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iOS開(kāi)發(fā)驗(yàn)證判斷語(yǔ)句之正則表達(dá)式小結(jié)

更新時(shí)間：2016年12月04日 11:29:02 作者：小光頭iOS

最近在公司接手重構(gòu)一個(gè)項(xiàng)目，發(fā)現(xiàn)之前的開(kāi)發(fā)在驗(yàn)證格式這塊寫(xiě)的太亂了，到處都有相關(guān)的驗(yàn)證代碼，所以就有了這篇文章，供自己收藏也分享給有需要的朋友們參考借鑒，下面跟著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧。

前言

大家都知道開(kāi)發(fā)一直離不開(kāi)一些常用驗(yàn)證格式，比如：郵箱，手機(jī)號(hào)等等，在開(kāi)發(fā)過(guò)程中一般都會(huì)新建一個(gè)工具類，專門管理這些驗(yàn)證方式，簡(jiǎn)便開(kāi)發(fā)過(guò)程。一般都采用正則表達(dá)式的形式來(lái)做判斷，本文列舉一些項(xiàng)目中非常實(shí)用的一些正則表達(dá)式的判斷語(yǔ)句，以后開(kāi)發(fā)起來(lái)直接復(fù)制粘貼就可以，這樣大大節(jié)省了開(kāi)發(fā)時(shí)間，下面不多說(shuō)，直接上代碼。

一、驗(yàn)證移動(dòng)手機(jī)號(hào)：

+ (BOOL)isMobile:(NSString*)mobile
{
  NSString *regex = @"^1+[34578]+\d{9}";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
  return [pred evaluateWithObject:mobile];
}

二、郵箱驗(yàn)證：

+ (BOOL)isEmail:(NSString*)email
{
  NSString *regex = @"^[\\w-]+(\\.[\\w-]+)*@[\\w-]+(\\.[\\w-]+)+$";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
  return [pred evaluateWithObject:email];
}

三、整形驗(yàn)證

+ (BOOL)isPureInt:(NSString*)string{
  NSScanner* scan = [NSScanner scannerWithString:string];
  int val;
  return[scan scanInt:&val] && [scan isAtEnd];
}

四、浮點(diǎn)型驗(yàn)證

- (BOOL)isPureFloat:(NSString*)string{
  NSScanner* scan = [NSScanner scannerWithString:string];
  float val;
  return[scan scanFloat:&val] && [scan isAtEnd];
}

五、中文驗(yàn)證

+ (BOOL)isChinese:(NSString*)chinese
{
  NSString *regex = @"^[\u4e00-\u9fa5]";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
  return [pred evaluateWithObject: chinese];
}

六、網(wǎng)址URL驗(yàn)證

+ (BOOL)isURL:(NSString*)url
{
  NSString *regex = @"[a-zA-z]+://[^\s]*";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
  return [pred evaluateWithObject: url];
}

七、身份證號(hào)驗(yàn)證(比較繁瑣)

+ (BOOL)verifyIDCardNumber:(NSString *)IDCardNumber 
{ 
IDCardNumber = [IDCardNumber stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 
if ([IDCardNumber length] != 18) 
{ 
return NO; 
} 
NSString *mmdd = @”(((0[13578]|1[02])(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)(0[1-9]|[12][0-9]|30))|(02(0[1-9]|[1][0-9]|2[0-8])))”; 
NSString *leapMmdd = @”0229”; 
NSString *year = @”(19|20)[0-9]{2}”; 
NSString *leapYear = @”(19|20)(0[48]|[2468][048]|[13579][26])”; 
NSString *yearMmdd = [NSString stringWithFormat:@”%@%@”, year, mmdd]; 
NSString *leapyearMmdd = [NSString stringWithFormat:@”%@%@”, leapYear, leapMmdd]; 
NSString *yyyyMmdd = [NSString stringWithFormat:@”((%@)|(%@)|(%@))”, yearMmdd, leapyearMmdd, @”20000229”]; 
NSString *area = @”(1[1-5]|2[1-3]|3[1-7]|4[1-6]|5[0-4]|6[1-5]|82|[7-9]1)[0-9]{4}”; 
NSString *regex = [NSString stringWithFormat:@”%@%@%@”, area, yyyyMmdd , @”[0-9]{3}[0-9Xx]”];

NSPredicate *regexTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if (![regexTest evaluateWithObject:IDCardNumber])
{
  return NO;
}
int summary = ([IDCardNumber substringWithRange:NSMakeRange(0,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(10,1)].intValue) *7
+ ([IDCardNumber substringWithRange:NSMakeRange(1,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(11,1)].intValue) *9
+ ([IDCardNumber substringWithRange:NSMakeRange(2,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(12,1)].intValue) *10
+ ([IDCardNumber substringWithRange:NSMakeRange(3,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(13,1)].intValue) *5
+ ([IDCardNumber substringWithRange:NSMakeRange(4,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(14,1)].intValue) *8
+ ([IDCardNumber substringWithRange:NSMakeRange(5,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(15,1)].intValue) *4
+ ([IDCardNumber substringWithRange:NSMakeRange(6,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(16,1)].intValue) *2
+ [IDCardNumber substringWithRange:NSMakeRange(7,1)].intValue *1 + [IDCardNumber substringWithRange:NSMakeRange(8,1)].intValue *6
+ [IDCardNumber substringWithRange:NSMakeRange(9,1)].intValue *3;
NSInteger remainder = summary % 11;
NSString *checkBit = @"";
NSString *checkString = @"10X98765432";
checkBit = [checkString substringWithRange:NSMakeRange(remainder,1)];// 判斷校驗(yàn)位
return [checkBit isEqualToString:[[IDCardNumber substringWithRange:NSMakeRange(17,1)] uppercaseString]];
}

八、一般用戶名的驗(yàn)證

+ (BOOL) isUserName:(NSString *)name
{
  NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
  NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex]；  
  return [userNamePredicate evaluateWithObject:name];
}

總結(jié)

以上就是這篇文章的全部?jī)?nèi)容了，希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作能帶來(lái)一定的幫助，如果有疑問(wèn)大家可以留言交流。

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