废话不多说了,直接给大家贴实现此功能的正则表达式代码了,具体代码如下所示:
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#import <Foundation/Foundation.h>
int main() {
// ? == {0,1}
// * == {0,无穷}
// + == {1,无穷}
// \d == [0-9]
// \w == [A-Za-z_0-9]
// * 的意思是可有可无
// [a|b|c]+ 表示三个至少出现一次或多次
//检测电话号码是否正确
NSString *tel = @ "" ;
//正则表达式
NSString *regex = @ "^\\d*$" ;
// NSString *regex = @"^[0-9]{3,4}-[0-9]{7,8}$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@ "SELF MATCHES%@" ,regex]; //创建需要满足上面的正则表达式的谓词
NSLog(@ "该电话号码:%d" ,[predicate evaluateWithObject:tel]);
//用户名 (第一位必须是字母,6-16位,只能有字母,数字或下划线)
NSString *user = @ "m54355" ;
NSString *regex1 = @ "^[A-Za-z]\\w{5,15}$" ;
NSPredicate *predicate1 = [NSPredicate predicateWithFormat:@ "SELF MATCHES%@" ,regex1];
// NSLog(@"该电话号码:%d",[predicate1 evaluateWithObject:user]);
// //身份证
// NSString *user1 = @"610125199301300814";
// NSString *regex2 = @"^\\d{17}[\\dxX]$";
// NSPredicate *predicate2 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex2];
// NSLog(@"该身份证:%d",[predicate2 evaluateWithObject:user1]);
//邮箱
NSString *mailbox = @ "101707383@qq.com" ;
NSString *regex3 = @ "^[a-zA-Z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}$" ;
NSPredicate *predicate3 = [NSPredicate predicateWithFormat:@ "SELF MATCHES%@" ,regex3];
// NSLog(@"该邮箱:%d",[predicate3 evaluateWithObject:mailbox]);
//手机号
// NSString *phone = @"18709259205";
// NSString *regex4 = @"^1[3|4|5|7|8]\\d{9}$";
// NSPredicate *predicate4 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex4];
// NSLog(@"该手机:%d",[predicate4 evaluateWithObject:phone]);
if ([predicate1 evaluateWithObject:user] == 1) {
if ([predicate3 evaluateWithObject:mailbox] == 1) {
NSLog(@ "登录成功" );
}
} else {
NSLog(@ "错误" );
}
return 0;
}
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