使用C＃解析HTML页面有问题
我一直在尝试使用HtmlAgilityPack，Fizzler和Regular Expressions来完成某些事情，但没有运气。
我试图抓取并解析元素的页面就在这里 http://www.sczg.unizg.hr/student-servis/vijest/2015-04-14-poslovi-u-administraciji/
Example of an item in item list:
<p>
<b>1628/ SomeBoldedTitle
</b>
Some Description.
Some price 20,00kuna.
<strong>Contact somenumber
098/1234-567 some mail
</strong>
</p>
我想解析这个项目：
- 4/5位ID＆gt; 1628 /在b元素 中
- 标题＆gt; b> gt元素中的SomeBoldedTitle
- 描述＆gt;在/ b 之后
- 联系电话和链接＆gt;有时在b 中有时使用强＆gt;元素
以下是我尝试获得至少一些输出的一些代码，我期望所有p元素都带有b，但没有任何结果出来。
using System;
using HtmlAgilityPack;
using Fizzler.Systems.HtmlAgilityPack;
namespace Sample
{
class Program
{
static void Main(string[] args)
{
var web = new HtmlWeb();
var document = web.Load("http://www.sczg.unizg.hr/student-servis/vijest/2015-04-14-poslovi-u-administraciji/");
var page = document.DocumentNode;
foreach (var item in page.QuerySelectorAll("p.item"))
{
Console.WriteLine(item.QuerySelector("p:has(b)").InnerHtml);
}
}
}
}
这是我用来获取此代码的fizzler“文档”的链接 https://fizzlerex.codeplex.com/
1 个答案:
答案 0 :(得分：1)
转发
我建议使用HTML解析模块，因为HTML会导致一些疯狂的边缘情况，这些情况会真正扭曲您的数据。但是，如果您控制源文本仍然需要/需要使用正则表达式，我会提供这种可能的解决方案。
描述
给出以下文字
Example of an item in item list:
<p>
<b>1628/ SomeBoldedTitle
</b>
Some Description.
Some price 20,00kuna.
<strong>Contact somenumber
098/1234-567 some mail
</strong>
</p>
这个正则表达式
<p>(?:(?!<p>).)*<b>([0-9]+)/\s*((?:(?!</b>).)*?)\s*</b>\s*((?:(?!<strong>|<b>).)*?)\s*<(?:strong|b)>\s*((?:(?!</).)*?)\s*</
将您的文本解析为以下捕获组：
- 组0将是大部分字符串
- 第1组将是多位数代码
- 第2组将是标题
- 第3组将是描述
- 第4组将是电话号码
捕获论坛
[0][0] = <p>
<b>1628/ SomeBoldedTitle
</b>
Some Description.
Some price 20,00kuna.
<strong>Contact somenumber
098/1234-567 some mail
</
[0][1] = 1628
[0][2] = SomeBoldedTitle
[0][3] = Some Description.
Some price 20,00kuna.
[0][4] = Contact somenumber
098/1234-567 some mail
解释
注意：右键单击图像并在新窗口中选择视图。
NODE EXPLANATION
----------------------------------------------------------------------
<p> '<p>'
----------------------------------------------------------------------
(?: group, but do not capture (0 or more times
(matching the most amount possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
<p> '<p>'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character
----------------------------------------------------------------------
)* end of grouping
----------------------------------------------------------------------
<b> '<b>'
----------------------------------------------------------------------
( group and capture to \1:
----------------------------------------------------------------------
[0-9]+ any character of: '0' to '9' (1 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
) end of \1
----------------------------------------------------------------------
/ '/'
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
( group and capture to \2:
----------------------------------------------------------------------
(?: group, but do not capture (0 or more
times (matching the least amount
possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
</b> '</b>'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character
----------------------------------------------------------------------
)*? end of grouping
----------------------------------------------------------------------
) end of \2
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
</b> '</b>'
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
( group and capture to \3:
----------------------------------------------------------------------
(?: group, but do not capture (0 or more
times (matching the least amount
possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
<strong> '<strong>'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
<b> '<b>'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character
----------------------------------------------------------------------
)*? end of grouping
----------------------------------------------------------------------
) end of \3
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
< '<'
----------------------------------------------------------------------
(?: group, but do not capture:
----------------------------------------------------------------------
strong 'strong'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
b 'b'
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
> '>'
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
( group and capture to \4:
----------------------------------------------------------------------
(?: group, but do not capture (0 or more
times (matching the least amount
possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
</ '</'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character
----------------------------------------------------------------------
)*? end of grouping
----------------------------------------------------------------------
) end of \4
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
</ '</'
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