Re: [nekohtml-user] Getting html back out of the DOM after manipulation

[Jenny B. <sk...@gm...>]

On Wed, Apr 9, 2008 at 1:02 AM, Jacob Kjome <ho...@vi...> wrote:
> You should avoid the direct use of implementation classes.  Go through standard
>  API's.  And if you put xalan-2.7.1.jar and serializer.jar (and, I suggest,
>  xercesImpl-2.9.1.jar) in the classpath, you will end up using the very latest
>  implementations (better than the buggy versions that ship with the JVM).
>
>  //Using String writer for output for convenience.
>  //Usually better to use an OutputStream.
>  StringWriter sw = new StringWriter();
>
>
>  //JAXP Transformer API
>  Transformer t = TransformerFactory.newInstance().newTransformer();
>
>  //for HTML output
>  t.setOutputProperty(OutputKeys.METHOD, "html");
>  t.setOutputProperty(OutputKeys.MEDIA_TYPE, "text/html");
>  t.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");



Thanks for the tip there.  That approach is working for me now.  I'm
running into a quirk of how it's output some things though, that I'm
not sure how to interpret.  (Background: I've got a lot of Java
servlet and web programming experience, but less with xml and the
various versions of xhtml and related specifications.  So I'm a bit
lost on what to expect of the browser from this.)

I have a dom document.  I've passed it through JTidy and NekoHTML for
cleanup, and the result is pretty nice.  However, in the original html
I was parsing, there were some situations like this:

<P>Some text goes <strong></strong> here making a paragraph.</P>

When that's coming back out of the serializer, it's coming out as
this, which Firefox chokes on:

<P>Some text goes <strong/> here making a paragraph.</P>

Likewise for <textarea /> and some other tags - Firefox rendering gets
completely thrown off when it encounters a few certain tags in
empty-tag XML style rather than html style.  The code I'm using to set
up the transformer for output is this:

transformer.setOutputProperty(OutputKeys.METHOD, "html");
transformer.setOutputProperty(OutputKeys.MEDIA_TYPE, "text/html");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
transformer.transform(new DOMSource(domDocument), new
StreamResult(stringWriter));

So I'm not sure why I'm getting things that look like XML when the tag is empty.

I'm using Xalan 2.7.1 and Xerces 2.9.1, and this is a small enough
code base I'm pretty sure there are no jar conflicts sneaking in old
versions.  Rather I suspect I'm misunderstanding something about the
serialization process or xml / html specifications.

Thanks for any help you can provide.


Jenny Brown