Unable to locate jaxb.properties for package external.xmlParser

[Yogesh Gandhi]

I am using JAXB to convert from Java Object to XML.

I have put the following values in the classpath

D:\HDFCPSL\WEB\src\external\xmlParser;
D:\HDFCPSL\WEB\src\external\xmlParser\bgm.ser;
D:\HDFCPSL\WEB\src\external\xmlParser\jaxb.properties

The code snippet I am using is

        JAXBContext context = JAXBContext.newInstance("external.xmlParser:external.xmlParser.impl:external.xmlParser.impl.runtime");
        MarshallerImpl marshaller = (external.xmlParser.impl.runtime.MarshallerImpl)context.createMarshaller();
        marshaller.marshal(myobj, new FileWriter(".\\src\\RequestGenerated.xml")); 

It is giving me an exception on Line 1

The exception is as follows :

11/12/14 13:25:27 javax.xml.bind.JAXBException: Unable to locate jaxb.properties for package external.xmlParser
11/12/14 13:25:27 at javax.xml.bind.JAXBException.<init>(JAXBException.java:47)
11/12/14 13:25:27 at javax.xml.bind.ContextFinder.searchcontextPath(ContextFinder.java:205)
11/12/14 13:25:27 at javax.xml.bind.ContextFinder.find(ContextFinder.java:149)
11/12/14 13:25:27 at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:281)
11/12/14 13:25:27 at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:238)
11/12/14 13:25:27 at external.LoanDetailReaderProcess.generateXML(LoanDetailReaderProcess.java:249)
11/12/14 13:25:27 at external.LoanDetailReaderProcess.run(LoanDetailReaderProcess.java:126)
11/12/14 13:25:27 at java.lang.Thread.run(Thread.java:534)

Does anyone has a clue? How can I fix this...

Hoping a fast response

Thanks for reading.

[Yogesh Gandhi]

Got the soution to my problem...Actually it was required to give the classLoader as the second argument.
Use the overloaded method of newInstance.

Something of this sort

        // Jaxb.properties and bgm.ser should reside in external.xmlParser folder.
        // Do not forget to give the class Loader.
        JAXBContext context = 
        JAXBContext.newInstance("external.xmlParser", 
        this.getClass().getClassLoader());

Source of the solution : http://www.jguru.com/forums/view.jsp?EID=1276852

[Yogesh Gandhi]

This solution worked for the above problem.

But in the same file I need to convert another object to XML

But this solution doesn't works there.

Though the jaxb.properties and bgm.ser file are there in the folder that is specified as the first argument of JAXBContext.newInstance

Still it is not working.
Any body has any clue?

I mean, what are the points one needs to take care, while using JAXBContext.newInstance

What I got to know is that


The FAQ on jaxb.properties not found recommends using

this.getClass().getClassLoader()

[Yogesh Gandhi]

Yogesh Gandhi wrote:This solution worked for the above problem.

But in the same file I need to convert another object to XML

But this solution doesn't works there.

Though the jaxb.properties and bgm.ser file are there in the folder that is specified as the first argument of JAXBContext.newInstance

Still it is not working.
Any body has any clue?

I mean, what are the points one needs to take care, while using JAXBContext.newInstance

What I got to know is that


The FAQ on jaxb.properties not found recommends using

this.getClass().getClassLoader()

Huh !!! It was a mistake on my part, but the error message is also mis-leading.

Actually I generated java classes, and added those java files to my project.
And I was trying to run it..

And it was failing on line

JAXBContext context =
JAXBContext.newInstance("external.rtgs.inquiryXml", RtgsUtil.class.getClassLoader());

However, it should have given a NoClassDefFoundError, but no......it says, Unable to locate jaxb.properties

I am glad, i was able to find the root cause.....After compiling all the classes it worked !!!