Oc 正则表达式 demo

控制器1: ViewController.m

#import "ViewController.h"
#import "SHRegexPatternTool.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //1.类方法
    NSLog(@"我是数字--类方法-->%d",[SHRegexPatternTool validateBankCardNumber:@"6214830115447426"]);
    NSLog(@"我是邮箱--类方法-->%d",[SHRegexPatternTool validateEmail:@"[email protected]"]);
    NSLog(@"我是汉字中文--类方法-->%d",[SHRegexPatternTool validateCustomRegex:@"^[\u4E00-\u9FA5]*$" TargetString:@"我只是中文"]);
    
    //2.实例方法
    SHRegexPatternTool *tool = [[SHRegexPatternTool alloc] init];
    NSLog(@"我是数字--实例方法-->%d",[tool validateIsValidQQ:@"1383478"]);
    NSLog(@"我是邮箱--实例方法-->%d",[tool validateIsValidMailbox:@"[email protected]"]);
    NSLog(@"我是汉字中文--实例方法-->%d",[tool validateCustomRegex:@"^[\u4E00-\u9FA5]*$" TargetString:@"我只是中文"]);
}

@end

控制器2: SHRegexPatternTool.h

#import 

@interface SHRegexPatternTool : NSObject

//============================ 实例化方法 ====================================//

/**
 *  验证字符串是否为合法的邮箱email
 *
 *  @param targetString 目标字符串
 *
 *  @return YES/NO
 */
-(BOOL)validateIsValidMailbox:(NSString *)targetString;

/**
 *  验证QQ号
 *
 *  @param targetString 目标字符串
 *
 *  @return YES/NO
 */
-(BOOL)validateIsValidQQ:(NSString *)targetString;

/**
 *  实例方法自定义正则验证
 *
 *  @param customRegex  自定义的正则表达式
 *  @param targetString 目标字符串
 *
 *  @return YES/NO
 */
- (BOOL)validateCustomRegex:(NSString *)customRegex TargetString:(NSString *)targetString;


//================================ 类方法 ==================================//
/**
 *  验证邮箱
 *
 *  @param email 邮箱
 *
 *  @return YES/NO
 */
+ (BOOL)validateEmail:(NSString *)email;

/**
 *  验证银行卡号
 *
 *  @param bankCardNumber 银行卡号
 *
 *  @return YES/NO
 */
+ (BOOL)validateBankCardNumber:(NSString *)bankCardNumber;

/**
 *  类方法自定义正则验证
 *
 *  @param customRegex  自定义的正则表达式
 *  @param targetString 目标字符串
 *
 *  @return YES/NO
 */
+ (BOOL)validateCustomRegex:(NSString *)customRegex TargetString:(NSString *)targetString;

控制器2: SHRegexPatternTool.m

#import "SHRegexPatternTool.h"

@implementation SHRegexPatternTool

//============================ 实例化方法 ====================================//
//验证字符串是否为有效的邮箱email
-(BOOL)validateIsValidMailbox:(NSString *)targetString{
    
    //NSString *regex = @"^([w-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([w-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$";
    NSString *regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    return [self regexPatternResultWithRegex:regex TargetString:targetString];
}

//验证QQ号
-(BOOL)validateIsValidQQ:(NSString *)targetString{
    
    NSString *regex = @"^[1-9]*[1-9][0-9]*$";
    return [self regexPatternResultWithRegex:regex TargetString:targetString];
}

//实例方法自定义正则验证
- (BOOL)validateCustomRegex:(NSString *)customRegex TargetString:(NSString *)targetString{
    
    return [self regexPatternResultWithRegex:customRegex TargetString:targetString];
}

//====================================类方法========================================//

//邮箱
+ (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];
}


//银行卡
+ (BOOL)validateBankCardNumber: (NSString *)bankCardNumber
{
    BOOL flag;
    if (bankCardNumber.length <= 0) {
        flag = NO;
        return flag;
    }
    NSString *regex2 = @"^(\\d{15,30})";
    NSPredicate *bankCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
    return [bankCardPredicate evaluateWithObject:bankCardNumber];
}

// 类方法自定义正则验证
+ (BOOL)validateCustomRegex:(NSString *)customRegex TargetString:(NSString *)targetString{
    
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",customRegex];
    return [predicate evaluateWithObject:targetString];
}

@end