Working at a large company with long-lived branches and not enough continuous integration, I recently switched to a newer branch (i.e., one in which other groups have been doing a fair bit of development and making a fair number of changes behind my back) and found that trying to start my application, I get the error message below, over and over again in the logs, and no working application.
Dec 20, 2011 2:55:16 PM com.sun.xml.internal.messaging.saaj.soap.MessageImpl
saveChanges
SEVERE: SAAJ0540: Error during saving a multipart message
Error
DOMSource cannot be processed: check that saxon8-dom.jar is on the classpath
Dec 20, 2011 2:55:17 PM com.sun.xml.internal.messaging.saaj.soap.MessageImpl
saveChanges
SEVERE: SAAJ0539: Unable to get header stream in saveChanges
It looks as though saveChanges() is being called from writeTo(SOAPMEssage, OutputStream) in org.springframework.ws.soap.saaj.Saaj13Implementation.
saxon8.jar is in WEB-INF/lib, and so are saaj-1.2.jar, saaj-api-1.3.jar, and saaj-impl-1.3.jar, but as far as I can tell in the debugger, the offending class is in the JDK's rt.jar.
I suspect some sort of JAR versioning / classpath ordering error but don't know where to start trying to fix it. Any suggestions?
"Solved" the problem by eliminating a dependency on Nux. Still don't know what the real issue was.