iOS正则表达式

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首先简单介绍一下正则表达式的基本写法及用法

\d 匹配任何一个数字,即[0-9]

\d+表示1个以上的数字

\d*标示0个或多个数字

\s 表示分隔符,包括空格、制表符和换行符

\s* 0个或多个分隔符

\w 表示字母、数字和下划线,这里还包括Unicode字符,不同的语言里有些不同

\w{4} 表示4个非空白字符

. 表示任何一个字符,不包括换行符

.* 表示任何多个字符,当然也不包括换行符了

^([0-9]) 表示数字开头

([0-9])$ 表示数字结尾

([0-9A-Za-z]) 表示数字字母

| 表示或的关系,如\d|\w 表示数字或字母

(.|[\r\n])* 表示任何多个字符,包括换行符,贪婪扫描

(.|[\r\n])*? 表示任何多个字符,包括换行符,懒惰扫描

(?:.|[\\r\\n])   以(?:开头时的分组信息,表示不读取到缓冲器里,避免rangeAtIndex调用时产生副作用,后面还会遇到这样的(?:写法

 

下面将自己写的一些通用的正则表达式函数罗列一下,以后后续参考

@implementation TSRegularExpressionUtil
//邮箱
+ (BOOL) validateEmail:(NSString *)email
{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
//手机号码验证
+ (BOOL) validateMobile:(NSString *)mobile
{
//手机号以13, 15,18开头,八个 \d 数字字符
NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
return [phoneTest evaluateWithObject:mobile];
}
//车牌号验证
+ (BOOL) validateCarNo:(NSString *)carNo
{
NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";
NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
NSLog(@"carTest is %@",carTest);
return [carTest evaluateWithObject:carNo];
}
//车型
+ (BOOL) validateCarType:(NSString *)CarType
{
NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";
NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];
return [carTest evaluateWithObject:CarType];
}
//用户名
+ (BOOL) validateUserName:(NSString *)name
{
NSString *userNameRegex = @"^[A-Za-z0-9]{4,20}+$";
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
BOOL B = [userNamePredicate evaluateWithObject:name];
return B;
}
//密码
+ (BOOL) validatePassword:(NSString *)passWord
{
NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$";
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];
return [passWordPredicate evaluateWithObject:passWord];
}
//昵称
+ (BOOL) validateNickname:(NSString *)nickname
{
NSString *nicknameRegex = @"([\u4e00-\u9fa5]{2,5})(·[\u4e00-\u9fa5]{2,5})*";
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];
return [passWordPredicate evaluateWithObject:nickname];
}
//身份证号
+ (BOOL) validateIdentityCard: (NSString *)identityCard
{
BOOL flag;
if (identityCard.length <= 0) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [identityCardPredicate evaluateWithObject:identityCard];
}
//银行卡
+ (BOOL) validateBankCardNumber: (NSString *)bankCardNumber
{
BOOL flag;
if (bankCardNumber.length <= 0) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{15,30})";
NSPredicate *bankCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [bankCardPredicate evaluateWithObject:bankCardNumber];
}
//银行卡后四位
+ (BOOL) validateBankCardLastNumber: (NSString *)bankCardNumber
{
BOOL flag;
if (bankCardNumber.length != 4) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{4})";
NSPredicate *bankCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [bankCardPredicate evaluateWithObject:bankCardNumber];
}
//CVN
+ (BOOL) validateCVNCode: (NSString *)cvnCode
{
BOOL flag;
if (cvnCode.length <= 0) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{3})";
NSPredicate *cvnCodePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [cvnCodePredicate evaluateWithObject:cvnCode];
}
//month
+ (BOOL) validateMonth: (NSString *)month
{
BOOL flag;
if (!month.length == 2) {
flag = NO;
return flag;
}
NSString *regex2 = @"(^(0)([0-9])$)|(^(1)([0-2])$)";
NSPredicate *monthPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [monthPredicate evaluateWithObject:month];
}
//month
+ (BOOL) validateYear: (NSString *)year
{
BOOL flag;
if (!year.length == 2) {
flag = NO;
return flag;
}
NSString *regex2 = @"^([1-3])([0-9])$";
NSPredicate *yearPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [yearPredicate evaluateWithObject:year];
}
//verifyCode
+ (BOOL) validateVerifyCode: (NSString *)verifyCode
{
BOOL flag;
if (!verifyCode.length == 6) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{6})";
NSPredicate *verifyCodePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [verifyCodePredicate evaluateWithObject:verifyCode];
}
@end

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