Issue with WAS 7 using Apache CXF and MTOM

Problem
Problem generating schema when using MTOM with Websphere 7
Caused by: javax.xml.stream.XMLStreamException: The namespace URI "http://www.w3.org/2005/05/xmlmime" has not been bound to a prefix. at com.ibm.xml.xlxp2.api.stax.msg.StAXMessageProvider.throwXMLStreamException(StAXMessageProvider.java:62) at com.ibm.xml.xlxp2.api.stax.XMLStreamWriterBase.writeAttribute(XMLStreamWriterBase.java:471) at com.ibm.xml.xlxp2.api.stax.XMLOutputFactoryImpl$XMLStreamWriterProxy.writeAttribute(XMLOutputFactoryImpl.java:161) at org.apache.cxf.staxutils.StaxUtils.writeElement(StaxUtils.java:637) at org.apache.cxf.staxutils.StaxUtils.writeElement(StaxUtils.java:550) at org.apache.cxf.staxutils.StaxUtils.writeNode(StaxUtils.java:667) [... etc ...] at org.apache.cxf.transport.http.WSDLQueryHandler.writeResponse(WSDLQueryHandler.java:218) ... 38 more

Solution
Summary: The problem is the IBM Stax parser implementation. Use the Woodstox parser instead.
Details: Daniel Kulp from the Apache CXF team suggests the solution of using the Woodstox parser instead of IBM's stax parser.
But it took me quite a bit of digging to figure out how to accomplish this without any major code changes.

Here's how I made it work without any code changes:

Grab a copy of woodstox-core-lgpl-4.0.7.jar and make sure it's in your application's classpath.
Follow these instructions to add the following system variables to websphere:
- name: javax.xml.parsers.DocumentBuilderFactory
  value: org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
- name: javax.xml.parsers.SAXParserFactory
  value: org.apache.xerces.jaxp.SAXParserFactoryImpl
- name: javax.xml.transform.TransformerFactory
  value: org.apache.xalan.processor.TransformerFactoryImpl
- name: javax.xml.stream.XMLInputFactory
  value: com.ctc.wstx.stax.WstxInputFactory
- name: javax.xml.stream.XMLOutputFactory
  value: com.ctc.wstx.stax.WstxOutputFactory
- name: javax.xml.stream.XMLEventFactory
  value: com.ctc.wstx.stax.WstxEventFactory
Restart Websphere

update
Alternatively, instead of setting this in WAS, you can add these to your web.xml config file:

<context-param>
	<param-name>javax.xml.parsers.DocumentBuilderFactory</param-name>
	<param-value>org.apache.xerces.jaxp.DocumentBuilderFactoryImpl</param-value>
</context-param>
<context-param>
	<param-name>javax.xml.parsers.SAXParserFactory</param-name>
	<param-value>org.apache.xerces.jaxp.SAXParserFactoryImpl</param-value>
</context-param>
<context-param>
	<param-name>javax.xml.transform.TransformerFactory</param-name>
	<param-value>org.apache.xalan.processor.TransformerFactoryImpl</param-value>
</context-param>
<context-param>
	<param-name>org.apache.xalan.xsltc.trax.TransformerFactoryImpl</param-name>
	<param-value>org.apache.xalan.processor.TransformerFactoryImpl</param-value>
</context-param>
<context-param>
	<param-name>javax.xml.stream.XMLOutputFactory</param-name>
	<param-value>com.ctc.wstx.stax.WstxOutputFactory</param-value>
</context-param>
<context-param>
	<param-name>javax.xml.stream.XMLEventFactory</param-name>
	<param-value>com.ctc.wstx.stax.WstxEventFactory</param-value>
</context-param>

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By Jeffrey Knight on March 6, 2010 10:50 PM | Permalink | Comments (0) | TrackBacks (0)

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Issue with WAS 7 using Apache CXF and MTOM

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