자바 이메일 검사

if(StringUtils.isEmpty(email) == true)
	throw new RestapiInvalidRequestException(CustomErrorCode.Email_Blank, CustomErrorMessgae.emailBlank);

if(email.matches(Constants.emailRegExp) == false)
	throw new RestapiInvalidRequestException(CustomErrorCode.Email_Invalid, CustomErrorMessgae.emailInvalid);

이메일이 빈칸인지, 이메일 형식이 맞는지 검사했다.

 

public static final String emailRegExp = "(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])";

 

 

참고 사이트

http://emailregex.com/

Email Address Regular Expression That 99.99% Works.