查找具有命名空间的 XML 节点的 XML::LibXML 问题 [英] XML::LibXML issue finding XML nodes with a namespace

问题描述

我正在编写 XML 解析器，但处理链接的程序有问题.我正在尝试解析 XML 层次结构设置/设置，然后查找节点值".以下是 XML 的示例:

I am writing an XML parser and am having an issue with the program handling a link. I am attempting to parse an XML hierarchy Settings/Setting then findnode 'Value'. The following is an example of the XML:

<?xml version='1.0' ?>
<Settings xmlns='http://hme.com/Settings.xsd'>
  <Setting SID="0">
    <Name>Store ID</Name>
    <Value>72</Value>
  </Setting>
  <Setting SID="1">
    <Name>Deprecated</Name>
    <Value>0</Value>
  </Setting>
  <Setting SID="8">
    <Name>Open Store Hours Sunday</Name>
    <Value>25200</Value>
  </Setting>

这是我用来解析 XML 的代码

Here is the code I am using to parse the XML

my $doc = $parser->parse_file($settings_file) or die "Couldn't parse timer settings
";

#Sunday
for my $reviewer ($doc->findnodes('/Settings/Setting[@SID="8"]')) {
  my ($name) = $reviewer->findnodes('Value');
  $name->removeChildNodes();
  $name->appendText('109800');
}

当我从 XML 文件中删除 xmlns='http://hme.com/Settings.xsd' 时，替换值节点没有问题.一旦我在 XML 中输入链接，代码将停止工作并且不会更新 xml 表.有没有办法处理此链接或将其删除，以便我可以正确更新文件?

When I remove the xmlns='http://hme.com/Settings.xsd' from the XML file, there is no issue with replacing the value node. Once I enter the link back in the XML, the code stops working and will not update the xml sheet. Is there a way to handle for this link or to remove it so I can properly update the file?

推荐答案

我能够使用这段代码来完成这个工作.

I was able to get this working using this code.

my $dom = XML::LibXML->load_xml(location => $filename);

my $xpc = XML::LibXML::XPathContext->new($dom);
$xpc->registerNs('xsd',  'http://hme.com/Settings.xsd');

my($match1) = $xpc->findnodes('//xsd:Settings/xsd:Setting[@SID="8"]/xsd:Value');
$match1->removeChildNodes();
$match1->appendText('23400');

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