我有一个
XML文件
<PARENT > <TAG string1="asdf" string2="asdf" > </TAG > </PARENT>
我想在这里提取string2值..而且我想将它设置为一个新值..
怎么做？
解决方法
使用XPath表达式
use strict;
use warnings;
use XML::LibXML;
use Data::Dumper;
my $doc = XML::LibXML->new->parse_string(q{
<PARENT>
<TAG string1="asdf" string2="asdfd">
</TAG>
</PARENT>
});
my $xpath = '/PARENT/TAG/@string2';
# getting value of attribute:
print Dumper $doc->findvalue($xpath);
my ($attr) = $doc->findnodes($xpath);
# setting new value:
$attr->setValue('dfdsa');
print Dumper $doc->findvalue($xpath);
# do following if you need to get string representation of your XML structure
print Dumper $doc->toString(1);
并阅读文档,当然:)