DOM : Obtaining encoding from an XML Doc

[Andy Jefferson <an...@ajsoft.net>]

Hi,

I'm reading in an XML doc (with JDK 1.4.2) and want to get hold of the
document encoding 'value'. I've currently got a URL and I'm reading it as
per

docElement = builder.parse(url.openStream()).getDocumentElement();

Looking through the various methods on Document etc, I see nothing like
getInputEncoding(), getEncoding, etc (I see these are available in JDK 1.5
- DOM level 3). Its presumably available somewhere with JDK 1.4.2.
Do I have to do a getElementsByTagName("encoding") from some Node ?

How do I get the encoding ?


TIA
-- 
Andy


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Re: DOM : Obtaining encoding from an XML Doc

[Martin Vysny <vy...@sozo.fns.uniba.sk>]

Andy Jefferson wrote:

>Looking through the various methods on Document etc, I see nothing like
>getInputEncoding(), getEncoding, etc (I see these are available in JDK 1.5
>- DOM level 3). 
>
You can use that DOM3 function by casting Document to Xerces's 
DocumentImpl class in J1-4-2 (actually, you can access some new DOM3 
functions this way, casting Node to NodeImpl etc.). DOM2 has no such 
function, AFAIK. When you'll start to use J1-5, just remove this cast
Martin Vysny

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Re: DOM : Obtaining encoding from an XML Doc

[Joseph Kesselman <ke...@us.ibm.com>]

If you have a Level 2 DOM, there is no portable way to retrieve the
original encoding name. This was introduced in DOM Level 3, which is
currently a Proposed Recommendation -- ie, it's believed to be stable but
has not yet been officially approved/adopted by the W3C.

______________________________________
Joe Kesselman, IBM Next-Generation Web Technologies: XML, XSL and more.
"The world changed profoundly and unpredictably the day Tim Berners Lee
got bitten by a radioactive spider." -- Rafe Culpin, in r.m.filk


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