I took the following steps: 

1. Change RawXMLINOutMessageReceiver to RPCMessageReceiver in Axis2 MTOM
sample services.xml (per previous axis2 mailing list posting)
2. Deploy the MTOM sample in Weblogic 9.1
3. Save auto-generated WSDL from browser
4. Run WSDL2Java (with %WSDL% pointing to the saved auto-generated
WSDL):

java org.apache.axis2.wsdl.WSDL2Java -uri %WSDL% -ss -sd -g -o
..\client2 -p samplepkg

I get the following error (wsdl attached):

log4j:WARN No appenders could be found for logger
(org.apache.axis2.wsdl.codegen
.writer.PrettyPrinter).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main"
org.apache.axis2.wsdl.codegen.CodeGenerationException
: org.apache.axis2.wsdl.codegen.CodeGenerationException:
java.lang.RuntimeExcept
ion: WSDL writing failed!
        at
org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGener
ationEngine.java:185)
        at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:32)
        at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:21)
Caused by: org.apache.axis2.wsdl.codegen.CodeGenerationException:
java.lang.Runt
imeException: WSDL writing failed!
        at
org.apache.axis2.wsdl.codegen.emitter.AxisServiceBasedMultiLanguageEm
itter.emitSkeleton(AxisServiceBasedMultiLanguageEmitter.java:640)
        at
org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGener
ationEngine.java:168)
        ... 2 more
Caused by: java.lang.RuntimeException: WSDL writing failed!
        at
org.apache.axis2.wsdl.codegen.writer.WSDLWriter.writeWSDL(WSDLWriter.
java:45)
        at
org.apache.axis2.wsdl.codegen.emitter.AxisServiceBasedMultiLanguageEm
itter.writeWSDLFiles(AxisServiceBasedMultiLanguageEmitter.java:737)
        at
org.apache.axis2.wsdl.codegen.emitter.AxisServiceBasedMultiLanguageEm
itter.emitSkeletonService(AxisServiceBasedMultiLanguageEmitter.java:703)
        at
org.apache.axis2.wsdl.codegen.emitter.AxisServiceBasedMultiLanguageEm
itter.emitSkeleton(AxisServiceBasedMultiLanguageEmitter.java:638)
        ... 3 more
Caused by: org.apache.axis2.AxisFault: null; nested exception is:
        java.lang.NullPointerException
        at
org.apache.axis2.description.AxisService.getWSDL(AxisService.java:558
)
        at
org.apache.axis2.description.AxisService.printWSDL(AxisService.java:5
45)
        at
org.apache.axis2.wsdl.codegen.writer.WSDLWriter.writeWSDL(WSDLWriter.
java:40)
        ... 6 more
Caused by: java.lang.NullPointerException
        at java.io.Writer.write(Unknown Source)
        at
com.ctc.wstx.sw.BaseNsStreamWriter.doWriteAttr(BaseNsStreamWriter.jav
a:442)
        at
com.ctc.wstx.sw.BaseNsStreamWriter.writeAttribute(BaseNsStreamWriter.
java:205)
        at
org.apache.axiom.om.impl.MTOMXMLStreamWriter.writeAttribute(MTOMXMLSt
reamWriter.java:138)
        at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeAttribute(OMS
erializerUtil.java:76)
        at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeAttributes(OM
SerializerUtil.java:266)
        at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeStartpart(OMS
erializerUtil.java:232)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:765)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:754)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:769)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:754)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:769)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:754)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:769)
        at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMEleme
ntImpl.java:754)
        at
org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:31
0)
        at
org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:35
1)
        at
org.apache.axis2.description.AxisService.getWSDL(AxisService.java:554
)
        ... 8 more

Attachment: Axis2-MTOM-Sample.wsdl
Description: Axis2-MTOM-Sample.wsdl

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