常用过滤

作者: 南镇s | 来源:发表于2015-10-20 01:45 被阅读100次

常用选择器测试代码
SQLAlchemy（二）
JavaWeb Filter
Revit过滤器
一道简单的注入思考
2018-03-29
HBase过滤器（二）
常用过滤
Java8 中 List 转 Map(Collectors.to
Django模板过滤器

(1)对NSArray进行过滤

NSArray *array = [[NSArray alloc]initWithObjects:@"beijing",@"shanghai",@"guangzou",@"wuhan", nil];  
NSString *string = @"ang";  
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF CONTAINS %@",string];  
NSLog(@"%@",[array filteredArrayUsingPredicate:pred]);

(2)判断字符串首字母是否为字母

NSString *regex = @"[A-Za-z]+";  
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];  
  
if ([predicate evaluateWithObject:aString]) {  
}

(3)字符串替换

NSError* error = NULL;  
NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:@"(encoding=\")[^\"]+(\")"  
                                                                            options:0  
                                                                            error:&error];  
NSString* sample = @"<xml encoding=\"abc\"></xml><xml encoding=\"def\"></xml><xml encoding=\"ttt\"></xml>";  
NSLog(@"Start:%@",sample);  
NSString* result = [regex stringByReplacingMatchesInString:sample  
                                                      options:0  
                                                       range:NSMakeRange(0, sample.length)  
                                                      withTemplate:@"$1utf-8$2"];  
NSLog(@"Result:%@", result);

(4)截取字符串如下

//组装一个字符串，需要把里面的网址解析出来  
NSString *urlString=@"<meta/><link/><title>1Q84 BOOK1</title></head><body>";  
  
//NSRegularExpression类里面调用表达的方法需要传递一个NSError的参数。下面定义一个    
NSError *error;  
  
//http+:[^\\s]* 这个表达式是检测一个网址的。(?<=title\>).*(?=</title)截取html文章中的<title></title>中内文字的正则表达式  
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(?<=title\\>).*(?=</title)" options:0 error:&error];  
  
if (regex != nil) {  
    NSTextCheckingResult *firstMatch=[regex firstMatchInString:urlString options:0 range:NSMakeRange(0, [urlString length])];  
      
    if (firstMatch) {  
        NSRange resultRange = [firstMatch rangeAtIndex:0];  
          
        //从urlString当中截取数据  
        NSString *result=[urlString substringWithRange:resultRange];  
        //输出结果  
        NSLog(@"->%@<-",result);  
    }  
      
}

(5)判断手机号码，电话号码函数

// 正则判断手机号码地址格式
- (BOOL)isMobileNumber:(NSString *)mobileNum
{
       /**
        * 手机号码
        * 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
        * 联通：130,131,132,152,155,156,185,186
        * 电信：133,1349,153,180,189
        */
       NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
       /**
        10         * 中国移动：China Mobile
        11         * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
        12         */
       NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";
       /**
        15         * 中国联通：China Unicom
        16         * 130,131,132,152,155,156,185,186
        17         */
       NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";
       /**
        20         * 中国电信：China Telecom
        21         * 133,1349,153,180,189
        22         */
       NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";
       /**
        25         * 大陆地区固话及小灵通
        26         * 区号：010,020,021,022,023,024,025,027,028,029
        27         * 号码：七位或八位
        28         */
      // NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";
    
     NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
     NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
     NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
     NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
    
    if (([regextestmobile evaluateWithObject:mobileNum] == YES)
    || ([regextestcm evaluateWithObject:mobileNum] == YES)
    || ([regextestct evaluateWithObject:mobileNum] == YES)
    || ([regextestcu evaluateWithObject:mobileNum] == YES))
    {
        if([regextestcm evaluateWithObject:mobileNum] == YES) {
          NSLog(@"China Mobile");
        } else if([regextestct evaluateWithObject:mobileNum] == YES) {
          NSLog(@"China Telecom");
        } else if ([regextestcu evaluateWithObject:mobileNum] == YES) {
          NSLog(@"China Unicom");
        } else {
          NSLog(@"Unknow");
        }
        return YES;
    }
    else 
    {
        return NO;
    }
}

(6)邮箱验证、电话号码验证

是否是有效的正则表达式

+(BOOL)isValidateRegularExpression:(NSString *)strDestination byExpression:(NSString *)strExpression

{

   NSPredicate *predicate = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", strExpression];  

   return [predicate evaluateWithObject:strDestination];

}

//验证email
+(BOOL)isValidateEmail:(NSString *)email {

   NSString *strRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{1,5}";

   BOOL rt = [CommonTools isValidateRegularExpression:email byExpression:strRegex];

   return rt;

}

//验证电话号码
+(BOOL)isValidateTelNumber:(NSString *)number {

   NSString *strRegex = @"[0-9]{1,20}";

   BOOL rt = [CommonTools isValidateRegularExpression:number byExpression:strRegex];

   return rt;

}