Thursday 18 February 2010

"javax.naming.Name is an interface, and JAXB can't handle interfaces" - Deployment Issues when using Eclipse to Deploy a JavaBean Web Service in to SAP Java AS

Hit an issue today when deploying an Enterprise JavaBen (EJB) web service today via Eclipse. I was exposing the SAP UWL through the UWL API - but it wouldn't deploy. I kept getting the following error in the deployment trace:
[com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
javax.naming.Name is an interface, and JAXB can't handle interfaces.]




Looking at all my @WebMethod annotations, there didn't seem to be any obvious problem:

@WebMethod(operationName="Test", exclude=false)
public int Test() throws UWLException, NamingException
{
IUser user = com.sap.security.api.UMFactory.getAuthenticator().getLoggedInUser();

I examined the Eclipse debug trace to about line 100, I found an issue - that there was a problem with serialization:
Unable to generate serialization framework for web service UWLFacadeService

Turns out the deployment exception was really trying to tell me that "NamingException" is not serializable - and so cannot be surfaced through a Web Service. I changed my method to handle the NamingException errors internally (via try..catching them), and removed the throws statement on the Method. Without the requirement to serialize the exception, the deployment errors for my test EJB web service went away!


......

5 comments:

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It appears that there's a significant deployment issue when utilizing Eclipse to deploy a JavaBean Web Service into SAP Java AS, specifically related to the use of javax.naming.Name interface. The challenge seems to stem from JAXB's inability to handle interfaces, causing a roadblock in the deployment process. This limitation might require a workaround or alternative approach to ensure successful deployment. This issue highlights the importance of understanding the compatibility and constraints of different technologies in a Java environment, particularly when dealing with interfaces in conjunction with JAXB during the deployment of web services in SAP Java AS through Eclipse. Addressing this intricacy is crucial for a seamless integration and functioning of the JavaBean Web Service within the SAP Java AS environment. Most students are drawn to these types of articles and information, but they are unable to prepare for their exams, If you have been struggling with your exams and want assistance, students can do my online class - online class help and get higher grades on their examinations by providing them with the best available resources, including quality academic services.