在perl中向xml文件添加和元素 [英] add and element to xml file in perl

问题描述

我有一个xml文件，如下图:

I have an xml file as shown below:

<root>
 <element1>abc</element1>
 <element2>123</element2>
 <element3>456</element3>
</root>

我正在尝试使用 xml:dom 在 perl 中添加和 element4

I am trying to add and element4 in perl using xml:dom

use XML::DOM;

#parse the file
my $parser = new XML::DOM::Parser;
my $doc = $parser->parsefile ("mytest.xml");
my $root = $doc->getDocumentElement();

my $new_element= $doc->createElement("element4");
my $new_element_text= $doc->createTextNode('testing');
$new_element->appendChild($new_element_text);

$root->appendChild($new_element);

我收到错误:"未定义的子程序 &XML::LibXML::Element::getNodeType"

I am getting the error: "Undefined subroutine &XML::LibXML::Element::getNodeType "

我尝试了 insetBefore 方法，通过查找元素并尝试在此之前插入它.

i tried insetBefore method to, by finding elements and tried to insert it before that.

任何指针，我做错了什么?

Any pointers, what am i doing wrong?

推荐答案

XML::DOM 似乎最后一次更新是在 2000 年，这意味着它不是很受支持的模块.看起来 XML::LibXML 提供了非常相似的接口，请参见下面的工作示例:

XML::DOM seems to be last updated in 2000, which means it is not very much supported module. It looks like XML::LibXML provides very similar interface, see below working example:

use XML::LibXML;

my $parser = XML::LibXML->new;
my $doc = $parser->parse_file("mytest.xml");
my $root = $doc->getDocumentElement();

my $new_element= $doc->createElement("element4");
$new_element->appendText('testing');

$root->appendChild($new_element);

print $root->toString(1);

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