使用特殊字符时的电子邮件正则表达式问题 [英] Email Regular expression issue while using special characters

问题描述

我创建了以下正则表达式来验证我的电子邮件

I have created the following regular expression for validating my email

- (BOOL)isValidEmail
{
    BOOL stricterFilter = YES;
    NSString *stricterFilterString = @"[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}";
    NSString *laxString = @".+@([A-Za-z0-9]+\\.)+[A-Za-z]{2}[A-Za-z]*";
    NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:self];
}

但是当我输入以下内容时它失败了:

But it fails when i enter following:

b. !@#$%^ [e-mail]

我的正则表达式有问题吗?

Is there any issue with my regular expression?

推荐答案

试试这个.这对我来说很完美.

Try this. It's work perfect for me.

 NSString *mailreg=@"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *mailtest=[NSPredicate predicateWithFormat:@"SELF MATCHES %@",mailreg];
return [mailtest evaluateWithObject:checkString];

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