The JAX-RS engine of Web resources supports a servlet-based mechanism laid down in the JAX-RS specifications. Accordingly, as and when required, the exceptions that are thrown to the JAX-RS engine are also thrown to the J2EE server to which a Web application (WAR files) that includes a Web resource is deployed.

If an error occurs during the operation of a Web resource, check the log files of the JAX-RS functionality and the J2EE server.