用HTML :: TreeBuilder解析html

Question

我想解析html頁面。使用以下命令提取badge，description和badge類型

      <div class="row">
       <div class="span8">
         <table id="badge-list">
           <tr>
             <td style="width: 25px;"></td>
             <td style="width: 200px;" class="badge-cell">
                <a class="badge-name" href="/badge/show/3/">
                    <span class="badge-icon bronze">&#8226;</span>
                     Editor
                </a>
                <span class="multiplier">x 3892</span></td>
              <td class="earned False">&nbsp;</td>
              <td>First edit</td>
           </tr>

我的perl代碼如下，

我正在嘗試使用以下代碼提取a class="badge-name"和其他詳細信息

      my $tree = HTML::TreeBuilder->new();
      $tree->parse($content);
      my ($h1) = $tree->look_down('_tag', 'table', 'id', 'badge-list'); 
      my @tr = $h1->look_down('_tag', 'tr') ;

      foreach my  $tr (@tr) {
         my @tdList = $tr->look_down('_tag','td');

         foreach my $td ( @tdList) {
           if (my $a = $td->look_down('_tag','a')) {
               print $a->as_text , "\n";
               my $span = $a->look_down('_tag','span', 'class');
               print $span->attr('class');
           }
           else {
               my $text =  $td->as_text , "\n";    
               print "$text\n";
           }
      }

    }

該代碼Wide character in print at ..引發警告Wide character in print at ..

Answer 1

look_down需要成對的屬性/值參數。

$a->look_down('_tag','span', 'class')

應該只是

$a->look_down('_tag','span')

Answer 2

我建議添加“ use utf8;”。 在腳本的開頭添加支持非ASCII符號的打印件。 符號•表示寬。

use utf8;