正则表达式

//  RegularHelp.h
//

#import <Foundation/Foundation.h>

@interface RegularHelp : NSObject

//检测账号 （3-16位包含下划线、数字、字母其中两项）
+ (BOOL) validateUserAcount:(NSString *)str;
//检测密码（6-18位包含下划线、数字、字母其中两项）
+ (BOOL)validateUserPassWord:(NSString *)str;
//检测汉字
+ (BOOL)validateUserCharacters:(NSString *)str;
//检测身份证(15位纯数字或者17位纯数字+x)
+ (BOOL)validateUserCard:(NSString *)str;
//检验邮箱
+ (BOOL) validateUserEmail:(NSString *)str;
//检验手机号
+ (BOOL) validateUserPhone:(NSString *)str;
//检测月份
+ (BOOL) validateMoney:(NSString *)str;
//检测天数
+ (BOOL) validateDay:(NSString *)str;
//数字匹配 
+ (BOOL) validateUserAge:(NSString *)str;


@end

//
//  RegularHelp.m
//

#import "RegularHelp.h"

@implementation RegularHelp

//没使用
+ (BOOL) validateUserAge:(NSString *)str {
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^[0-9]{1,3}$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}

//检测账号 3-16位 数字 下划线 字母
+(BOOL)validateUserAcount:(NSString *)str
{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^[a-z0-9_-]{3,16}$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}

//检测密码格式
+(BOOL)validateUserPassWord:(NSString *)str
{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^[a-z0-9_-]{6,18}$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}
//检测身份证
+(BOOL)validateUserCard:(NSString *)str
{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^[0-9]{15}$|^[0-9]{17}(X|x)$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;


}
//检测汉字
+(BOOL)validateUserCharacters:(NSString *)str
{
    NSRegularExpression * regularexpression = [[NSRegularExpression alloc]
                                            initWithPattern:@"^[\u4e00-\u9fa5]{0,}$"
                                               options:NSRegularExpressionCaseInsensitive
                                               error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}

//检验邮箱格式
+ (BOOL) validateUserEmail:(NSString *)str
{
    NSRegularExpression * regularexpression = [[NSRegularExpression alloc]
                                               initWithPattern:@"\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*"
                                               options:NSRegularExpressionCaseInsensitive
                                               error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}

//校验用户手机号码
+ (BOOL) validateUserPhone:(NSString *)str
{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^1[3|4|5|7|8][0-9][0-9]{8}$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    if(numberofMatch > 0)
    {
        return YES;
    }
    return NO;
}
//验证是否是正数
+ (BOOL) validatePositiveNumber:(NSString *)str
{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^(([1-9]{1}\\d*)|([0]{1}))(\\.(\\d){1,2})?$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        NSLog(@"%@ isNumbericString: YES", str);
        return YES;
    }
    NSLog(@"%@ isNumbericString: NO", str);
    return NO;
}

// 检测月份 正确格式为："01"〜"09"和"1"〜"12"。
+ (BOOL) validateMoney:(NSString *)str{
    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^(0?[1-9]{1}|1[0-2]{1})$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    
    
       
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    
    if(numberofMatch > 0)
    {
        return YES;
    }
    return NO;
}
//检测天数
+(BOOL)validateDay:(NSString *)str
{

    NSRegularExpression *regularexpression = [[NSRegularExpression alloc]
                                              initWithPattern:@"^(0?[1-9]{1}|1[0-9]{1}|2[0-9]{1}|3[0-1]{1})$"
                                              options:NSRegularExpressionCaseInsensitive
                                              error:nil];
    
    
    
    NSUInteger numberofMatch = [regularexpression numberOfMatchesInString:str
                                                                  options:NSMatchingReportProgress
                                                                    range:NSMakeRange(0, str.length)];
    if(numberofMatch > 0){
        return YES;
    }
    return NO;
}
@end房

方法