Xalan Transformer factory not found in JBoss eap 6.1

Question

We have an ear application with a singleton ejb which sets up JAXP configuration. We set the TransformerFactory system property via code, with System.setProperty():

System.setProperty("javax.xml.transform.TransformerFactory", "org.apache.xalan.processor.TransformerFactoryImpl");

The jboss-deployment-structure.xml file content is the following:

<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">
    <ear-subdeployments-isolated>false</ear-subdeployments-isolated>
    <deployment>    
        <dependencies>
            <module name="org.apache.xalan" slot="main" export="true"/>
            <module name="org.apache.xerces" slot="main" export="true" />               
        </dependencies>
    </deployment>
</jboss-deployment-structure>

we got the exception:

Exception in thread "main" javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl not found

If I use the following line of code instead of setting the system property, it works.

TransformerFactory.newInstance("org.apache.xalan.processor.TransformerFactoryImpl", TransformerFactory.class.getClassLoader());

I would like to know why it doesn't work. Do I misunderstand something about JBoss modules class loading?

Xalan is pretty old stuff. I think it's all built into JDK now. — duffymo, Feb 21 '14 at 10:00
I Know Xalan is the default implementation, but that's not the point, I would like to know why there's an error with JBoss — landal79, Feb 21 '14 at 10:21
The problem is related to how the jboss as class loading works. In the end we solved without setting the system property and letting jboss to load Xalan. — landal79, Dec 14 '15 at 10:28

Xalan Transformer factory not found in JBoss eap 6.1

0 Answers0