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From "Martin Uhlir (JIRA)" <j...@apache.org>
Subject [jira] [Created] (WW-3885) Invalid email address validation (client side). EmailValidator regex implementation doesn't match documentation.
Date Sun, 07 Oct 2012 11:18:02 GMT
Martin Uhlir created WW-3885:
--------------------------------

             Summary: Invalid email address validation (client side). EmailValidator regex
implementation doesn't match documentation.
                 Key: WW-3885
                 URL: https://issues.apache.org/jira/browse/WW-3885
             Project: Struts 2
          Issue Type: Bug
          Components: Core Interceptors, Documentation
    Affects Versions: 2.3.4.1
            Reporter: Martin Uhlir


EmailValidator documentation specifies following regular expression to validate email addresses:
\\b(^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@([A-Za-z0-9-])+((\\.com)|(\\.net)|(\\.org)|(\\.info)|(\\.edu)|(\\.mil)|(\\.gov)|(\\.biz)|(\\.ws)|(\\.us)|(\\.tv)|(\\.cc)|(\\.aero)|(\\.arpa)|(\\.coop)|(\\.int)|(\\.jobs)|(\\.museum)|(\\.name)|(\\.pro)|(\\.travel)|(\\.nato)|(\\..{2,3})|(\\..{2,3}\\..{2,3}))$)\\b

but the actual implementation uses following regular expression:
\\b(^['_A-Za-z0-9-]+(\\.['_A-Za-z0-9-]+)*@([A-Za-z0-9-])+(\\.[A-Za-z0-9-]+)*((\\.[A-Za-z0-9]{2,})|(\\.[A-Za-z0-9]{2,}\\.[A-Za-z0-9]{2,}))$)\\b

which is wrong, because this email address "aaa@aa.aaaaaaa" is being validated as a correct
email address (I experience this issue in client side validation).

The (more?) correct regular expression should be probably the one specified in the documentation,
but care needs to be taken of the apostrophe for the front part of the email address as well.
The resulting regular expression might be something like this:

\\b(^['_A-Za-z0-9-]+(\\.['_A-Za-z0-9-]+)*@([A-Za-z0-9-])+((\\.com)|(\\.net)|(\\.org)|(\\.info)|(\\.edu)|(\\.mil)|(\\.gov)|(\\.biz)|(\\.ws)|(\\.us)|(\\.tv)|(\\.cc)|(\\.aero)|(\\.arpa)|(\\.coop)|(\\.int)|(\\.jobs)|(\\.museum)|(\\.name)|(\\.pro)|(\\.travel)|(\\.nato)|(\\..{2,3})|(\\..{2,3}\\..{2,3}))$)\\b

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