如果我知道里面的标签,我怎么才能使用Perl的HTML模块找到div的内容? [英] How can I find the contents of a div using Perl's HTML modules, if I know a tag inside of it?
问题描述
我有这样的HTML:
< div id =listSubtitlesFilm>
< dt id =a1>
< a href =/ 45 / subtitles-67624.aspx>
.45(2006)
< / a>
< / dt>
< / div>
我想解析 /45/subtitles-67624.asp
,但更重要的是我想知道如何解析div的内容
我被给了这个上一个问题的例子:
while(my $ anchor = $ parser-> get_tag('a')){
if(my $ href = $ anchor-> get_attr('href')){
#http://subscene.com/english/Sit-Down-Shut-Up-First-Season/subtitles -272112.aspx
push @dnldLinks,$ 1 if $ href =〜m!/ subtitle-(\d {2,8})\.aspx !;
}
这个工作非常完美,但是当我尝试编辑它时,在``div`上使用它不起作用。这是我试过的代码:
我试过使用这段代码:
<$ c $ ($ my $ anchor = $ p-> get_tag(dt)){
if($ stuff = $ anchor-> get_attr('a1')){
print $ stuff \\\
;
}
}
地址,您的具体问题,给定的HTML:
< div id =listSubtitlesFilm>
< dt id =a1>
< a href =/ 45 / subtitles-67624.aspx>
.45(2006)
< / a>
< / dt>
< / div>
我假设您对锚文本感兴趣,即。 (2006)
,在这种情况下,但只有当锚点出现在 div
时,id listSubtitlesFilm
。
#!/ usr / bin / perl
use strict;
使用警告;
使用HTML :: TokeParser :: Simple;
my $ parser = HTML :: TokeParser :: Simple-> new(handle => \ * DATA);
my @dnldLinks;
while(my $ div = $ parser-> get_tag('div')){
my $ id = $ div-> get_attr('id');
next除非定义($ id)和$ id eq'listSubtitlesFilm';
my $ anchor = $ parser-> get_tag('a');
my $ href = $ anchor-> get_attr('href');
next除非定义($ href)
和$ href =〜m!/ subtitles-(\d {2,8})\.aspx\z !;
push @dnldLinks,[$ parser-> get_trimmed_text('/ a'),$ 1];
}
使用Data :: Dumper;
打印Dumper \ @ dnldLinks;
__DATA__
< div id =listSubtitlesFilm>
< dt id =a1>
< a href =/ 45 / subtitles-67624.aspx>
.45(2006)
< / a>
< / dt>
< / div>
输出:
$ VAR1 = [
[
'.45(2006)',
'67624'
]
];
Ever since I asked how to parse html with regex and got bashed a bit (rightfully so), I've been studying HTML::TreeBuilder, HTML::Parser, HTML::TokeParser, and HTML::Elements Perl modules.
I have HTML like this:
<div id="listSubtitlesFilm">
<dt id="a1">
<a href="/45/subtitles-67624.aspx">
.45 (2006)
</a>
</dt>
</div>
I want to parse out the /45/subtitles-67624.asp
, but more importantly I want to know how to parse out the contents of the div.
I was given this example on a previous question:
while ( my $anchor = $parser->get_tag('a') ) {
if ( my $href = $anchor->get_attr('href') ) {
#http://subscene.com/english/Sit-Down-Shut-Up-First-Season/subtitles-272112.aspx
push @dnldLinks, $1 if $href =~ m!/subtitle-(\d{2,8})\.aspx!;
}
This worked perfectly for that, but when I tried to edit it a bit and use it on a ``div` it didn't work. Here is the code I tried:
I tried using this code:
while (my $anchor = $p->get_tag("dt")) {
if($stuff = $anchor->get_attr('a1')) {
print $stuff."\n";
}
}
To address, your specific question, given the HTML:
<div id="listSubtitlesFilm">
<dt id="a1">
<a href="/45/subtitles-67624.aspx">
.45 (2006)
</a>
</dt>
</div>
I am assuming you are interested in the anchor text, i.e. ".45 (2006)"
, in this case, but only if the anchor occurs in a div
with id listSubtitlesFilm
.
#!/usr/bin/perl
use strict;
use warnings;
use HTML::TokeParser::Simple;
my $parser = HTML::TokeParser::Simple->new(handle => \*DATA);
my @dnldLinks;
while ( my $div = $parser->get_tag('div') ) {
my $id = $div->get_attr('id');
next unless defined($id) and $id eq 'listSubtitlesFilm';
my $anchor = $parser->get_tag('a');
my $href = $anchor->get_attr('href');
next unless defined($href)
and $href =~ m!/subtitles-(\d{2,8})\.aspx\z!;
push @dnldLinks, [$parser->get_trimmed_text('/a'), $1];
}
use Data::Dumper;
print Dumper \@dnldLinks;
__DATA__
<div id="listSubtitlesFilm">
<dt id="a1">
<a href="/45/subtitles-67624.aspx">
.45 (2006)
</a>
</dt>
</div>
Output:
$VAR1 = [ [ '.45 (2006)', '67624' ] ];
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