java.lang.ClassCastException: com.ibm.xml.xlxp2.api.stax.XMLEventFactoryImpl incompatible with javax.xml.stream.XMLEventFactory

[sheltzer]

I am attempting to upgrade my project to Spring 5 running on Websphere 8.5.
We are using the IBM JDK 1.8_64.

I'm running into an issue reading an XLSX file and I cannot figure out how
to get past it. I've played with stax, xml-api, xalan and xerces jar
versions and cannot find a magical combination.

Caused by: java.lang.ClassCastException:
com.ibm.xml.xlxp2.api.stax.XMLEventFactoryImpl incompatible with
javax.xml.stream.XMLEventFactory
at
javax.xml.stream.XMLEventFactory.newInstance(XMLEventFactory.java:30)
at
org.apache.poi.openxml4j.opc.internal.marshallers.PackagePropertiesMarshaller.<clinit>(PackagePropertiesMarshaller.java:41)




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[pj.fanning]

It looks like that IBM pull parser is incompatible with what POI needs.
Could you try adding https://github.com/FasterXML/woodstox to your classpath
to see if that is loaded in preference to the IBM one?



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