in reply to XML::LibXML findnodes fails when using namespaces

You need to register the namespace, this is made easy with XML::LibXML::XPathContext:

use XML::LibXML; use XML::LibXML::XPathContext; + my $xml = q{<?xml version="1.0" encoding="iso-8859-1"?> <Tag1 xmlns="urn:wow"> <Foo>content</Foo> </Tag1> }; + + + my $doc = XML::LibXML->new->parse_string($xml); my $xc = XML::LibXML::XPathContext->new($doc); $xc->registerNs('foo', 'urn:wow'); + my ($foo) = $xc->findnodes('//foo:Tag1/foo:Foo'); + print "Foo in xml: ".$foo->textContent()."\n";
You can register any arbitrary prefix to your namespace URI to use in your XPath expression but note I have changed your namespace to an absolute URI as you get an error from XML::LibXML otherwise.