Issue with JBoss and Camel

If you are like me and are trying to run Apache Camel on JBoss 7.1.1, you may face an issue related to this exception:

Error description: You receive a stacktrace with an inner exception
on the form below.
Caused by: java.lang.NullPointerException
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.checkOverrideProperties(ClassBeanInfoImpl.java:205)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:186)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:509)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:528)
at com.sun.xml.bind.v2.runtime.property.ArrayReferenceNodeProperty.<init>(ArrayReferenceNodeProperty.java:87)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[ ... and a looong intermediary stack trace removed ... The stacktrace
ends with: ]
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:128)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:277)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
at org.apache.camel.spring.handler.CamelNamespaceHandler.createJaxbContext

This happens because there's a bug on JAXB 2.2.4, the version used by default on JBoss 7.1.1.
I honestly don't know if this also happens to any other JBoss 7 versions, but this is a bug only with JAXB 2.2.4, so if the version you have has this JAXB version, you also have this problem.

To fix this, follow these instructions:

1. Download the new version of JAXB (from Maven Repo)
1. jaxb-impl-2.2.5-2
2. jaxb-xjc-2.2.5-2
2. Put these files on this JBoss folder:
1. jboss-as-7.1.1.Final/modules/com/sun/xml/bind/main
3. Open the file module.xml
1. replace the old version (2.2.4) with the new one (2.2.5-2)
4. Done!

Now get back to work!

PS: part of this solution (updating JAXB) is thanks to this thread.