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解析Java脚本中HTML标记的最佳方法

html-parsing html javascript php

Prabhu Murthi · 技术社区 · 14 年前

是否有任何人可以帮助/建议来解析HTML标记出现在 <body>...</body> 标签

3 回复 | 直到 14 年前

John 14 年前

我想您应该想使用PHP解析一个HTML文档。我建议您阅读关于 http://www.php.net/manual/en/book.dom.php

以下是 php-pro提供的示例

<?PHP

$HTML=
&!doctype html public“-//w3c//dtd xhtml 1.0严格//en”
“http://www.w3.org/tr/xhtml1/dtd/xhtml1 strict.dtd”>
<html xmlns=“http://www.w3.org/1999/xhtml”xml:lang=“en-us”dir=“ltr”>
&头;
<title>phpro.org</title>
和/头& GT;
和身体;
<h2>周六预测</h2>
&!--2008年5月23日星期五8时28分发布-->
<table border=“0”summary=“Capital Cities Precis预测”>
TSBOR>
T>
<td><a href=“/products/idn10064.shtml”title=“链接到悉尼预测”>悉尼</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>19&deg;</td>
<td>好。多半阳光明媚。</td>
& LT/TR & GT;

T>
<td><a href=“/products/idv10450.shtml”title=“链接到墨尔本预测”>墨尔本</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>16&deg;</td>
<td>雾然后很好。</td>
& LT/TR & GT;

T>
<td><a href=“/products/idq10095.shtml”title=“链接到布里斯班预测”>布里斯班</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>24&deg;</td>
<td>大部分都很好</td>
& LT/TR & GT;

T>
<td><a href=“/products/idw12300.shtml”title=“链接到珀斯预测”>珀斯</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>21&deg;</td>
<td>淋浴次数少,稍后增加。</td>
& LT/TR & GT;

T>
<td><a href=“/products/ids10034.shtml”title=“链接到阿德莱德预测”>阿德莱德</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>20&deg;</td>
<td>好。多半阳光明媚。</td>
& LT/TR & GT;

T>
<td><a href=“/products/idt65061.shtml”title=“链接到霍巴特预测”>霍巴特</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>13&deg;</td>
<td>主要是好的。</td>
& LT/TR & GT;

T>
<td><a href=“/products/idn10035.shtml”title=“链接到堪培拉预测”>堪培拉</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>15&deg;</td>
<td>很好,大部分是晴天。</td>
& LT/TR & GT;

T>
<td><a href=“/products/idd10150.shtml”title=“链接到达尔文预测”>达尔文</a></td>
<td title=“最高温度(摄氏度)”class=“Max AlignRight”>32&deg;</td>
<td>阳光明媚。</td>
& LT/TR & GT;

&T/BOT>
&表;

和/身体;
& lt//html & gt;
;

/***新的DOM对象***/
$dom=新建domdocument;

/***将HTML加载到对象中***/
$dom->加载HTML($html);

/***放弃空白***/
$dom->preserveWhitespace=false;

/***表的标签名***/
$tables=$dom->getElementsByTagname('table');

/***从表中获取所有行***/
$rows=$tables->项(0)->getElementsByTagname('tr');

/***循环表行***/
foreach($rows作为$row)
{
/***按标记名获取每列***/
$cols=$row->getElementsByTagname(“td”);
/***返回值***/
echo$cols->项(0)->节点值。'<br/>';
echo$cols->项(1)->节点值。'<br/>';
echo$cols->项(2)->节点值;
echo'<hr/>';
}
?gt;
< /代码> 
出http://www.php.net/manual/en/book.dom.php

以下是由提供的示例PHP Pro

<?php

$html = '
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" dir="ltr">
<head>
<title>PHPRO.ORG</title>
</head>
<body>
<h2>Forecast for Saturday</h2>
<!-- Issued at 0828 UTC Friday 23 May 2008 -->
<table border="0" summary="Capital Cities Precis Forecast">
   <tbody>
      <tr>
         <td><a href="/products/IDN10064.shtml" title="Link to Sydney forecast">Sydney</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">19&deg;</td>
         <td>Fine. Mostly sunny.</td>
      </tr>

      <tr>
         <td><a href="/products/IDV10450.shtml" title="Link to Melbourne forecast">Melbourne</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">16&deg;</td>
         <td>Fog then fine.</td>
      </tr>

      <tr>
         <td><a href="/products/IDQ10095.shtml" title="Link to Brisbane forecast">Brisbane</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">24&deg;</td>
         <td>Mostly fine</td>
      </tr>

      <tr>
         <td><a href="/products/IDW12300.shtml" title="Link to Perth forecast">Perth</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">21&deg;</td>
         <td>Few showers, increasing later.</td>
      </tr>

      <tr>
         <td><a href="/products/IDS10034.shtml" title="Link to Adelaide forecast">Adelaide</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">20&deg;</td>
         <td>Fine. Mostly sunny.</td>
      </tr>

      <tr>
         <td><a href="/products/IDT65061.shtml" title="Link to Hobart forecast">Hobart</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">13&deg;</td>
         <td>Mainly fine.</td>
      </tr>

      <tr>
         <td><a href="/products/IDN10035.shtml" title="Link to Canberra forecast">Canberra</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">15&deg;</td>
         <td>Fine, mostly sunny.</td>
      </tr>

      <tr>
         <td><a href="/products/IDD10150.shtml" title="Link to Darwin forecast">Darwin</a></td>
         <td title="Maximum temperature in degrees Celsius" class="max alignright">32&deg;</td>
         <td>Fine and sunny.</td>
      </tr>

   </tbody>
</table>

</body>
</html>
';

    /*** a new dom object ***/
    $dom = new domDocument;

    /*** load the html into the object ***/
    $dom->loadHTML($html);

    /*** discard white space ***/
    $dom->preserveWhiteSpace = false;

    /*** the table by its tag name ***/
    $tables = $dom->getElementsByTagName('table');

    /*** get all rows from the table ***/
    $rows = $tables->item(0)->getElementsByTagName('tr');

    /*** loop over the table rows ***/
    foreach ($rows as $row)
    {
        /*** get each column by tag name ***/
        $cols = $row->getElementsByTagName('td');
        /*** echo the values ***/
        echo $cols->item(0)->nodeValue.'<br />';
        echo $cols->item(1)->nodeValue.'<br />';
        echo $cols->item(2)->nodeValue;
        echo '<hr />';
    }
?>

vsync Qantas 94 Heavy 14 年前

你的意思是像 John Resig's html parser ?

James Westgate 14 年前

您可以通过Ajax从另一个页面加载整个HTML文档,并使用jquery选择器(如果它是XHTML)对其进行分析。不确定这是否会起作用。