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**Category:** Ruby\
**Created:** [January 24, 2006, 4:42pm UTC](https://www.ruby-forum.com/t/screenscraping-using-htmltools-and-rexml/53065 "2006-01-24T16:42:30Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@bodikp](https://www.ruby-forum.com/u/bodikp)\
**Post date:** [January 24, 2006, 4:42pm UTC](https://www.ruby-forum.com/t/screenscraping-using-htmltools-and-rexml/53065/1 "2006-01-24T16:42:30Z")
Hi,
I need to do some screen scraping and I’ve spent a couple hour getting
htmltools and rexml do the right thing. Here’s the code:
parser = HTMLTree::Parser.new(false, false)
parser.feed(res.body)
tree = parser.tree.html\_node.as\_rexml\_document
I works for one page, but for another I get “undefined method `add’ for
#HTMLTree::Element:0x37f9cc8” in as\_rexml\_document
It seems like a library mismatch, but I just downloaded ruby and all
the libraries in the past couple days. Does anybody know what versions
I need to make this work?
Thanks a lot!
Peter
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**Author:**  [@bodikp](https://www.ruby-forum.com/u/bodikp)\
**Post date:** [January 24, 2006, 4:45pm UTC](https://www.ruby-forum.com/t/screenscraping-using-htmltools-and-rexml/53065/2 "2006-01-24T16:45:32Z")
Btw, the versions I have now are:
htmltools 1.09
rexml 3.1.2.1
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**Author:**  [@bodikp](https://www.ruby-forum.com/u/bodikp)\
**Post date:** [January 24, 2006, 4:45pm UTC](https://www.ruby-forum.com/t/screenscraping-using-htmltools-and-rexml/53065/3 "2006-01-24T16:45:32Z")
I have just tried rexml 3.1.3 and the “stable” version of rexml 2.4.8,
but none of them work.