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。