Jaxb generated xml - problem with root element prefix

Question

I am trying to generate xml using jaxb. I created xsd and generated java classes. But when I generate xml, I am geeting prefix ns2 to the root tag, which I don't want.

ex: I want root tag to be

 <report>
   <id>rep 1</id>
</report>

, But getting as

<ns2:report>
....
</ns2:report>

In the generated java class, I gave annotation as @XmlRootElement(name="report",namespace="urn:report")

Can some one pls help

bdoughan · Accepted Answer · 2010-11-30T17:01:54.343

If this is your class:

package example;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="report",namespace="urn:report")
public class Root {

    private String id;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

}

Then it makes sense that there is a prefix on the root element, because you have specified that the "root" element is namespace qualified and the "id" element is not.

<ns2:report xmlns:ns2="urn:report">
    <id>123</id>
</ns2:report>

If you add a package-info class to your model, you can leverate the @XmlSchema annotation:

@XmlSchema(
        namespace = "urn:report",
        elementFormDefault = XmlNsForm.QUALIFIED)
package example;

import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;

Then the JAXB implementation may choose to leverage the default namespace, but note now all of the elements are namespace qualified which may or may not match your XML schema:

<report xmlns="urn:report">
    <id>123</id>
</report>

For more information on JAXB and namespaces see:

http://bdoughan.blogspot.com/2010/08/jaxb-namespaces.html

If there are two namespace in the object, it turns to be like ``, then some part will use ` — navins, Aug 26 '14 at 11:26
ok, see http://stackoverflow.com/questions/25518253/jaxb-generated-xml-remove-namespace-prefix — navins, Aug 27 '14 at 02:58

score 1 · Answer 2 · edited May 03 '14 at 11:23

1

The blog entry Customizing JAXB shows the alternatives provided by implementing a PreferredMapper . Unfortunately it explains, that is not possible to fully suppress namespaces.

edited May 03 '14 at 11:23

BenMorel

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answered Nov 30 '10 at 10:29

stacker

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1

Thanks. Useful. But the preferred mapper changes the prefix, doesn't remove the prefix. At the bottom of the page, they are saying it is not possible t remove the prefix. I am trying on the work arounds. – crazyTechie Nov 30 '10 at 11:00

score 1 · Answer 3 · edited May 23 '17 at 10:30

1

Take a look at this answer. It describes how to use a SAX Filter to remove any namespace.

edited May 23 '17 at 10:30

Community

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answered Nov 30 '10 at 10:35

dogbane

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score 0 · Answer 4 · edited Aug 24 '12 at 07:41

0

Use this attribute in your root element of your schema: elementFormDefault="qualified" So for instance:

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">

edited Aug 24 '12 at 07:41

j0k

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answered Aug 23 '12 at 20:51

MeplatMasher

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score 0 · Answer 5 · edited May 23 '17 at 11:55

Somehow the accepted answer did not work for me. I got success when I found solutions in some related stockOverflow questions involving DelegatingXMLStreamWriter from cxf and a filter, NoNamesWriter. The implementation I used with NoNamesWriter:

public class NoNamesWriter extends DelegatingXMLStreamWriter 
{
    @Override
    public void writeStartElement(String prefix, String local, String uri) throws XMLStreamException {
        delegate.writeStartElement("", local, uri);
    }   

    public static XMLStreamWriter filter(FileOutputStream fileOutputStream) throws XMLStreamException {
        return new NoNamesWriter(XMLOutputFactory.newInstance().createXMLStreamWriter(fileOutputStream));
    }

    public NoNamesWriter(XMLStreamWriter writer) {
        super(writer);
    }

}

Invoke the same as described here, like:

xmlmarshaller.marshal(xc, NoNamesWriter.filter(new FileOutputStream(outfile, false));

Jaxb generated xml - problem with root element prefix

5 Answers5

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