Wildfly 10 UnmarshalException in empty date tags in the response

Question

We are migrating our application from Jboss 6 to Wildfly 10, most the web services are running ok, but we are facing a problem with empty date tags in the response from an external web service:

java.security.PrivilegedActionException: javax.xml.bind.UnmarshalException
- with linked exception:
[com.sun.istack.SAXParseException2; lineNumber: 1; columnNumber: 784; ]


Caused by: java.lang.IllegalArgumentException: 
at org.apache.xerces.jaxp.datatype.XMLGregorianCalendarImpl$Parser.parseBigInteger(Unknown Source)
at org.apache.xerces.jaxp.datatype.XMLGregorianCalendarImpl$Parser.parse(Unknown Source)
at org.apache.xerces.jaxp.datatype.XMLGregorianCalendarImpl.<init>(Unknown Source)
at org.apache.xerces.jaxp.datatype.DatatypeFactoryImpl.newXMLGregorianCalendar(Unknown Source)
at __redirected.__DatatypeFactory.newXMLGregorianCalendar(__DatatypeFactory.java:180)
at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$12.parse(RuntimeBuiltinLeafInfoImpl.java:592)
... 158 more

The line and column are the start of the following element

...<ADATE><date />...

As you can see date is empty and causes the parser to fail (I assume that based on the evidence)

This is a fragment of the WSDL definition for that XML element:

   <xsd:element name="ADATE">
      <xsd:complexType>
            <xsd:sequence>
               <xsd:element name="date" minOccurs="1" maxOccurs="100" type="xsd:date"/>
            </xsd:sequence>
      </xsd:complexType>
   </xsd:element>

We have generated our client classes with Apache CXF 3.1.6 as: wsdl2java -frontend jaxws21 ....

• When using SEIStub implementation the call works for the webservice.
• When using the same code inside of Wildfly it does not work throwing the described exception.
• Is this all info needed?

Is there any way another JAXB implementation that can be configured in Wildfly 10?, how?

Thanks

Answer 1

We created an extension of the XmlAdapter and we declared the class in the package-info.java (from the response folder -> "sysrpc", an old cxf) as following:

package XXX; 

import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;

import java.util.Date;


public class XMLGregorianCalendarXmlAdapter extends XmlAdapter<String, XMLGregorianCalendar>{

@Override
public XMLGregorianCalendar unmarshal(String v) throws Exception {
    if(v==null ||  v.trim().isEmpty()) {
        return null;
    }
    return DatatypeFactory.newInstance().newXMLGregorianCalendar(v);
}

@Override
public String marshal(XMLGregorianCalendar v) throws Exception {
    return v==null ? null : /*do something with the XMLGregorianCalendar */;
}

}

Then in the package-info.java of the generated classes from wsdl2java command

@javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters
({
   @javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter(value=XXX.XMLGregorianCalendarXmlAdapter.class,type=javax.xml.datatype.XMLGregorianCalendar.class),
   @javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter(value=XXX.XMLGregorianCalendarXmlAdapter.class,type=javax.xml.datatype.XMLGregorianCalendar.class)
})
@javax.xml.bind.annotation.XmlSchema(namespace = "urn:external-web-service:SYSRPC")
package YYYY.sysrpc;

To debug the communication with an external web service:

in the standalone.xml (located in $WILDFLY_HOME/standalone/configuration)

add

<property name="org.apache.cxf.logging.enabled" value="true"/>

At the end of the system-properties tag

Answer 2

You have an error in XML: tag date is empty, but schema says it has to have some value. Try to write correct date in it.

If you want it to be empty you can write

 xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

in XML and

 nillable="true" 

in XSD.