HTML标签中的匹配模式和替换答案

【问题标题】：Match Pattern and Replace in HTML tagsHTML标签中的匹配模式和替换
【发布时间】：2023-04-11 04:21:01
【问题描述】：

    </tr>
<tr class='htmllist_tr' style="background-color:yellow" ><td class='htmllist_td' >INDX01</td>
<td class='htmllist_td_nbr' >964.87</td>
<td class='htmllist_td_nbr' >95.13</td>
<td class='htmllist_td' >NehaA9.86</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >UNDOTBS1</td>
<td class='htmllist_td_nbr' >156.25</td>
<td class='htmllist_td_nbr' >8</td>
<td class='htmllist_td' >NehaA5.12</td>
</tr>

想在<tr>和</tr>标签之间找到NehaA然后改变

`<tr class='htmllist_tr'>`

或

<tr class='htmllist_tr' style="background-color:yellow">

到

`<tr class='htmllist_tr' style="background-color:red">` *

试过了

sed -e "/NehaA/ s/\'<tr class='htmllist_tr'>\'/\'<tr class='htmllist_tr' style="background-color:red">\'/ ;" 2932_TABLE2.txt

没有用，请帮忙

【问题讨论】：

在 awk/sed 中做这件事不是最好的主意。为什么不使用 Python+Beautiful Soup？在 perl 中你可以使用（我想，我以前没用过）HTML::Parser.
HTML 和 XML 一样，是结构化数据。你不能把它当作一个普通的文本文件。 many modules available 会解析你的 HTML 并允许你修改它。

标签： linux perl awk sed

【解决方案2】：

这是我使用HTML::TreeBuilder 的方式。代码本身是不言自明的。我建议您阅读文档，因为不建议解析 HTML using regex。

#!/usr/bin/perl
use strict;
use warnings;
use HTML::TreeBuilder;

my $str = <<'HTML'
<html>
<head>
</head>
<body>
<table>
<tr class='htmllist_tr' style="background-color:yellow" >
<td class='htmllist_td' >INDX01</td>
<td class='htmllist_td_nbr' >964.87</td>
<td class='htmllist_td_nbr' >95.13</td>
<td class='htmllist_td' >NehaA9.86</td>
</tr>
<tr class='htmllist_tr' >
<td class='htmllist_td' >UNDOTBS1</td>
<td class='htmllist_td_nbr' >156.25</td>
<td class='htmllist_td_nbr' >8</td>
<td class='htmllist_td' >NehaA5.12</td>
</tr>
</table>
</body>
</html>
HTML
;


my $root = HTML::TreeBuilder->new_from_content($str);

my @tr = $root -> find_by_tag_name('tr');

foreach (@tr) {
    if ($_ -> find_by_attribute("class","htmllist_tr")) {
       my @tds = $_ -> look_down(_tag => 'td', class => 'htmllist_td');
       my @children = map {$_ -> content_list} @tds;
       if(grep(/NehaA/, @children)) {
           $_ -> attr('style', 'background-color:red');
       }
    }
}

print $root -> as_HTML(undef, "  ");

【讨论】：

谢谢 Arunesh。我从来没有用过 HTML::TreeBuilder 会试试这个

【解决方案3】：

@ED ..抱歉混淆了 ..这是原始文件

<table  class='htmllist'>
<tr class='htmllist_tr' ><th class='htmllist_th' >TABLESPACE<br>NAME</th>
<th class='htmllist_th' >ALLOCATED<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>PCT</th>
<tr class='htmllist_tr' style="background-color:yellow" ><td class='htmllist_td' >INDX01</td>
<td class='htmllist_td_nbr' >964.87</td>
<td class='htmllist_td_nbr' >95.78</td>
<td class='htmllist_td' >NehaA9.93</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >TEMP</td>
<td class='htmllist_td_nbr' >125</td>
<td class='htmllist_td_nbr' >124.63</td>
<td class='htmllist_td_nbr' >99.7</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >TEMP_EDDDATA</td>
<td class='htmllist_td_nbr' >205.99</td>
<td class='htmllist_td_nbr' >198.52</td>
<td class='htmllist_td_nbr' >96.37</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >UNDOTBS1</td>
<td class='htmllist_td_nbr' >156.25</td>
<td class='htmllist_td_nbr' >22.85</td>
<td class='htmllist_td' >NehaA14.62</td>
</tr>
</table>

我想要这样的输出

<table  class='htmllist'>
<tr class='htmllist_tr' ><th class='htmllist_th' >TABLESPACE<br>NAME</th>
<th class='htmllist_th' >ALLOCATED<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>PCT</th>
<tr class='htmllist_tr' style="background-color:red" ><td class='htmllist_td' >INDX01</td>
<td class='htmllist_td_nbr' >964.87</td>
<td class='htmllist_td_nbr' >95.78</td>
<td class='htmllist_td' >NehaA9.93</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >TEMP</td>
<td class='htmllist_td_nbr' >125</td>
<td class='htmllist_td_nbr' >124.63</td>
<td class='htmllist_td_nbr' >99.7</td>
</tr>
<tr class='htmllist_tr' ><td class='htmllist_td' >TEMP_EDDDATA</td>
<td class='htmllist_td_nbr' >205.99</td>
<td class='htmllist_td_nbr' >198.52</td>
<td class='htmllist_td_nbr' >96.37</td>
</tr>
<tr class='htmllist_tr' style="background-color:red"><td class='htmllist_td' >UNDOTBS1</td>
<td class='htmllist_td_nbr' >156.25</td>
<td class='htmllist_td_nbr' >22.85</td>
<td class='htmllist_td' >NehaA14.62</td>
</tr>
</table>

但是当我使用这个时

awk -v RS='</tr>\\s*' '/Neha/{ORS=RT; sub(/<tr[^>]+>/,""); print "<tr class=\047htmllist_tr\047 style=\"background-color:red\">" $0}' text.txt

这给了我这样的输出

<tr class='htmllist_tr' style="background-color:red"><table  class='htmllist'>
<th class='htmllist_th' >TABLESPACE<br>NAME</th>
<th class='htmllist_th' >ALLOCATED<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>GB</th>
<th class='htmllist_th' >CURRENT<br>FREE<br>SPACE<br>PCT</th>
<tr class='htmllist_tr' style="background-color:yellow" ><td class='htmllist_td' >INDX01</td>
<td class='htmllist_td_nbr' >964.87</td>
<td class='htmllist_td_nbr' >95.78</td>
<td class='htmllist_td' >NehaA9.93</td>
</tr><tr class='htmllist_tr' style="background-color:red">
<td class='htmllist_td' >UNDOTBS1</td>
<td class='htmllist_td_nbr' >156.25</td>
<td class='htmllist_td_nbr' >22.85</td>
<td class='htmllist_td' >NehaA14.62</td>
</tr>

让我知道这是否有意义

【讨论】：

请将这些详细信息添加到您的问题而不是答案中。其次，你可以试试HTML::TreeBuilder。它会给你预期的输出。用regex解析html不是一个好习惯；它会在某个地方断裂。如果您有任何疑问，请告诉我。