[hibernate-issues] [Hibernate-JIRA] Updated: (HV-591) EmailValidator throws an IllegalArgumentException for long email addresses

EmailValidator throws an IllegalArgumentException for long email addresses -------------------------------------------------------------------------- Key: HV-591 URL: https://hibernate.onjira.com/browse/HV-591 Project: Hibernate Validator Issue Type: Bug Components: validators Affects Versions: 4.3.0.Final, 5.x Reporter: Marco Ramirez Labels: validation When I attempt to validate the email address below the IDN.toASCII call throws an exception because it's using the entire email address and not just the domain, eg _aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(a)hibernate.org_ In _EmailValidator.java_: {code} public boolean isValid(CharSequence value, ConstraintValidatorContext context) { if ( value == null || value.length() == 0 ) { return true; } String asciiString = IDN.toASCII( value.toString() ); //<- fails here Matcher m = pattern.matcher( asciiString ); return m.matches(); } {code} A test: {code} @Test public void testForLongEmailAddresses(){ final String longEmail = &quot;aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(a)hibernate.org&quot;; IllegalArgumentException e = null; try{ new EmailValidator().isValid(longEmail, null); }catch (IllegalArgumentException f){ e = f; } assertTrue(e == null, "IllegalArgumentException thrown while validating email address"); } {code}