Introduction to perl's xml Processing Module

1. Search for existing modules
Http://search.cpan.org/

2. Input an XML query and select a module that has a high rating and can meet your needs:
XML: Simple
Use warnings;
Use XML: Simple;
Use Data: Dumper;

# Converting XML files into Hash results

Copy codeThe Code is as follows: my $ xml = XMLin ('abstract _ sample. xml ');
Open (HASH, '> XML_hash') | die "can not open the file: $! ";
Print HASH Dumper ($ xml );

# Obtain the value of a node in XML according to the path defined in XML.

Copy codeThe Code is as follows: print $ xml-> {PubmedArticle}-> {MedlineCitation}-> {PMID };

# You can re-convert XML into a Hash structure to XML output, but note that the converted XML may be different from the external structure of the original XML file.

Copy codeThe Code is as follows: $ MeSH_XML = XMLout ($ xml-> {PubmedArticle}-> {MedlineCitation}-> {MeshHeadingList });
Print $ MeSH_XML;

For more information, see:
Http://search.cpan.org /~ Grantm/XML-Simple-2.18/lib/XML/Simple. pm

XML: Smart

My $ xml = XML: Smart-> new ('abstract _ sample. xml ');

For more information, see:
Http://search.cpan.org /~ Gmpassos/XML-Smart-1.6.9/lib/XML/Smart. pm