iOS开发收集——验证判断语句·正则表达式
SanDunbabin
8年前
<p>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，故而，写了这篇文章，供自己收藏，也分享给大家。</p> <p>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，不多说，直接上代码。</p> <p><strong>1.验证移动手机号：</strong></p> <pre> <code class="language-objectivec">+ (BOOL)isMobile:(NSString*)mobile { NSString *regex = @"^1+[34578]+\d{9}"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; return [pred evaluateWithObject:mobile]; }</code></pre> <p><strong>2.邮箱验证：</strong></p> <pre> <code class="language-objectivec">+ (BOOL)isEmail:(NSString*)email { NSString *regex = @"^[\\w-]+(\\.[\\w-]+)*@[\\w-]+(\\.[\\w-]+)+$"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; return [pred evaluateWithObject:email]; }</code></pre> <p><strong>3.整形验证</strong></p> <pre> <code class="language-objectivec">+ (BOOL)isPureInt:(NSString*)string{ NSScanner* scan = [NSScanner scannerWithString:string]; int val; return[scan scanInt:&val] && [scan isAtEnd]; }</code></pre> <p><strong>4.浮点型验证</strong></p> <pre> <code class="language-objectivec">- (BOOL)isPureFloat:(NSString*)string{ NSScanner* scan = [NSScanner scannerWithString:string]; float val; return[scan scanFloat:&val] && [scan isAtEnd]; }</code></pre> <p><strong>5.中文验证</strong></p> <pre> <code class="language-objectivec">+ (BOOL)isChinese:(NSString*)chinese { NSString *regex = @"^[\u4e00-\u9fa5]"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; return [pred evaluateWithObject: chinese]; }</code></pre> <p><strong>6.网址URL验证</strong></p> <pre> <code class="language-objectivec">+ (BOOL)isURL:(NSString*)url { NSString *regex = @"[a-zA-z]+://[^\s]*"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; return [pred evaluateWithObject: url]; }</code></pre> <p><strong>7.身份证号验证(比较繁琐)</strong></p> <pre> <code class="language-objectivec">+ (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]]; }</code></pre> <p><strong>8.一般用户名的验证</strong></p> <pre> <code class="language-objectivec">+ (BOOL) isUserName:(NSString *)name { NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$"; NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex]； return [userNamePredicate evaluateWithObject:name]; }</code></pre> <p> </p> <p>来自：http://www.jianshu.com/p/35865204d037</p> <p> </p>