[jdom-interest] Namespaces and XMLOutputter

Jason Hunter jhunter at collab.net
Wed Jan 17 10:21:10 PST 2001

It works on my machine.  I saved your file to ns.xml, and ran this code
on it:

import java.util.*;
import org.jdom.*;
import org.jdom.input.*;
import org.jdom.output.*;

public class Tester2 {

  public static void main(String[] args) throws Exception {
    Document d = new SAXBuilder().build(args[0]);
    XMLOutputter outp = new XMLOutputter("", false);
    outp.output(d, System.out);

Here's the output:

% java Tester2 ns.xml
<?xml version="1.0" encoding="UTF-8"?>
<a:messagelist xmlns:a="http://www.a.com" xmlns:b="http://www.b.com"
<c:item1 value="500" />
</a:messagelist>C:/tmp/jdom 30 %


Thomas Riessler wrote:
> Hi,
> if I build a JDOM Document object from the following XML source (using SAXBuilder):
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <a:messagelist xmlns:a="http://www.a.com" xmlns:b="http://www.b.com" xmlns:c="http://www.c.com">
> <b:message1>
> <c:item1 value="500"/>
> </b:message1>
> </a:messagelist>
> and printout this unchanged Document with the output method of XMLOutputter, I do not get the same XML source returned. Instead output() writes the following code:
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <a:messagelist xmlns:a="http://www.a.com">
> <b:message1 xmlns:b="http://www.b.com">
> <c:item1 xmlns:c="http://www.c.com" value="500"/>
> </b:message1 xmlns:b="http://www.b.com">
> </a:messagelist xmlns:a="http://www.a.com">
> Note that the namespace declarations (including URLs) have moved from the root element to all Elements affected by a namespace prefix.
> This occurs with beta 5 and the nightly build I downloaded today.
> This is kind of a suprise to me since this problem (among others) was adressed by Kesav Kumar in his post on "Namespace prefix" (Fri, 13 Oct 2000 15:11:46 -0700 ) and has been reported to be fixed.
> This presents a big jdom usability problem to our project (we're currently evaluating it) since our XML docs are large and the namespace declarations would have a huge performance impact.
> Besides that, the target application we want to communicate with, cannot handle these declarations. Whats the current status of the problem?
> Thomas Riessler
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