How to let JAXB render boolean as 0 and 1, not true and false

Question

Got a quick question. Does anyone know how to let JAXB (marshall) render boolean fields as 1 and 0 instead of printing out \"true\" and \"false\"?

Answer 1

Having the same problem as user20298, I followed the hint by mtpettyp, and adapted it for my configuration.

My configuration is: - maven to build the project. - "org.jvnet.jaxb2.maven2" plugin in maven. - jaxb 2.2.6 - In this occasion, I was making Java classes for the kml 2.2 (ogckml22.xsd)

And I stumbled upon the problem of the booleans to be rendered as 'true/false', when Google maps wants them to be as '1/0'

This is the plugin configuration in maven:

org.jvnet.jaxb2.maven2
maven-jaxb2-plugin

    
        generate-sources
        
            generate
        
    


    src/main/generated
    true
    true

I added to the src/main/resources folder a jaxb-bindings.xjb file with the following content:

    

    
        
        
    
    ...
    ...

The adapter class is like:

package path.to.my;

import javax.xml.bind.annotation.adapters.XmlAdapter;

/**
 * Utility class to correctly render the xml types used in JAXB.
 */
public class JaxbBooleanAdapter extends XmlAdapter
{
    @Override
    public Boolean unmarshal(String v) throws Exception
    {
        if ("1".equals(v))
        {
            return true;
        }
        return false;
    }

    @Override
    public String marshal(Boolean v) throws Exception
    {
        if (v == null)
        {
            return null;
        }
        if (v)
        {
            return "1";
        }
        return "0";
    }
}