IOS开发中实用的正则表达式

来源：互联网发布：开普勒第一定律知乎编辑：程序博客网时间：2024/06/05 21:50

正则表达式：又称正规表示法、常规表示法（英语：Regular Expression，在代码中常简写为regex、regexp或RE），计算机科学的一个概念。

这里介绍的正则表达式有：邮箱号验证；手机号验证；身份证验证；汽车牌号验证；用户名验证；密码验证；昵称验证。

Manager.h文件

#import <Foundation/Foundation.h>

@interface Manager : NSObject

//验证邮箱
+ (BOOL)validateEmail:(NSString *)email;

//验证手机
+ (BOOL)validateMobile:(NSString *)mobile;

//验证汽车
+ (BOOL)validateCarNo:(NSString *)carNo;

//验证用户名
+ (BOOL)validateUserName:(NSString *)name;

//验证密码
+ (BOOL)validatePassword:(NSString *)passWord;

//验证昵称
+ (BOOL)validateNickname:(NSString *)nickname;

//验证身份证
+ (BOOL)validateIdentityCard: (NSString *)identityCard;

@end

Manager.m文件

#import "Manager.h"

@implementation Manager

//邮箱验证

+ (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];

}

//手机号码验证

+ (BOOL)validateMobile:(NSString *)mobile

{

//手机号以13， 15，18开头，八个 \d 数字字符

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];

}

//车牌号验证

+ (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];

}

//车型验证

+ (BOOL)validateCarType:(NSString *)CarType

{

NSString *CarTypeRegex =@"^[\u4E00-\u9FFF]+$";

NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];

return [carTest evaluateWithObject:CarType];

}

//用户名验证

+ (BOOL)validateUserName:(NSString *)name

{

NSString *userNameRegex =@"^[A-Za-z0-9]{6,20}+$";

NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];

BOOL B = [userNamePredicate evaluateWithObject:name];

return B;

}

//密码验证

+ (BOOL) validatePassword:(NSString *)passWord

{

NSString *passWordRegex =@"^[a-zA-Z0-9]{6,20}+$";

NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];

return [passWordPredicate evaluateWithObject:passWord];

}

//昵称验证

+ (BOOL) validateNickname:(NSString *)nickname

{

NSString *nicknameRegex =@"^[\u4e00-\u9fa5]{4,8}$";

NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];

return [passWordPredicate evaluateWithObject:nickname];

}

//身份证号验证

+ (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];

}

@end

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