I've fixed my problem with a SSAAJOutInterceptor and a custom interceptor
where I get the soap message, find the elements with the attribute
xsi:nil="true" and remove them.
Here are the details if anyone else has this issue - it might be useful
CXF.xml
<bean id="nillableSAAJInterceptor" class="NillableSAAJInterceptor"/>
<bean id="saajOutInterceptor"
class="org.apache.cxf.binding.soap.saaj.SAAJOutInterceptor"/>
<cxf:bus>
<cxf:features>
<cxf:logging/>
</cxf:features>
<cxf:outInterceptors>
<ref bean="saajOutInterceptor"/>
<ref bean="nillableSAAJInterceptor"/>
</cxf:outInterceptors>
</cxf:bus>
Customer interceptor
public class NillableSAAJInterceptor extends AbstractSoapInterceptor {
public NillableSAAJInterceptor() {
super(Phase.WRITE_ENDING);
}
String xpathString = "//*...@xsi:nil='true']";
@Override
public void handleMessage(SoapMessage message) throws Fault {
SOAPMessage soapMessage = message.getContent(SOAPMessage.class);
try {
SOAPBody body = soapMessage.getSOAPBody();
javax.xml.xpath.XPathFactory factory =
javax.xml.xpath.XPathFactory.newInstance();
javax.xml.xpath.XPath xpath = factory.newXPath();
xpath.setNamespaceContext(new XSINameSpaceContext());
javax.xml.xpath.XPathExpression expression =
xpath.compile(xpathString);
Object result = expression.evaluate(body,
XPathConstants.NODESET);
NodeList nodeList = (NodeList)result;
// Process the elements in the nodelist
for (int i = 0; i < nodeList.getLength(); i++) {
// Get element
Element element = (Element) nodeList.item(i);
logger.debug("element " + element.getNodeName());
logger.debug("element " + element.getAttribute("xsi:nil"));
// remove the element
element.getParentNode().removeChild(element);
}
} catch (Exception e) {
throw new Fault(e);
}
}
}
XSINameSpaceContext class
public class XSINameSpaceContext implements NamespaceContext
{
public String getNamespaceURI(String prefix)
{
if (prefix.equals("xsi")){
return "http://www.w3.org/2001/XMLSchema-instance";;
}
else{
return XMLConstants.NULL_NS_URI;
}
}
public String getPrefix(String namespace)
{
return null;
}
public Iterator getPrefixes(String namespace)
{
return null;
}
}
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