来自html文件的Perl提取模式

use*_*810 5 perl uri html-treebuilder

我有一个充满链接的.html文件,我想提取没有http://的域名(所以只是链接的主机名部分,例如blah.com)列出它们并删除重复项.

这是我到目前为止所提出的 - 我认为问题是我试图传递$ tree数据的方式

#!/usr/local/bin/perl -w

use HTML::TreeBuilder 5 -weak; # Ensure weak references in use
use URI;
  foreach my $file_name (@ARGV) {
    my $tree = HTML::TreeBuilder->new; # empty tree
    $tree->parse_file($file_name);
    my $u1 = URI->new($tree);
    print "host: ", $u1->host, "\n";
    print "Hey, here's a dump of the parse tree of $file_name:\n";

    # Now that we're done with it, we must destroy it.
    # $tree = $tree->delete; # Not required with weak references
  }
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小智 4

就我个人而言,我会使用 Mojo::DOM 来实现此目的,并使用 URI 模块来提取域:`

  use Mojo::DOM;
  use URI;
  use List::AllUtils qw/uniq/;

  my @domains = sort +uniq
    map eval { URI->new( $_->{href} )->authority } // (),
        Mojo::DOM->new( $html_code )->find("a[href]")->each;
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(PS 处理异常->authority是因为某些 URI 会在这里发出嘎嘎声;例如 mailto:s)