Returning a MTOM message causes IOException (closed stream)
-----------------------------------------------------------
Key: AXIS2-795
URL: http://issues.apache.org/jira/browse/AXIS2-795
Project: Apache Axis 2.0 (Axis2)
Type: Bug
Components: databinding
Versions: 1.0
Environment: JDK 1.4.2_06
Reporter: Wolfram Kaiser
When accessing an attachment sent via MTOM on the client side I get the
following exception:
org.apache.axiom.om.OMException: javax.mail.MessagingException: Error in input
stream; nested exception is:
java.io.IOException: Attempted read on closed stream.
at org.apache.axiom.attachments.Attachments.getPart(Attachments.java:462)
at
org.apache.axiom.attachments.Attachments.getNextPart(Attachments.java:359)
at org.apache.axiom.attachments.Attachments.getPart(Attachments.java:324)
at
org.apache.axiom.attachments.Attachments.getDataHandler(Attachments.java:274)
at
org.apache.axiom.om.impl.mtom.MTOMStAXSOAPModelBuilder.getDataHandler(MTOMStAXSOAPModelBuilder.java:151)
at
org.apache.axiom.om.impl.llom.OMTextImpl.getDataHandler(OMTextImpl.java:341)
The client stub was generated using the default / no data binding (-> direct
Axiom access). I believe the error is in the generated stub:
public org.apache.axiom.om.OMElement echoPdf(org.apache.axiom.om.OMElement
param48) throws java.rmi.RemoteException {
...
_messageContext.getTransportOut().getSender().cleanup(_messageContext);
return (org.apache.axiom.om.OMElement) object;
}
The cleanup() seems to close the InputStream for the PDF/attachment while the
attachment has not been loaded in Axiom. Thus, when accessing the attachment in
the OMElement returned by MyStub.echoPdf() the aforementioned exception is
thrown. I would argue that the pull mechanism of Axiom fails in cases where the
associated InputStream has been closed while the generated stub has done its
processing already.
The following simple - but rather ugly - work-around seems to solve the problem:
public org.apache.axiom.om.OMElement echoPdf(org.apache.axiom.om.OMElement
param48) throws java.rmi.RemoteException {
...
org.apache.axiom.om.OMElement omElement = (org.apache.axiom.om.OMElement)
object;
// retrieving the content of a OMTextNode will load the associated data so
it can be accessed
// even after the InputStream from this web service call has been closed.
omElement.getText(); // or omElement.toString();
_messageContext.getTransportOut().getSender().cleanup(_messageContext);
return omElement;
The getText()/toString() has the effect that all binary data from the web
service call is loaded in the Axiom objects so they can be accessed in the
client code which uses the MyStub.echoPdf() method.
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