在开发中经常会判断是不是手机号、是不是身份证号…等等,我们可以根据正则表达式来判断,快捷方便。所以给NSString提供扩展category方法是必须的,简单总结几个比较常用的正则表达式如下:

验证正则表达式的正确性方法

#pragma mark - 正则相关  验证正则正确性
- (BOOL)isValidateByRegex:(NSString *)regex{
    NSPredicate *pre = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex];
    return [pre evaluateWithObject:self];
}

手机号码的有效性:分电信、联通、移动和小灵通

- (BOOL)isMobileNumberClassification{

    /**
     * 手机号码
     * 移动:134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188,1705
     * 联通:130,131,132,152,155,156,185,186,1709
     * 电信:133,1349,153,180,189,1700
     */
    //NSString * MOBILE = @"^1((3//d|5[0-35-9]|8[025-9])//d|70[059])\\\\d{7}$";//手机号

    /**
     * 中国移动:China Mobile
     * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188,1705
     */
    NSString * CM =@"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\\\d|705)\\\\d{7}$";

    /**
     * 中国联通:China Unicom
     * 130,131,132,152,155,156,185,186,1709
     */
    NSString * CU = @"^1((3[0-2]|5[256]|8[56])\\\\d|709)\\\\d{7}$";

    /**
     * 中国电信:China Telecom
     * 133,1349,153,180,189,1700
     */
    NSString * CT = @"^1((33|53|8[09])\\\\d|349|700)\\\\d{7}$";
    /**
     * 大陆地区固话及小灵通
     * 区号:010,020,021,022,023,024,025,027,028,029
     * 号码:七位或八位
     */
    NSString * PHS = @"^0(10|2[0-5789]|\\\\d{3})\\\\d{7,8}$";

    //NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
    if (([self isValidateByRegex:CM])|| ([self isValidateByRegex:CU])|| ([self isValidateByRegex:CT])|| ([self isValidateByRegex:PHS])){
        return YES;
    } else {
        return NO;
    }
}

手机号有效性

- (BOOL)isMobileNumber{

   /**
    * 手机号以13、15、18、170开头,8个 \\d 数字字符
    * 小灵通 区号:010,020,021,022,023,024,025,027,028,029 还有未设置的新区号xxx
    */
    NSString *mobileNoRegex = @"^1((3\\\\d|5[0-35-9]|8[025-9])\\\\d|70[059])\\\\d{7}$";

    //除4以外的所有个位整数,不能使用[^4,\\\\d]匹配,这里是否iOSBug?
    NSString *phsRegex =@"^0(10|2[0-57-9]|\\\\d{3})\\\\d{7,8}$";

    BOOL ret = [self isValidateByRegex:mobileNoRegex];
    BOOL ret1 = [self isValidateByRegex:phsRegex];
    return (ret || ret1);
}

邮箱的有效性

- (BOOL)isEmailAddress{

    NSString *emailRegex = @"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\\\.[A-Za-z]{2,4}";
    return [self isValidateByRegex:emailRegex];
}

简单的身份证有效性

- (BOOL)simpleVerifyIdentityCardNum{
    NSString *regex2 = @"^(\\\\d{14}|\\\\d{17})(\\\\d|[xX])$";
    return [self isValidateByRegex:regex2];
}

精确的身份证号码有效性检测

+ (BOOL)accurateVerifyIDCardNumber:(NSString *)value{
    value = [value stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    int length =0;
    if (!value) {
        return NO;
    }else {
        length = (int)value.length; if (length !=15 && length !=18) {
            return NO;
        }
    }
    // 省份代码
    NSArray *areasArray =@[@"11",@"12", @"13",@"14", @"15",@"21",@"22",@"23", @"31",@"32", @"33",@"34", @"35",@"36", @"37",@"41", @"42",@"43", @"44",@"45", @"46",@"50", @"51",@"52", @"53",@"54", @"61",@"62", @"63",@"64", @"65",@"71", @"81",@"82", @"91"];
    NSString *valueStart2 = [value substringToIndex:2];
    BOOL areaFlag =NO;

    for (NSString *areaCode in areasArray) {
        if ([areaCode isEqualToString:valueStart2]) {
            areaFlag =YES;
            break;
        }
    }
    if (!areaFlag){
        return false;
    }
    NSRegularExpression *regularExpression; NSUInteger numberofMatch;
    int year = 0;
    switch (length) {
        case 15:
            year = [value substringWithRange:NSMakeRange(6,2)].intValue +1900;
            //测试出生日期的合法性
            if (year%4 ==0 || (year %100 ==0 && year %4 ==0)) {
                regularExpression = [[NSRegularExpression alloc] initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$" options:NSRegularExpressionCaseInsensitive error:nil];

            }else {
                regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$" options:NSRegularExpressionCaseInsensitive error:nil];
            }

            numberofMatch = [regularExpression numberOfMatchesInString:value options:NSMatchingReportProgress range:NSMakeRange(0, value.length)];

            if(numberofMatch >0) {
                return YES;
            }else {
                return NO;
            }
        case 18:
            year = [value substringWithRange:NSMakeRange(6,4)].intValue;
            if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
                regularExpression = [[NSRegularExpression alloc] initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$" options:NSRegularExpressionCaseInsensitive error:nil];
            }else {
                regularExpression = [[NSRegularExpression alloc] initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$" options:NSRegularExpressionCaseInsensitive error:nil];
            }
            numberofMatch = [regularExpression numberOfMatchesInString:value options:NSMatchingReportProgress range:NSMakeRange(0, value.length)];

            if(numberofMatch >0) {
                int S = ([value substringWithRange:NSMakeRange(0,1)].intValue +
                         [value substringWithRange:NSMakeRange(10,1)].intValue) *7 +
                        ([value substringWithRange:NSMakeRange(1,1)].intValue +
                         [value substringWithRange:NSMakeRange(11,1)].intValue) *9 +
                        ([value substringWithRange:NSMakeRange(2,1)].intValue +
                         [value substringWithRange:NSMakeRange(12,1)].intValue) *10 +
                        ([value substringWithRange:NSMakeRange(3,1)].intValue +
                         [value substringWithRange:NSMakeRange(13,1)].intValue) *5 +
                        ([value substringWithRange:NSMakeRange(4,1)].intValue +
                         [value substringWithRange:NSMakeRange(14,1)].intValue) *8 +
                        ([value substringWithRange:NSMakeRange(5,1)].intValue +
                         [value substringWithRange:NSMakeRange(15,1)].intValue) *4 +
                        ([value substringWithRange:NSMakeRange(6,1)].intValue +
                         [value substringWithRange:NSMakeRange(16,1)].intValue) *2 +
                        [value substringWithRange:NSMakeRange(7,1)].intValue *1 +
                        [value substringWithRange:NSMakeRange(8,1)].intValue *6 +
                        [value substringWithRange:NSMakeRange(9,1)].intValue *3;
                int Y = S %11;
                NSString *M =@"F";
                NSString *JYM =@"10X98765432";
                M = [JYM substringWithRange:NSMakeRange(Y,1)];
                // 判断校验位
                if ([M isEqualToString:[value substringWithRange:NSMakeRange(17,1)]]) {
                    return YES;
                    //检测ID的校验位
                }else {
                    return NO;
                }
            }else {
                return NO;
            }
        default: return NO;
        }

}

车牌号的有效性

- (BOOL)isCarNumber{
    //车牌号:湘K-DE829 香港车牌号码:粤Z-J499港
    NSString *carRegex = @"^[\\u4e00-\\u9fff]{1}[a-zA-Z]{1}[-][a-zA-Z_0-9]{4}[a-zA-Z_0-9_\\u4e00-\\u9fff]$";
    //其中\\u4e00-\\u9fa5表示unicode编码中汉字已编码部分,\\u9fa5-\\u9fff是保留部分,将来可能会添加
    return [self isValidateByRegex:carRegex];
}

银行卡的有效性

- (BOOL)bankCardluhmCheck{
    /** 银行卡号有效性问题Luhn算法
     *  现行 16 位银联卡现行卡号开头 6 位是 622126~622925 之间的,7 到 15 位是银行自定义的,
     *  可能是发卡分行,发卡网点,发卡序号,第 16 位是校验码。
     *  16 位卡号校验位采用 Luhm 校验方法计算:
     *  1,将未带校验位的 15 位卡号从右依次编号 1 到 15,位于奇数位号上的数字乘以 2
     *  2,将奇位乘积的个十位全部相加,再加上所有偶数位上的数字
     *  3,将加法和加上校验位能被 10 整除。
     */
    NSString * lastNum = [[self substringFromIndex:(self.length-1)] copy];//取出最后一位
    NSString * forwardNum = [[self substringToIndex:(self.length -1)] copy];//前15或18位

    NSMutableArray * forwardArr = [[NSMutableArray alloc] initWithCapacity:0];
    for (int i=0; i<forwardNum.length; i++) {
        NSString * subStr = [forwardNum substringWithRange:NSMakeRange(i, 1)];
        [forwardArr addObject:subStr];
    }

    NSMutableArray * forwardDescArr = [[NSMutableArray alloc] initWithCapacity:0];
    for (int i = (int)(forwardArr.count-1); i> -1; i--) {//前15位或者前18位倒序存进数组
        [forwardDescArr addObject:forwardArr[i]];
    }

    NSMutableArray * arrOddNum = [[NSMutableArray alloc] initWithCapacity:0];//奇数位*2的积 < 9
    NSMutableArray * arrOddNum2 = [[NSMutableArray alloc] initWithCapacity:0];//奇数位*2的积 > 9
    NSMutableArray * arrEvenNum = [[NSMutableArray alloc] initWithCapacity:0];//偶数位数组

    for (int i=0; i< forwardDescArr.count; i++) {
        NSInteger num = [forwardDescArr[i] intValue];
        if (i%2) {//偶数位
            [arrEvenNum addObject:[NSNumber numberWithInteger:num]];
        }else{//奇数位
            if (num * 2 < 9) {
                [arrOddNum addObject:[NSNumber numberWithInteger:num * 2]];
            }else{
                NSInteger decadeNum = (num * 2) / 10;
                NSInteger unitNum = (num * 2) % 10;
                [arrOddNum2 addObject:[NSNumber numberWithInteger:unitNum]];
                [arrOddNum2 addObject:[NSNumber numberWithInteger:decadeNum]];
            }
        }
    }

    __block  NSInteger sumOddNumTotal = 0;
    [arrOddNum enumerateObjectsUsingBlock:^(NSNumber * obj, NSUInteger idx, BOOL *stop) {
        sumOddNumTotal += [obj integerValue];
    }];

    __block NSInteger sumOddNum2Total = 0;
    [arrOddNum2 enumerateObjectsUsingBlock:^(NSNumber * obj, NSUInteger idx, BOOL *stop) {
        sumOddNum2Total += [obj integerValue];
    }];

    __block NSInteger sumEvenNumTotal =0 ;
    [arrEvenNum enumerateObjectsUsingBlock:^(NSNumber * obj, NSUInteger idx, BOOL *stop) {
        sumEvenNumTotal += [obj integerValue];
    }];

    NSInteger lastNumber = [lastNum integerValue];

    NSInteger luhmTotal = lastNumber + sumEvenNumTotal + sumOddNum2Total + sumOddNumTotal;

    return (luhmTotal%10 ==0)?YES:NO;
}

IP地址有效性

- (BOOL)isIPAddress{
    NSString *ipString = @"^(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d{1,2}|1\\d\\d|2[0-4]\\d|25[0-5])$";
    return [self isValidateByRegex:ipString];
}

Mac地址有效性

- (BOOL)isMacAddress{
    NSString * macAddRegex = @"([A-Fa-f\\\\d]{2}:){5}[A-Fa-f\\\\d]{2}";
    return [self isValidateByRegex:macAddRegex];
}

网址有效性

- (BOOL)isValidUrl{
    NSString *regex = @"^((http)|(https))+:[^\\\\s]+\\\\.[^\\\\s]*$";
    return [self isValidateByRegex:regex];
}

纯汉字

- (BOOL)isValidChinese{
    NSString *chineseRegex = @"^[\\u4e00-\\u9fa5]+$";
    return [self isValidateByRegex:chineseRegex];
}

邮政编码

- (BOOL)isValidPostalcode{
    NSString *postalRegex = @"^[0-8]\\\\d{5}(?!\\\\d)$";
    return [self isValidateByRegex:postalRegex];
}

工商税号

- (BOOL)isValidTaxNo{
     NSString *taxNoRegex = @"[0-9]\\\\d{13}([0-9]|X)$";
    return [self isValidateByRegex:taxNoRegex];
}

后面会持续更新。。。