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https://issues.apache.org/jira/browse/XMLBEANS-562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17354457#comment-17354457
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Sriram commented on XMLBEANS-562:
---------------------------------

We face the same issue due to the fact that weblogic is loading the old 
xmlbeans jar from Oracle\Middleware\Oracle_Home\wlserver\modules. And there is 
no workaround as of now. 
{code:java}
<prefer-application-packages>
<prefer-application-packages>        
<package-name>org.apache.*</package-name> 
<package-name>org.apache.xmlbeans.*</package-name>
</prefer-application-packages>
{code}
The above code in weblogic-application.xml also does not solve this issue.

> java.lang.ClassCastException: 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl cannot be cast to 
> org.apache.xmlbeans.SchemaTypeLoader
> -----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: XMLBEANS-562
>                 URL: https://issues.apache.org/jira/browse/XMLBEANS-562
>             Project: XMLBeans
>          Issue Type: Bug
>          Components: XmlObject
>    Affects Versions: Version 4.0.0
>            Reporter: Annapurna Theerthala
>            Priority: Critical
>             Fix For: Version 5.0.1
>
>
> I am getting the below error when exporting excel using POI 5 with xmlbeans 4.
>  
> `at java.lang.Class.forName0(Native Method)
>  ````at java.lang.Class.forName(Class.java:348)
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeLoaderImpl.build(SchemaTypeLoaderImpl.java:161)
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl.<init>(SchemaTypeSystemImpl.java:168)
>  ````at 
> org.apache.xmlbeans.metadata.system.sXMLSCHEMA.TypeSystemHolder.<init>(TypeSystemHolder.java:41)
>  Truncated. see log file for complete stacktrace
> Caused By: org.apache.xmlbeans.XmlRuntimeException: 
> java.lang.ClassCastException: 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl cannot be cast to 
> org.apache.xmlbeans.SchemaTypeLoader
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeLoaderImpl.build(SchemaTypeLoaderImpl.java:164)
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl.<init>(SchemaTypeSystemImpl.java:168)
>  ````at 
> org.apache.xmlbeans.metadata.system.sXMLTOOLS.TypeSystemHolder.<init>(TypeSystemHolder.java:41)
>  ````at 
> org.apache.xmlbeans.metadata.system.sXMLTOOLS.TypeSystemHolder.<clinit>(TypeSystemHolder.java:44)
>  ````at java.lang.Class.forName0(Native Method)
>  Truncated. see log file for complete stacktrace
> Caused By: java.lang.ClassCastException: 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl cannot be cast to 
> org.apache.xmlbeans.SchemaTypeLoader
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeLoaderImpl.build(SchemaTypeLoaderImpl.java:162)
>  ````at 
> org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl.<init>(SchemaTypeSystemImpl.java:168)
>  ````at 
> org.apache.xmlbeans.metadata.system.sXMLTOOLS.TypeSystemHolder.<init>(TypeSystemHolder.java:41)
>  ````at 
> org.apache.xmlbeans.metadata.system.sXMLTOOLS.TypeSystemHolder.<clinit>(TypeSystemHolder.java:44)
>  ````at java.lang.Class.forName0(Native Method)
>  Truncated. see log file for complete stacktrace
> I have checked that my `xmlbeans` come from `xmlbeans-4.0.0.jar` and the 
> `ooxml-schema` has been removed and replaced with `poi-ooxml-full-5.0.0.jar`
> {{Tried with poi-ooxml-schemas-5.0.0.jar as well. still the same issue.}}
>  



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