我想从HTML <table>中包含的网页中提取一些信息.如何将所有表信息提取到一个好的| 分开的文件？
Author|Book|Year|Comments Bill Bryson|Short History of Nearly Everything|2004 Stephen Hawking|A Brief History of Time|1998|Still haven't read.
理想情况下,我想要一个将URL和输出文件作为参数然后给出上述输出的函数.
(defun extract-table (url filename)
(extract-from-html-table (fetch-web-page url)))
(extract-table "http://www.mypage.com" "output.txt")
上述输出的示例HTML输入:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>Lisp</title>
</head>
<body>
<h1>Welcome to Lisp</h1>
<table class="any" style="font-size: 14px;">
<TR class="header">
<td>Author</td>
<TD>Book</TD>
<td>Year</td>
<td>Comments</td>
</TR>
<tr class="odd">
<td>Bill Bryson</td>
<td>Short History of Nearly Everything</td>
<td>2004</td>
</tr>
<tr>
<td>Stephen Hawking</td>
<td>A Brief History of Time</td>
<td>1998</td>
<td>Still haven't read.</td>
</tr>
</table>
</body>
</html>
从Drakma开始获取数据.要解析这个问题,你可能会发现cxml很有帮助.或者更好的是:你可以使用closure-html,它应解析任意HTML 4. closure-html包的Common-Lisp.net页面有一个屏幕抓取示例.