Javier P. L. wrote: > Hi, > > I am using Nutch for news sites crawling, I have a problem with one of > them that publishes the urls with & instead of &. I discovered the > use of the url normalizer and the regex-normalize.xml configuration > file. Unfortunately I did not find too much examples about how to use > the regular expressions and substitutions, so I was trying different > combinations to make the transformation but it did work. > > Basically what I want is to convert > > noticia.jsp?CAT=126&TEXTO=100000109668 > > in > > noticia.jsp?CAT=126&TEXTO=100000109668 > > because otherwise Nutch is not capable to crawl those pages. > > I am using Nutch 0.8.1 and I tried several different substitution > expressions, but finally I chose the next entry in regex-normalize.xml > but it did not work, so I assume that something is wrong > > > <regex> > <pattern>(.*)\&amp;TEXTO(.*)</pattern> >
The backslash seems wrong - you should never put a literal ampersand in an XML file, and backslash is no escape in XML, only named entities or Unicode entities are. What you want here is this: <pattern>(.*?)&amp;TEXTO(.*)</pattern> Additional question mark makes the first pattern "reluctant", otherwise it would match the whole string. > <substitution>$1&TEXTO$2</substitution> > Looks good to me. -- Best regards, Andrzej Bialecki <>< ___. ___ ___ ___ _ _ __________________________________ [__ || __|__/|__||\/| Information Retrieval, Semantic Web ___|||__|| \| || | Embedded Unix, System Integration http://www.sigram.com Contact: info at sigram dot com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Nutch-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nutch-general
