解析没有HTML标签的数据

问题描述：

我需要从下面列出的html中提取实际的电话号码，但我不确定如何使用Nokogiri CSS来做到这一点，因为周围没有任何html标签。当一个at_css（.phonetitle）它只解析电话而不是数字。解析没有HTML标签的数据

<div class="detail"> 
    <span class="address">Corner of Toorak Road and Chapel Street, South Yarra</span><br> 
    <span class="phonetitle">Phone</span> 95435 34341 
    <br><br> 
</div>

答

没有一点点的XPath不能处理：

#!/usr/bin/env ruby 
require 'nokogiri' 

doc = Nokogiri::HTML(<<-HERE) 
    <div class="detail"> 
    <span class="address"> 
     Corner of Toorak Road and Chapel Street, South Yarra 
    </span><br> 
    <span class="phonetitle">Phone</span> 95435 34341 
    <br><br> 
    </div> 
HERE 

puts doc.search('*[@class="detail"]/text()').text.strip 
# => 95435 34341

答

这很容易解析，因为电话号码本身没有明确的包装。这不是它自己的或者。

如果你把整个东西都变成了javascript，我想你可以通过使用split（）方法来分解它。

var string = '<div class="detail"> 
    <span class="address">Corner of Toorak Road and Chapel Street, South Yarra</span><br> 
    <span class="phonetitle">Phone</span> 95435 34341 
    <br><br> 
</div>'; 

var a = string.split('Phone</span>'); 
var b = string.split('<br>',a[1]); 
return b[0];

答

试试这个：

public static final int MAX_HTML_TAG_LENGTH = 10; 
public static final String[] REGEX_HTTP_TAG_FILTER = new String[] { 
      "[\\t\\n\\r\\f]+", 
      "<(s|S)(c|C)(r|R)(i|I)(p|P)(t|T)[^>]*>.+?</(s|S)(c|C)(r|R)(i|I)(p|P)(t|T)>", 
      "<(s|S)(t|T)(y|Y)(l|L)(e|E)[^>]*>.+?</(s|S)(t|T)(y|Y)(l|L)(e|E)>", 
      "<[a-zA-Z]{1," + MAX_HTML_TAG_LENGTH + "}\\s*[^>]*>", 
      "</[a-zA-Z]{1," + MAX_HTML_TAG_LENGTH + "}>", "<!--.+?-->", 
      "&nbsp;", 
      "[ ]{2,}+" 
}; 

for (int i = 0; i < REGEX_HTTP_TAG_FILTER.length; i++) { 
      result = result.replaceAll(REGEX_HTTP_TAG_FILTER[i], " "); 
}

答

这里的XPath表达式查找电话号码：

*[@class='phonetitle']/following-sibling::text()

例在Python中（你可以将它移植到Ruby和nokogiri使用@Jörg W Mittag's answer）：

#!/usr/bin/env python 
from lxml import html 

doc = html.fromstring(""" 
    <div class="detail"> 
    <span class="address"> 
     Corner of Toorak Road and Chapel Street, South Yarra 
    </span><br> 
    <span class="phonetitle">Phone</span> 95435 34341 
    <br><br> 
    </div> 
""") 

pn, = doc.xpath("*[@class='phonetitle']/following-sibling::text()") 
print pn.strip() 
# -> 95435 34341

解析没有HTML标签的数据

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