在两个HTML注释之间选择的XPath不起作用? [英] XPath to select between two HTML comments is not working?
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问题描述
我正在尝试在两个HTML注释之间选择一些内容，但是在正确处理它时遇到了一些麻烦(如"
I'm trying to select some content between two HTML comments, but having some trouble getting it right (as seen in "XPath to select between two HTML comments?"). There seems to be a problem when new comments that are on the same line.
我的HTML:
<html>
........
<!-- begin content -->
<div>some text</div>
<div>
<p>Some more elements</p>
</div>
<!-- end content --><!-- begin content -->
<div>more text</div>
<!-- end content -->
.......
</html>
我使用:
doc.xpath("//node()[preceding-sibling::comment()[. = ' begin content ']]
[following-sibling::comment()[. = ' end content ']]")
结果:
<div>some text</div>
<div>
<p>Some more elements</p>
</div>
<!-- end content --><!-- begin content -->
<div>more text</div>
我想要得到的是什么
<div>some text</div>
<div>
<p>Some more elements</p>
</div>
推荐答案
如果您对第一条评论感兴趣，则可以从查找第一条评论开始:
If you are interested in the first pair of comments, you could start with looking for the first comment:
//comment()[.=' begin content ']/following::*[not(preceding::comment()[.=' end content '])]
即:
//comment()[1][.=' begin content '] <-- look for first suitable comment
/following::* <-- take all following nodes
[not(preceding::comment()[.=' end content '])] <-- satisfying condition there is no preceding "end comment"
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