Remove namespace prefix while JAXB marshalling

Question

I have JAXB objects created from a schema. While marshalling, the xml elements are getting annotated with ns2. I have tried all the options that exist over the net for this problem, but none of them works. I cannot modify my schema or change package-info.java. Please help

Answer 1

After much research and tinkering I have finally managed to achieve a solution to this problem. Please accept my apologies for not posting links to the original references - there are many and I wasn't taking notes - but this one was certainly useful.

My solution uses a filtering XMLStreamWriter which applies an empty namespace context.

public class NoNamesWriter extends DelegatingXMLStreamWriter {    private static final NamespaceContext emptyNamespaceContext = new NamespaceContext() {      @Override     public String getNamespaceURI(String prefix) {       return "";     }      @Override     public String getPrefix(String namespaceURI) {       return "";     }      @Override     public Iterator getPrefixes(String namespaceURI) {       return null;     }    };    public static XMLStreamWriter filter(Writer writer) throws XMLStreamException {     return new NoNamesWriter(XMLOutputFactory.newInstance().createXMLStreamWriter(writer));   }    public NoNamesWriter(XMLStreamWriter writer) {     super(writer);   }    @Override   public NamespaceContext getNamespaceContext() {     return emptyNamespaceContext;   }  } 

You can find a DelegatingXMLStreamWriter here.

You can then filter the marshalling xml with:

  // Filter the output to remove namespaces.   m.marshal(it, NoNamesWriter.filter(writer)); 

I am sure there are more efficient mechanisms but I know this one works.

Answer 2

For me, only changing the package-info.java class worked like a charm, exactly as zatziky stated :

package-info.java

 @javax.xml.bind.annotation.XmlSchema  (namespace = "http://example.com",  xmlns = {@XmlNs(prefix = "", namespaceURI = "http://example.com")},  elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)  package my.package; import javax.xml.bind.annotation.XmlNs;