]{2,3}\-)?([2-9][0-9]{6,7})+(\-[0-9]{1,4})?$", RegexOptions.IgnoreCase);
}
#endregion
#region 验证输入字符串为电话号码
/// <summary>
/// 验证输入字符串为电话号码
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsPhone(this string str)
{
return Regex.IsMatch(str, @"(^(\d{2,4}[-_—]?)?\d{3,8}([-_—]?\d{3,8})?([-_—]?\d{1,7})?$)|(^0?1[35]\d{9}$)");
//弱一点的验证: @"\d{3,4}-\d{7,8}"
}
#endregion
#region 验证是否是有效传真号码
/// <summary>
/// 验证是否是有效传真号码
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsFax(this string str)
{
return Regex.IsMatch(str, @"^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$");
}
#endregion
#region 验证手机号是否合法
/// <summary>
/// 验证手机号是否合法 号段为13,14,15,16,17,18,19 086开头将自动识别
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsMobile(this string str)
{
if (!str.StartsWith("1"))
{
str = str.TrimStart('8', '6').TrimStart('0');
}
return Regex.IsMatch(str, @"^(13|14|15|16|17|18|19)\d{9}$");
}
#endregion
#region 验证身份证是否有效
/// <summary>
/// 验证身份证是否有效
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsIdCard(this string str)
{
return str.Length switch
{
18 => str.IsIdCard18(),
15 => str.IsIdCard15(),
_ => false
};
}
/// <summary>
/// 验证输入字符串为18位的身份证号码
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsIdCard18(this string str)
{
if (long.TryParse(str.Remove(17), out var n) == false || n < Math.Pow(10, 16) ||
long.TryParse(str.Replace('x', '0').Replace('X', '0'), out n) == false)
{
return false; //数字验证
}
const string address =
"11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
if (address.IndexOf(str.Remove(2), StringComparison.Ordinal) == -1)
{
return false; //省份验证
}
var birth = str.Substring(6, 8).Insert(6, "-").Insert(4, "-");
if (DateTime.TryParse(birth, out _) == false)
{
return false; //生日验证
}
var arrVarIfyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
var wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
var ai = str.Remove(17).ToCharArray();
var sum = 0;
for (var i = 0; i < 17; i++)
{
sum += int.Parse(wi[i]) * int.Parse(ai[i].ToString());
}
// ReSharper disable once UselessBinaryOperation
Math.DivRem(sum, 11, out var y);
return arrVarIfyCode[y] == str.Substring(17, 1).ToLower();
}
/// <summary>
/// 验证输入字符串为15位的身份证号码
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsIdCard15(this string str)
{
if (long.TryParse(str, out var n) == false || n < Math.Pow(10, 14))
{
return false; //数字验证
}
const string address =
"11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
if (address.IndexOf(str.Remove(2), StringComparison.Ordinal) == -1)
{
return false; //省份验证
}
var birth = str.Substring(6, 6).Insert(4, "-").Insert(2, "-");
return DateTime.TryParse(birth, out _);
}
#endregion
#region 验证是否是有效邮箱地址
/// <summary>
/// 验证是否是有效邮箱地址
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsEmail(this string str)
{
return Regex.IsMatch(str,
@"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
/// <summary>
/// 验证是否是有效QQ邮箱地址
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsQqEmail(this string str)
{
return Regex.IsMatch(str, @"[1-9]\d{4,10}@qq\.com");
}
#endregion
#region 验证是否只含有汉字
/// <summary>
/// 验证是否只含有汉字
/// </summary>
/// <param name="strLn">输入字符</param>
/// <returns></returns>
public static bool IsOnlyChinese(this string strLn)
{
return Regex.IsMatch(strLn, @"^[\u4e00-\u9fa5]+$");
}
#endregion
#region 是否有多余的字符 防止SQL注入
/// <summary>
/// 是否有多余的字符 防止SQL注入
/// </summary>
/// <param name="str">输入字符</param>
/// <returns></returns>
public static bool IsBadString(this string str)
{
if (string.IsNullOrEmpty(str))
return false;
//列举一些特殊字符串
const string badChars =
"@,*,#,$,!,+,',=,--,%,^,&,?,(,), <,>,[,],{,},/,\\,;,:,\",\"\",delete,update,drop,alert,select";
var arraryBadChar = badChars.Split(',');
return arraryBadChar.Any(t => !str.Contains(t));
}
#endregion
#region 是否由数字、26个英文字母或者下划线組成的字串
/// <summary>
/// 是否由数字、26个英文字母或者下划线組成的字串
/// </summary>
/// <param name="str">输入字符</param>
/// <returns></returns>
public static bool IsNzx(this string str)
{
return Regex.Match(str, "^[0-9a-zA-Z_]+$").Success;
}
#endregion
#region 由数字、26个英文字母、汉字組成的字串
/// <summary>
/// 由数字、26个英文字母、汉字組成的字串
/// </summary>
/// <param name="str">输入字符</param>
/// <returns></returns>
public static bool IsSzzmChinese(this string str)
{
return Regex.Match(str, @"^[0-9a-zA-Z\u4e00-\u9fa5]+$").Success;
}
#endregion
#region 由数字、26个英文字母組成的字串
/// <summary>
/// 是否由数字、26个英文字母組成的字串
/// </summary>
/// <param name="str">输入字符</param>
/// <returns></returns>
public static bool IsSzzm(this string str)
{
return Regex.Match(str, @"^[0-9a-zA-Z]+$").Success;
}
#endregion
#region 验证输入字符串为邮政编码
/// <summary>
/// 验证输入字符串为邮政编码
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
public static bool IsPostCode(this string str)
{
return Regex.IsMatch(str, @"\d{6}");
}
#endregion
#region 检查对象的输入长度
/// <summary>
/// 检查对象的输入长度
/// </summary>
/// <param name="str">输入字符</param>
/// <param name="length">指定的长度</param>
/// <returns>false 太长true -太短</returns>
public static bool CheckLength(this string str, int length)
{
if (str.Length > length)
{
return false; //长度太长
}
return str.Length >= length;
}
#endregion
#region 判断用户输入是否为日期
/// <summary>
/// 判断用户输入是否为日期
/// </summary>
/// <param name="str">输入字符</param>
/// <returns>返回一个bool类型的值</returns>
/// <remarks>
/// 可判断格式如下(其中-可替换为/,不影响验证)
/// YYYY | YYYY-MM | YYYY-MM-DD | YYYY-MM-DD HH:MM:SS | YYYY-MM-DD HH:MM:SS.FFF
/// </remarks>
public static bool IsDateTime(this string str)
{
if (null == str)
{
return false;
}
const string regexDate =
@"[1-2]{1}[0-9]{3}((-|\/|\.){1}(([0]?[1-9]{1})|(1[0-2]{1}))((-|\/|\.){1}((([0]?[1-9]{1})|([1-2]{1}[0-9]{1})|(3[0-1]{1})))( (([0-1]{1}[0-9]{1})|2[0-3]{1}):([0-5]{1}[0-9]{1}):([0-5]{1}[0-9]{1})(\.[0-9]{3})?)?)?)?$";
if (!Regex.IsMatch(str, regexDate))
return false;
//以下各月份日期验证,保证验证的完整性
int indexY;
int indexM;
int indexD;
if (-1 != (indexY = str.IndexOf("-", StringComparison.Ordinal)))
{
indexM = str.IndexOf("-", indexY + 1, StringComparison.Ordinal);
indexD = str.IndexOf(":", StringComparison.Ordinal);
}
else
{
indexY = str.IndexOf("/", StringComparison.Ordinal);
indexM = str.IndexOf("/", indexY + 1, StringComparison.Ordinal);
indexD = str.IndexOf(":", StringComparison.Ordinal);
}
//不包含日期部分直接返回true
if (-1 == indexM)
return true;
if (-1 == indexD)
{
indexD = str.Length + 3;
}
var iYear = Convert.ToInt32(str.Substring(0, indexY));
var iMonth = Convert.ToInt32(str.Substring(indexY + 1, indexM - indexY - 1));
var iDate = Convert.ToInt32(str.Substring(indexM + 1, indexD - indexM - 4));
//判断月份日期
if ((iMonth < 8 && 1 == iMonth % 2) || (iMonth > 8 && 0 == iMonth % 2))
{
if (iDate < 32)
return true;
}
else
{
if (iMonth != 2)
{
if (iDate < 31)
return true;
}
else
{
//闰年
if ((0 == iYear % 400) || (0 == iYear % 4 && 0 < iYear % 100))
{
if (iDate < 30)
return true;
}
else
{
if (iDate < 29)
return true;
}
}
}
return false;
}
#endregion
}