I'm trying to add a new <student> node with attibute id="1003" after the <student> element with id='1001'. Here is the xml structure:
<?xml version="1.0" encoding="utf-8" ?>
<University>
<students>
<student id="1000"/>
<student id="1001"/>
<student id="1002"/>
</students>
</University>
I'm using XML::LibXML module and wrote the following snippet:
#!/usr/bin/perl
use XML::LibXML;
$parser = XML::LibXML->new();
$doc = $parser->parse_file('student.xml');
$query = '//student';
for my $ele ($doc->findnodes($query)){
my $attr_text=$ele->getAttribute('id');
if($attr_text eq '1001'){
$new_ele=$doc->createElement('student');
$new_ele->setAttribute('id','1003');
$doc->insertAfter($new_ele,$ele);
last;
}
}
open(TESTFILE,">result.xml");
print TESTFILE $doc->toString;
close(TESTFILE);
But I'm getting the following run-time error:
NOT_FOUND_ERR
I'm still a novice in perl.Can you please explain the error message and tell me how to resolve it?
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