iOS中常见正则表达式验证方法

在某些App应用里面需要填写用户信息（用于验证），有身份证、手机号、军官证等等。下面来跟大家分享一下各自的验证方式。

1.验证 手机号码 ，这个是对任意输入的一串数字做验证，返回一个识别结果（字符串），根据这个结果再做判断。

//判断手机号码
+ (NSString *)valiMobile:(NSString *)mobile{
  if (mobile.length != 11){
    return @"手机号码格式错误";
  }else{
    /**
     * 移动号段正则表达式
     */
    NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";
    /**
     * 联通号段正则表达式
     */
    NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";
    /**
     * 电信号段正则表达式
     */
    NSString *CT_NUM = @"^((133)|(153)|(177)|(18[0,1,9]))\\d{8}$";
    NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM_NUM];
    BOOL isMatch1 = [pred1 evaluateWithObject:mobile];
    NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU_NUM];
    BOOL isMatch2 = [pred2 evaluateWithObject:mobile];
    NSPredicate *pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT_NUM];
    BOOL isMatch3 = [pred3 evaluateWithObject:mobile];
    if (isMatch1 || isMatch2 || isMatch3) {
      return nil;
    }else{
      return @"请输入正确的手机号码";
    }
  }
  return nil;
}

2.验证军官证

//验证军官证
- (BOOL) checkOfficerCard: (NSString *) officerCard{
  //exp:政字第00111206号
  BOOL flag;
  if (officerCard.length <= 0) {
    flag = NO;
    return flag;
  }
  NSString *regex2 = @"^([\u5357|\u5317|\u6c88|\u5170|\u6210|\u6d4e|\u5e7f|\u6d77|\u7a7a|\u53c2|\u653f|\u540e|\u88c5][\u5b57][\u7b2c]\\d{8}[\u53f7])$";
  NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
  return [identityCardPredicate evaluateWithObject:officerCard];
}

3.验证身份证，这个是 真实身份证 的验证方法，具有唯一性。

//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 NO;
  }
  NSRegularExpression *regularExpression;
  NSUInteger numberofMatch;

  int year =0;
  switch (length) {
    case 15:
      year = [value substringWithRange:NSMakeRange(6,2)].intValue +1900;

      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}$"
                                     options:NSRegularExpressionCaseInsensitive
                                      error:nil];//测试出生日期的合法性
      }else {
        regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$"
                                    options:NSRegularExpressionCaseInsensitive
                                     error:nil];//测试出生日期的合法性
      }
      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]$"
                                     options:NSRegularExpressionCaseInsensitive
                                      error:nil];//测试出生日期的合法性
      }else {
        regularExpression = [[NSRegularExpression alloc] initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$"
                                     options:NSRegularExpressionCaseInsensitive
                                      error:nil];//测试出生日期的合法性
      }
      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;
  }
}

4.邮箱的验证

//邮箱验证
- (BOOL)isEmailAddress{
  NSString *emailRegex = @"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
  NSPredicate *predicate = [NSPredicate predicateWithFormat:@"self matches %@",emailRegex];
  return [predicate evaluateWithObject:self];
}

5.银行卡有效性验证。这里是给 NSString 写的分类

/** 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。
 */
- (BOOL)bankCardCheck{
  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;
}

以上简单的收录了在iOS开发中常见的正则表达式的验证方法，如果写的有问题，还请大家及时指正。