How to remove Namespace and Nillable properties in generated XML by marshalling through JAXB

Question

I have following XSD file:-

Answer 1

Java Model

I generated the default Java model from your XML Schema using XJC.

Demo Code

Demo

The demo code below populates the object model (setting the centralCaseID property to null) and marshals it to XML.

import javax.xml.bind.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance("emp");

        ObjectFactory objectFactory = new ObjectFactory();
        Root root = objectFactory.createRoot();

        CaseDetail caseDetail = objectFactory.createCaseDetail();
        caseDetail.setCentralCaseID(null);
        root.getCaseDetail().add(caseDetail);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(root, System.out);
    }

}

Output

Below is the output from running the demo code.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root xmlns="emp">
    <Case_Detail/>
</root>

Items to note:

• A namespace declaration was written out. This is because the @XmlSchema annotation is present on the package-info class that maps the namespace qualification (see: http://blog.bdoughan.com/2010/08/jaxb-namespaces.html).

  @javax.xml.bind.annotation.XmlSchema(
      namespace = "emp", 
      elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
  package emp;
  

• The element corresponding to the centralCaseID property does not appear in the XML. This is the default behaviour regarding null properties (see: http://blog.bdoughan.com/2012/04/binding-to-json-xml-handling-null.html).