iOS开发验证判断语句之正则表达式小结
作者：小光头iOS
最近在公司接手重构一个项目，发现之前的开发在验证格式这块写的太乱了，到处都有相关的验证代码，所以就有了这篇文章，供自己收藏也分享给有需要的朋友们参考借鉴，下面跟着小编来一起学习学习吧。
前言
大家都知道开发一直离不开一些常用验证格式，比如：邮箱，手机号等等，在开发过程中一般都会新建一个工具类，专门管理这些验证方式，简便开发过程。一般都采用正则表达式的形式来做判断，本文列举一些项目中非常实用的一些正则表达式的判断语句，以后开发起来直接复制粘贴就可以，这样大大节省了开发时间，下面不多说，直接上代码。
一、验证移动手机号：
+ (BOOL)isMobile:(NSString*)mobile
{
NSString *regex = @"^1+[34578]+\d{9}";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject:mobile];
}
二、邮箱验证：
+ (BOOL)isEmail:(NSString*)email
{
NSString *regex = @"^[\\w-]+(\\.[\\w-]+)*@[\\w-]+(\\.[\\w-]+)+$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject:email];
}
三、整形验证
+ (BOOL)isPureInt:(NSString*)string{
NSScanner* scan = [NSScanner scannerWithString:string];
int val;
return[scan scanInt:&val] && [scan isAtEnd];
}
四、浮点型验证
- (BOOL)isPureFloat:(NSString*)string{
NSScanner* scan = [NSScanner scannerWithString:string];
float val;
return[scan scanFloat:&val] && [scan isAtEnd];
}
五、中文验证
+ (BOOL)isChinese:(NSString*)chinese
{
NSString *regex = @"^[\u4e00-\u9fa5]";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject: chinese];
}
六、网址URL验证
+ (BOOL)isURL:(NSString*)url
{
NSString *regex = @"[a-zA-z]+://[^\s]*";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject: url];
}
七、身份证号验证(比较繁琐)
+ (BOOL)verifyIDCardNumber:(NSString *)IDCardNumber
{
IDCardNumber = [IDCardNumber stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
if ([IDCardNumber length] != 18)
{
return NO;
}
NSString *mmdd = @”(((0[13578]|1[02])(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)(0[1-9]|[12][0-9]|30))|(02(0[1-9]|[1][0-9]|2[0-8])))”;
NSString *leapMmdd = @”0229”;
NSString *year = @”(19|20)[0-9]{2}”;
NSString *leapYear = @”(19|20)(0[48]|[2468][048]|[13579][26])”;
NSString *yearMmdd = [NSString stringWithFormat:@”%@%@”, year, mmdd];
NSString *leapyearMmdd = [NSString stringWithFormat:@”%@%@”, leapYear, leapMmdd];
NSString *yyyyMmdd = [NSString stringWithFormat:@”((%@)|(%@)|(%@))”, yearMmdd, leapyearMmdd, @”20000229”];
NSString *area = @”(1[1-5]|2[1-3]|3[1-7]|4[1-6]|5[0-4]|6[1-5]|82|[7-9]1)[0-9]{4}”;
NSString *regex = [NSString stringWithFormat:@”%@%@%@”, area, yyyyMmdd , @”[0-9]{3}[0-9Xx]”];
NSPredicate *regexTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if (![regexTest evaluateWithObject:IDCardNumber])
{
return NO;
}
int summary = ([IDCardNumber substringWithRange:NSMakeRange(0,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(10,1)].intValue) *7
+ ([IDCardNumber substringWithRange:NSMakeRange(1,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(11,1)].intValue) *9
+ ([IDCardNumber substringWithRange:NSMakeRange(2,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(12,1)].intValue) *10
+ ([IDCardNumber substringWithRange:NSMakeRange(3,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(13,1)].intValue) *5
+ ([IDCardNumber substringWithRange:NSMakeRange(4,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(14,1)].intValue) *8
+ ([IDCardNumber substringWithRange:NSMakeRange(5,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(15,1)].intValue) *4
+ ([IDCardNumber substringWithRange:NSMakeRange(6,1)].intValue + [IDCardNumber substringWithRange:NSMakeRange(16,1)].intValue) *2
+ [IDCardNumber substringWithRange:NSMakeRange(7,1)].intValue *1 + [IDCardNumber substringWithRange:NSMakeRange(8,1)].intValue *6
+ [IDCardNumber substringWithRange:NSMakeRange(9,1)].intValue *3;
NSInteger remainder = summary % 11;
NSString *checkBit = @"";
NSString *checkString = @"10X98765432";
checkBit = [checkString substringWithRange:NSMakeRange(remainder,1)];// 判断校验位
return [checkBit isEqualToString:[[IDCardNumber substringWithRange:NSMakeRange(17,1)] uppercaseString]];
}
八、一般用户名的验证
+ (BOOL) isUserName:(NSString *)name
{
NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex]；
return [userNamePredicate evaluateWithObject:name];
}
总结
以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流。