正则表达：NSRegularExpression的用法

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//校验用户名

+ (BOOL) validateUserName : (NSString *) str
{
    NSString*patternStr = [NSStringstringWithFormat:@"^.{0,4}$|.{21,}|^[^A-Za-z0-9u4E00-u9FA5]|[^\wu4E00-u9FA5.-]|([_.-])1"];
   NSRegularExpression *regularexpression = [[NSRegularExpressionalloc]
                                             initWithPattern:patternStr
                                             options:NSRegularExpressionCaseInsensitive
                                             error:nil];
    NSUIntegernumberofMatch = [regularexpressionnumberOfMatchesInString:str
                                                                 options:NSMatchingReportProgress
                                                                   range:NSMakeRange(0, str.length)];

   [regularexpression release];

   if(numberofMatch > 0)
    {
       return YES;
    }
    return NO;
}

//校验用户密码
+ (BOOL) validateUserPasswd : (NSString *) str
{

   NSRegularExpression *regularexpression = [[NSRegularExpressionalloc]
                                             initWithPattern:@"^[a-zA-Z0-9]{6,16}$"
                                             options:NSRegularExpressionCaseInsensitive
                                             error:nil];
    NSUIntegernumberofMatch = [regularexpressionnumberOfMatchesInString:str
                                                                 options:NSMatchingReportProgress
                                                                   range:NSMakeRange(0, str.length)];

   [regularexpression release];

   if(numberofMatch > 0)
    {
       NSLog(@"%@ isNumbericString: YES", str);
       return YES;
    }

    NSLog(@"%@isNumbericString: NO", str);
    return NO;
}

//校验用户生日
+ (BOOL) validateUserBornDate : (NSString *) str
{

    NSString*patternStr =@"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$";
   NSRegularExpression *regularexpression = [[NSRegularExpressionalloc]
                                             initWithPattern:patternStr
                                             options:NSRegularExpressionCaseInsensitive
                                             error:nil];
    NSUIntegernumberofMatch = [regularexpressionnumberOfMatchesInString:str
                                                                 options:NSMatchingReportProgress
                                                                   range:NSMakeRange(0, str.length)];

   [regularexpression release];

   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 = [[NSRegularExpressionalloc]
                                             initWithPattern:@"((\d{11})|^((\d{7,8})|(\d{4}|\d{3})-(\d{7,8})|(\d{4}|\d{3})-(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1})|(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1}))$)"
                                             options:NSRegularExpressionCaseInsensitive
                                             error:nil];
    NSUIntegernumberofMatch = [regularexpressionnumberOfMatchesInString:str
                                                                 options:NSMatchingReportProgress
                                                                   range:NSMakeRange(0, str.length)];

   [regularexpression release];

   if(numberofMatch > 0)
    {
       NSLog(@"%@ isNumbericString: YES", str);
       return YES;
    }

    NSLog(@"%@isNumbericString: NO", str);
    return NO;
}

//校验用户邮箱
+ (BOOL) validateUserEmail : (NSString *) str
{
   NSRegularExpression *regularexpression = [[NSRegularExpressionalloc]
                                             initWithPattern:@"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"
                                             options:NSRegularExpressionCaseInsensitive
                                             error:nil];
    NSUIntegernumberofMatch = [regularexpressionnumberOfMatchesInString:str
                                                                 options:NSMatchingReportProgress
                                                                   range:NSMakeRange(0, str.length)];

   [regularexpression release];

   if(numberofMatch > 0)
    {
       NSLog(@"%@ isNumbericString: YES", str);
       return YES;
    }

    NSLog(@"%@isNumbericString: NO", str);
    return NO;
}

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