javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V error on bpmn file

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Marco Luisinho

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Nov 7, 2016, 11:34:04 AM11/7/16

to Drools Usage

Hello,

I'm executing drools in java but I'm getting the following error when a bpmn file is added to the KieBuilder buildAll() method.

java.lang.AbstractMethodError: javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V
    at org.drools.core.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:228)
    at org.drools.core.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:180)
    at org.jbpm.compiler.xml.XmlProcessReader.read(XmlProcessReader.java:61)
    at org.jbpm.compiler.ProcessBuilderImpl.addProcessFromXml(ProcessBuilderImpl.java:284)
    at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addProcessFromXml(KnowledgeBuilderImpl.java:711)
    at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl$6.build(CompositeKnowledgeBuilderImpl.java:224)
    at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildResourceType(CompositeKnowledgeBuilderImpl.java:162)
    at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildProcesses(CompositeKnowledgeBuilderImpl.java:126)
    at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:106)
    at org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages(AbstractKieModule.java:244)
    at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:64)
    at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:230)
    at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:198)

If I don't add the ruleflow file (bpmn) to the KieBuilder the other resources (drl - rules files) are correctly instantiated.
The error occurs in the following line of code:

localParser.setFeature("http://xml.org/sax/features/external-general-entities", false);

Note: the bpmn file is correctly instantiated in other version of the software that also uses drools with the same configurations.

I've been searching for similar issues without any luck.
Any help is appreciated.

agrim khanna

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Jul 14, 2017, 6:14:15 AM7/14/17

to Drools Usage

Hey,

Sorry for answering on such an old thread.

I think there is some issue with the order of placements of jars, due to which there is some mismatch of version of class being called.

I too faced the same issue, solved it by hit and trial moving the jars which I had in my project.