[ http://issues.apache.org/jira/browse/VALIDATOR-196?page=all ]
Henri Yandell resolved VALIDATOR-196.
-------------------------------------
Resolution: Invalid
The only Perl in there is that you do "m/...../" or the shorthand of "/...../".
I don't see any obvious reason as to why you would need to put "//" around the
regexp and not just "/". Perl5Util's javadoc seems pretty clear that it's just
the one "/".
The reporter's issue is INVALID. In regexp terms, "[a-zA-Z0-9]*" will always
match the chosen text "as*&^%dfasd1314213". Ignoring the lack of ^ and $,
having a single token followed by * will match anything, including an empty
string as the * is zero-to-many and including a string of "%%%%". Niall's
suggestion is probably what you're after, but it'll all depend on exactly what
you want to do regexp-wise.
As it's the greatest computer book of all time, I heartily recommend Jeffrey
Friedl's Mastering Regular Expressions book :)
> GenericValidator#matchRegexp
> ----------------------------
>
> Key: VALIDATOR-196
> URL: http://issues.apache.org/jira/browse/VALIDATOR-196
> Project: Commons Validator
> Issue Type: Bug
> Affects Versions: 1.3.1
> Environment: Windows 2000 ; J2SDK 1.4.2 ; Eclipse 3.1.2
> Reporter: lutianxiang
>
> GenericValidator.matchRegexp("as*&^%dfasd1314213","[a-zA-Z0-9]*");
> User this method cannot get FALSE value
> In this method Source like this...
> .........
> return matcher.match("/" + regexp + "/", value);
> should be
> ..........
> return matcher.match("//" + regexp + "//", value);
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