16:22:50,265 ERROR [SOAPElementAxisImpl] Cannot convert SAX

[avrahamr]

I just downloaded JBoss 4.0.2 and tried to deploy my previous applications developed under 4.0.1sp1.

One of them is a JAX-RPC Collector, trying to get a String from a SOAPMessage. It was working on 4.0.0 to 4.0.1sp1, now I got an exception. Someone has an Idea why, or another way to get the Soap Message as String that will work for all versions.

Here is the code:

...
SOAPMessageContext soapContext = (SOAPMessageContext) messageContext;
SOAPMessage soapMsg = soapContext.getMessage();
SOAPEnvelope envelope = soapMsg.getSOAPPart().getEnvelope();
String soapText = nodeToString(envelope);
...
private String nodeToString(Node node) throws TransformerFactoryConfigurationError, TransformerException {

 Source domSource = new DOMSource(node);
 StringWriter writer = new StringWriter();
 Result result = new StreamResult(writer);
 Transformer xformer = TransformerFactory.newInstance().newTransformer();
 xformer.transform(domSource, result); //Exception HERE!!
 return writer.toString();
}

And the Exception:

16:22:50,245 ERROR [SOAPElementAxisImpl] Cannot convert SAX to DOM attributes
org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.
at org.apache.xerces.dom.CoreDocumentImpl.checkNamespaceWF(Unknown Source)
at org.apache.xerces.dom.AttrNSImpl.setName(Unknown Source)
at org.apache.xerces.dom.AttrNSImpl.<init>(Unknown Source)
at org.apache.xerces.dom.CoreDocumentImpl.createAttributeNS(Unknown Source)
at org.jboss.axis.message.SOAPElementAxisImpl.convertAttrSAXtoDOM(SOAPElementAxisImpl.java:724)
at org.jboss.axis.message.SOAPElementAxisImpl.getAttributes(SOAPElementAxisImpl.java:686)
at org.apache.xml.utils.TreeWalker.startNode(TreeWalker.java:316)
at org.apache.xml.utils.TreeWalker.traverse(TreeWalker.java:159)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:337)
at ****.nodeToString(***.java:382)
...

Thanks
Avraham

[danoakland]

I ran into this same problem -- it occurs when parsing a SOAP response and there is an attribute with a URI. The JBoss code that causes the exception is in the org.jboss.axis.message.SOAPElementAxisImpl at line 724. The 4.0.2 source code I downloaded shows this (starting with line 712):

if (uri != null && uri.trim().length() > 0)
 {
 // filterring out the tricky method to differentiate the null namespace
 // -ware case
 if (uri.equals("intentionalNullURI"))
 {
 uri = null;
 }

 if (qname.startsWith("xmlns:") == false && qname.startsWith("xsi:") == false)
 qname = "xmlns:" + qname;

 Attr attr = doc.createAttributeNS(uri, qname);
 attr.setValue(value);
 domAttributes.setNamedItemNS(attr);
 }

What happens is that any attribute with a URI, say for example, "POS:lineTotal" ends up being passed to the Document.createAttributeNS method as "xmlns:POS:lineTotal". It seems to be a bug. If I can find some time to create a test case, I'll submit it to JIRA.

By the way, commenting out lines 721 and 722 (where qname is set to "xmlns:" + qname) seems to correct the problem for me, but I'm not sure what consequences that would have in other cases.

Dan

[avrahamr]

I found a way to make it work on 4.0.2. I didn't test it back to 4.0.1:

SOAPMessageContext soapContext = (SOAPMessageContext) messageContext;
SOAPMessage soapMsg = soapContext.getMessage();
Source source = soapMsg.getSOAPPart().getContent();
StringWriter writer = new StringWriter();
Result result = new StreamResult(writer);
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.transform(source, result);
return writer.toString();

[thomas.diesler]

This has been assigned to

http://jira.jboss.com/jira/browse/JBWS-223