java/ soapfault problem in web services

Question

Hi,

I have the following problem: I am using SAAJ for web services. I have a SOAPMessage with the following soap fault:

<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"&gt;
    <S:Body>
    <S:Fault xmlns:ns3="http://www.w3.org/2003/05/soap-envelope"&gt;
        <faultcode>S:Server</faultcode> 
        <faultstring>java.lang.NullPointerException</faultstring> 
        <detail>
        <ns2:exception xmlns:ns2="http://jax-ws.dev.java.net/" class="java.lang.NullPointerException" note="To disable this feature, set com.sun.xml.internal.ws.fault.SOAPFaultBuilder.disableCaptureStackTrace system property to false">
            <ns2:stackTrace>
                <ns2:frame class="myClass" file="HandlerFile.java" line="261" method="invoke" /><ns2:frame class="myClass" file="HandlerFile.java" line="1" method="invoke" /><ns2:frame class="com.sun.xml.internal.ws.api.server.InstanceResolver$1" line="unknown" method="invokeProvider" /></ns2:stackTrace>
        </ns2:exception>    
        </detail>
        </S:Fault>
       </S:Body>
</S:Envelope>

But if I try to get the details I get nothing!
I do it as follows:

String code = soapMsg.getSOAPBody().getFault().getFaultCode();
String faultString = soapMsg.getSOAPBody().getFault().getFaultString();
Detail detail = reply.getSOAPBody().getFault().getDetail();
if(detail == null)
   System.out.println("No detail");
else
   System.out.println("Detail value is "+detail.getNodeValue());
Iterator it = reply.getSOAPBody().getFault().getDetail().getDetailEntries();
StringBuilder details = new StringBuilder();
details.append("Detail:");
while(it.hasNext())
{
  System.out.println("Has details");
  DetailEntry temp = (DetailEntry) it.next();
  System.out.println(temp.getTextContent());
  System.out.println(temp.getValue());
  details.append(temp.getValue());
  details.append("-");
  Iterator it2 = temp.getChildElements();
  while(it2.hasNext())
  {
    Node t = (Node) it2.next();
    System.out.println("Node value:"+t.getNodeValue());
  }
}
System.out.println("Details:"+details.toString());

It is printed:
Detail value is null
Has details
Details:null-
Node value:null
Can someone help on this? Why can I not get the details of SOAP fault? It is included in the SOAP message?

UPDATE: The code and the faultstring is printed correctly.
I.e.
code:S:Server
FaultString:java.lang.NullPointerException

Thanks

Answer 1

The Method getNodeValue will always return null for a DOM element, getTextContent would be better but in your case all information is contained in attributes of nested elements. You would have to traverse these nested elements with code like the following. Please note that I haven't tested the code yet.

String uri = "http://jax-ws.dev.java.net/";
QName qnException = new QName(uri, "exception");
QName qnStackTrace = new QName(uri, "stackTrace");
QName qnFrame = new QName(uri, "frame");

SOAPFault fault = soapMsg.getSOAPBody().getFault();
System.out.println("code=" + fault.getFaultCode());
System.out.println("faultString=" + fault.getFaultString());

for (Iterator i=fault.getDetail().getDetailEntries(); i.hasNext(); ) {
    DetailEntry detailEntry = (DetailEntry)i.next();

    for (Iterator j=detailEntry.getChildElements(qnException); j.hasNext(); ) {
        SOAPElement exception = (SOAPElement)j.next();
        System.out.println("exception class=" + exception.getAttribute("class"));

        for (Iterator k=exception.getChildElements(qnStackTrace); k.hasNext(); ) {
            SOAPElement stackTrace = (SOAPElement)k.next();

            for (Iterator l=stackTrace.getChildElements(qnFrame); l.hasNext(); ) {
                SOAPElement frame = (SOAPElement)l.next();
                System.out.println(" class=" + frame.getAttribute("class"));
                System.out.println(" file =" + frame.getAttribute("file"));
            }
        }
    }
}