XML的一部分如下所示:
<ipcEntry kind="1" symbol="A01B0013080000" ipcLevel="A" entryType="K" lang="EN" nocore="yes">
<textBody>
<title>
<titlePart>
<text>for working subsoil</text>
</titlePart>
</title>
</textBody>
<ipcEntry kind="2" symbol="A01B0013100000" ipcLevel="A" entryType="K" lang="EN" nocore="yes">
<textBody>
<title>
<titlePart>
<text>Special implements for lifting subsoil layers</text>
</titlePart>
</title>
</textBody>
<ipcEntry kind="3" symbol="A01B0013120000" ipcLevel="A" entryType="K" lang="EN" nocore="yes">
<textBody>
<title>
<titlePart>
<text>Means for distributing the layers on the surface</text>
</titlePart>
</title>
</textBody>
</ipcEntry>
</ipcEntry>
</ipcEntry>
我的代码是:
#!/usr/bin/perl
use strict;
use warnings;
use XML::Twig;
use Data::Dumper;
my $twig_handlers = { 'ipcEntry' => \&ipcEntrySub };
my $file = 'A01B.xml';
my $twig= new XML::Twig( twig_handlers => $twig_handlers );
$twig->parsefile($file);
#$twig->print;
sub ipcEntrySub {
my ($twig_obj, $element) = @_;
print $element->{'att'}->{'symbol'} . "\n";
print "Kind: $element->{'att'}->{'kind'}\n";
print $element->text . "\n";
print "###########################################\n";
$twig_obj->purge;
}
似乎我无法得到文字:<text>Special implements for lifting subsoil layers</text>
我猜它是因为<ipcEntry kind="2" symbol="A01B0013100000" ipcLevel="A" entryType="K" lang="EN" nocore="yes">
有另一个sub ipcEntry。
我可以<text>Means for distributing the layers on the surface</text>
。
我在这里做错了什么?
谢谢,
答案 0 :(得分:6)
来自XML :: Twig文档:
flush不应使用此方法, 总是冲洗树枝,而不是元素。
purge与“flush”相同 除了它不打印树枝。它 只删除所有的元素 到目前为止已被完全解析。
使用delete函数替换清除函数以相反的顺序打印所有ipcEntry元素的文本,即。从最里面的ipcEntry元素开始。
sub ipcEntrySub {
my ($twig_obj, $element) = @_;
print $element->{'att'}->{'symbol'} . "\n";
print "Kind: $element->{'att'}->{'kind'}\n";
print $element->text . "\n";
$element->delete;
}