I haven't worked with XML::DOM before (I usually use XML::Smart), but here's a working example that extracts the zipcode field from the example data you provided:
use strict;
use warnings;
use XML::DOM;
my $xml = '';
$xml .= $_ for <DATA>;
my $parser = XML::DOM::Parser->new;
my $doc = $parser->parse($xml);
my $result_list = $doc->getElementsByTagName('Result');
my $result_count = $result_list->getLength;
for my $result_n (0..($result_count - 1)) {
my $result = $result_list->item($result_n);
my $zip_nodes = $doc->getElementsByTagName('Zip');
my $zip = $zip_nodes->item(0)->getChildNodes->item(0)->getData;
print "zipcode: $zip\n";
}
__DATA__
<?xml version="1.0" encoding="UTF-8"?>
<ResultSet>
<Result precision="address">
<Latitude>37.416384</Latitude>
<Longitude>-122.024853</Longitude>
<Address>701 FIRST AVE</Address>
<City>SUNNYVALE</City>
<State>CA</State>
<Zip>94089-1019</Zip>
<Country>US</Country>
</Result>
</ResultSet>
It should have some additional error handling for malformed documents, but that's easy enough to add.
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