basically, if using Jaxb-api; jaxb-impl version 2.2.x, and camel version before 2.10 (not yet released), it might on-off/intermittent throwing NPE exception, while parsing camel-context xml.
The NPE is about com/sun/xml/bind/v2/runtime/ClassBeanInfoImpl.checkOverrideProperties()
I have encountered above exception, on off when deploying a web application, onto Jboss 7.1.1. Because default jaxb module in jboss 7, is
put the old versioned jaxb library into application library folder, seems solved the problem for now. I might need to exclude the jboss jaxb module in jboss-deployment-structure.xml if needed later.
https://community.jboss.org/message/739232 Interesting. It works now, I've just rolled back JAXB Version inside JBOSS. If anyone has the same problem, the solution for JBOSS 7.1.1 FInal is: Go into $JBOSS_HOME/modules/com/sun/xml/bind/main delete all files (jaxb-impl-2.2.4.jar, jaxb-xjc-2.2.4.jar etc, 5 files) The simplest way is to take the same module, version 2.2, from JBOSS 7.0.1, it has jaxb 2.2, just copy all 5 files from jboss_7.0.1/modules/com/sun/xml/bind/main/* to jboss_7.1.1.Final/modules/com/sun/xml/bind/main/ I am using camel 2.9.2 again, no snapshot version (or 2.10) necessary. I've started and stopped it again at least 10 times, it's working. Now I understand, why I did not get such a trouble with jboss 7.0.1. it could be also helpful: http://java.net/jira/browse/JAXB-860 Pasted from <https://community.jboss.org/message/739232> =============================================================== Reading between the lines I think you have encountered an incompatibility between Apache Camel and JAXB 2.2 (which is part of the standard JEE6 spec and also incorporated into Java 7). It looks like the Camel folks are actively working on a fix for their 2.10.0 release. Pasted from <https://community.jboss.org/message/739232> ================================================================ https://issues.apache.org/jira/browse/CAMEL-4955 Due to a bug of JAXB RI included in JDK 7, (see http://java.net/jira/browse/JAXB-860) NPE raised while creating CamelContext in camel-spring. I't a show-stopper for everyone using camel-spring with JDK 7. related mailing list thread: http://mail-archives.apache.org/mod_mbox/camel-users/201108.mbox/%3CCAJ_S2Sn+Y692R48yrYBZoB66Pz1YPC6H-i=ZozBFPa=G54D78w@mail.gmail.com%3E Pasted from <https://issues.apache.org/jira/browse/CAMEL-4955>