Perl XML库得到完整的xpath

Question

希望从可能抓取多个结果的一般xpath返回完整的xpath。

搜索字符串应该是这样的:/myXmlPath @myValue

包含的xml节点可能看起来像这样:

<myXmlPath someAttribute="false" myValue="">
<myXmlPath someAttribute="true" myValue="">

Perl代码如下:

use XML::LibXML;
use XML::XPath::XMLParser;
my $filepath =  "c:\temp\myfile.xml";
my $parser = XML::LibXML->new();
$parser->keep_blanks(0);
my $doc    = $parser->parse_file($filepath);
@myWarn = ('/myXmlPath/@myValue');
 foreach(@myWarn) {
   my $nodeset = $doc->findnodes($_);
        foreach my $node ($nodeset->get_nodelist) {
        my $value = $node->to_literal;
            print $_,"n";   
            print $value," - value n";     
            print $node," - node n";      
                }
   }

我希望能够评估从xml返回的完整路径值。当我用它来查找xpath中的一般内容时，这段代码工作得很好，但如果我能从节点集结果中获得其他数据，那就更理想了。

就像ikegami说的，我不确定你到底想要什么，所以我对你的问题做出了一种鸟枪式的解释。

use strict;
use warnings;
use XML::LibXML;
use v5.14;
my $doc = XML::LibXML->load_xml(IO => *DATA);
say "Get the full path to the node";
foreach my $node ($doc->findnodes('//myXmlPath/@myValue')) {
    say "t".$node->nodePath();
}
say "Get the parent node of the attribute by searching";
foreach my $node ($doc->findnodes('//myXmlPath[./@myValue="banana"]')) {
    say "t".$node->nodePath();
    my ($someAttribute, $myValue) = map { $node->findvalue("./$_") } qw (@someAttribute @myValue);
    say "ttsomeAttribute: $someAttribute";
    say "ttmyValue: $myValue";
}
say "Get the parent node programatically";
foreach my $attribute ($doc->findnodes('//myXmlPath/@myValue')) {
    my $element = $attribute->parentNode;
    say "t".$element->nodePath();
}

__DATA__
<document>
<a>
  <b>
    <myXmlPath someAttribute="false" myValue="apple" />
  </b>
  <myXmlPath someAttribute="false" myValue="banana" />
</a>
</document>

将产生:

Get the full path to the node
    /document/a/b/myXmlPath/@myValue
    /document/a/myXmlPath/@myValue
Get the parent node of the attribute by searching
    /document/a/myXmlPath
        someAttribute: false
        myValue: banana
Get the parent node programatically
    /document/a/b/myXmlPath
    /document/a/myXmlPath