iOS正則表達式

首先簡單介紹一下正則表達式的基本寫法及用法

\d 匹配任何一個數字，即[0-9]

\d+表示1個以上的數字

\d*標示0個或多個數字

\s 表示分隔符，包括空格、制表符和換行符

\s* 0個或多個分隔符

\w 表示字母、數字和下劃線，這里還包括Unicode字符，不同的語言里有些不同

\w{4} 表示4個非空白字符

. 表示任何一個字符，不包括換行符

.* 表示任何多個字符，當然也不包括換行符了

^([0-9]) 表示數字開頭

([0-9])$ 表示數字結尾

([0-9A-Za-z]) 表示數字字母

| 表示或的關系，如\d|\w 表示數字或字母

(.|[\r\n])* 表示任何多個字符，包括換行符，貪婪掃描

(.|[\r\n])*? 表示任何多個字符，包括換行符，懶惰掃描

(?:.|[\\r\\n])   以(?:開頭時的分組信息，表示不讀取到緩沖器里，避免rangeAtIndex調用時產生副作用，后面還會遇到這樣的(?:寫法

下面將自己寫的一些通用的正則表達式函數羅列一下，以后后續參考

@implementation TSRegularExpressionUtil
//郵箱
+ (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];
}
//手機號碼驗證
+ (BOOL) validateMobile:(NSString *)mobile
{
    //手機號以13， 15，18開頭，八個 \d 數字字符
    NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
    return [phoneTest evaluateWithObject:mobile];
}
//車牌號驗證
+ (BOOL) validateCarNo:(NSString *)carNo
{
    NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
    NSLog(@"carTest is %@",carTest);
    return [carTest evaluateWithObject:carNo];
}
//車型
+ (BOOL) validateCarType:(NSString *)CarType
{
    NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];
    return [carTest evaluateWithObject:CarType];
}
//用戶名
+ (BOOL) validateUserName:(NSString *)name
{
    NSString *userNameRegex = @"^[A-Za-z0-9]{4,20}+$";
    NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
    BOOL B = [userNamePredicate evaluateWithObject:name];
    return B;
}
//密碼
+ (BOOL) validatePassword:(NSString *)passWord
{
    NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$";
    NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];
    return [passWordPredicate evaluateWithObject:passWord];
}
//昵稱
+ (BOOL) validateNickname:(NSString *)nickname
{
    NSString *nicknameRegex = @"([\u4e00-\u9fa5]{2,5})(·[\u4e00-\u9fa5]{2,5})*";
    NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];
    return [passWordPredicate evaluateWithObject:nickname];
}
//身份證號
+ (BOOL) validateIdentityCard: (NSString *)identityCard
{
    BOOL flag;
    if (identityCard.length <= 0) {
        flag = NO;
        return flag;
    }
    NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
    NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
    return [identityCardPredicate evaluateWithObject:identityCard];
}
//銀行卡
+ (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];
}
//銀行卡后四位
+ (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