[ http://issues.apache.org/jira/browse/NUTCH-255?page=all ]
Dennis Kubes updated NUTCH-255:
-------------------------------
Attachment: urlnormalize_jessionid.patch
Patch file that adds regular expression to remove jsessionid strings from urls
to the regex-normalize.xml.template file.
> Regular Expression for RegexUrlNormalizer to remove jsessionid
> --------------------------------------------------------------
>
> Key: NUTCH-255
> URL: http://issues.apache.org/jira/browse/NUTCH-255
> Project: Nutch
> Type: Improvement
> Components: fetcher
> Versions: 0.8-dev
> Environment: Windows XP Media Center 2005, 2 Gigs RAM, 3.0 Ghz Pentium 4
> Hyperthreaded, Eclipse 3.2.0
> Reporter: Dennis Kubes
> Priority: Trivial
> Attachments: urlnormalize_jessionid.patch
>
> Some URLs are filtered out by the crawl url filter for special characters (by
> default). One of these is the jsessionid urls such as:
> http://www.somesite.com;jsessionid=A8D7D812B5EFD3099F099A760F779E3B?query=string
> We want to get rid of the jessionid and keep everything else so that it looks
> like this:
> http://www.somesite.com?query=string
> Below is a regular expression for the regex-normalize.xml file used by the
> RegexUrlNormalizer that sucessfully removes jsessionid strings while leaving
> the hostname and querystring. I have also attached a patch for the
> regex-normalize.xml.template file that adds the following expression.
> <regex>
> <pattern>(.*)(;jsessionid=[a-zA-Z0-9]{32})(.*)</pattern>
> <substitution>$1$3</substitution>
> </regex>
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