Question

I am writing a plugin for Jira which involves parsing of XML documents. I am using JAXB to do so (XML to pojos and vice versa)
So have a class which generates XML from pojos using JAXB. it looks like…

import javax.xml.bind.*;

Class Parser {
  public void m1() {
    ...
    // code which uses classes in javax.xml.bind.*
  }

  public static void main(String args[]){
   Parser p=new Parser();
   p.m1();

  } 
}

The mentioned packages will come with JDK distribution (rt.jar). so i haven’t relayed on anything else to run the class.

when i launch it from command line using ‘java’ it’s working properly. but, when i package
it as a jar and put it as plugin in Jira it’s failing with the following error

javax.xml.bind.JAXBException: Provider com.sun.xml.bind.v2.ContextFactory not found
 - with linked exception:
[java.lang.ClassNotFoundException: com.sun.xml.bind.v2.ContextFactory]
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:152)
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:299)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)

This is on the same machine. only difference i could see is unlike launching from command line, when i deployed it in Jira, it’s not calling the main() but m1() by instantiating.

I am wondering what is happening ! it’s on the same machine. i do not know how Jira launches the application (as i am launching from command line).

Answer 1

The com.sun.xml.bind package is part of the JAXB RI (http://jaxb.dev.java.net/), so you probably have that on your classpath somewhere.

Java6 has it’s own version of JAXB included, in the com.sun.xml.internal.bind package, so you don’t usually need the RI in Java6 .

The RI can made made to work with Java6 , but it’s uphill battle, and usually ends up with this sort of problem.