https://github.com/FasterXML/jackson-dataformat-xml: Data format extension for Jackson (http://jackson.codehaus.org) to offer alternative support for serializing POJOs as XML and deserializing XML as pojos. Support implemented on top of Stax API (javax.xml.stream), by implementing core Jackson Streaming API types like JsonGenerator, JsonParser and JsonFactory. Some data-binding types overridden as well (ObjectMapper sub-classed as XmlMapper). (FasterXML)
  • Tatu Saloranta
  • Christopher Currie
  • Paul Brown 
package com.fasterxml.jackson.dataformat.xml.jaxb;

import com.fasterxml.jackson.databind.introspect.*;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.dataformat.xml.XmlAnnotationIntrospector;
import com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector;


Alternative AnnotationIntrospector implementation that builds on JaxbAnnotationIntrospector. 
 NOTE: since version 2.4, it may NOT be necessary to use this class; instead, plain JaxbAnnotationIntrospector should fully work. With previous versions some aspects were not fully working and this class was necessary. 
/**
 * Alternative {@link com.fasterxml.jackson.databind.AnnotationIntrospector}
 * implementation that
 * builds on {@link JaxbAnnotationIntrospector}.
 *<p>
 * NOTE: since version 2.4, it may NOT be necessary to use this class;
 * instead, plain {@link JaxbAnnotationIntrospector} should fully work.
 * With previous versions some aspects were not fully working and this
 * class was necessary.
 */
public class XmlJaxbAnnotationIntrospector
    extends JaxbAnnotationIntrospector
    implements XmlAnnotationIntrospector
{
    private static final long serialVersionUID = 1L; // since 2.7

    @Deprecated
    public XmlJaxbAnnotationIntrospector() {
        super();
    }

    public XmlJaxbAnnotationIntrospector(TypeFactory typeFactory) {
        super(typeFactory);
    }
    
    /*
    /**********************************************************************
    /* XmlAnnotationIntrospector overrides
    /**********************************************************************
     */
    
    @Override
    public String findNamespace(Annotated ann) {
        return super.findNamespace(ann);
    }

    @Override
    public Boolean isOutputAsAttribute(Annotated ann) {
        return super.isOutputAsAttribute(ann);
    }
    
    @Override
    public Boolean isOutputAsText(Annotated ann) {
        return super.isOutputAsText(ann);
    }

    @Override
    public Boolean isOutputAsCData(Annotated ann) {
        //There is no CData annotation in JAXB
        return null;
    }

    @Override
    public void setDefaultUseWrapper(boolean b) {
        // nothing to do with JAXB
    }
}