How to rename XML attributes from Java classes using JAXB annotations?

Question

I have this class defintion:

@XmlRootElement
public class RssRoot {

private String _version;

private String _xmlns_content;

@XmlAttribute()
public String get_version() {
    return _version;
}

@XmlAttribute()
public String get_xmlns_content() {
    return _xmlns_content;
}

public void set_version(String version) {
  _version = version;
 }

 public void set_xmlns_content(String xmlnsContent) {
  _xmlns_content = xmlnsContent;
 }

 public RssRoot() {
  super();

  this._version = "2.0";
  this._xmlns_content = "http://purl.org/rss/1.0/modules/content/";
 }

}

And it generates this xml:

<rssRoot xmlnsContent="http://purl.org/rss/1.0/modules/content/" version="2.0"/>

However, I need to rename xmlnsContent to xmlns:content, and rssRoot, to rss. How can I do this?

I tried with @XmlAttribute(name = "xmlns:content") above the getter and near to the property declaration, but no luck. The thing fails with this message:

Root Exception stack trace: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnno tationExceptions Class has two properties of the same name "_xmlns_content" this problem is related to the following location: RssRoot

What else can I do?

axtavt · Accepted Answer · 2010-07-28 16:34:05Z

2

It may be better to use existing libraries for RSS support (such as ROME) instead of creating your own.

But if you actually want:

xmlns:content is not an attribute, it's a namespace declaration. JAXB adds it to the resulting XML automatically when resulting XML contains elements in that namespace (namespace of elements can be specified using namespace attribute in @XmlElement, @XmlRootElement, etc).
To rename rssRoot to rss, write @XmlRootElement(name = "rss").

answered Jul 28, 2010 at 16:34

axtavt

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