问题
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.
My 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>
I use:
doc.xpath("//node()[preceding-sibling::comment()[. = ' begin content ']]
[following-sibling::comment()[. = ' end content ']]")
Result:
<div>some text</div>
<div>
<p>Some more elements</p>
</div>
<!-- end content --><!-- begin content -->
<div>more text</div>
What I'm trying to get:
<div>some text</div>
<div>
<p>Some more elements</p>
</div>
回答1:
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 '])]
I.e.:
//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"
来源：https://stackoverflow.com/questions/19663736/xpath-to-select-between-two-html-comments-is-not-working