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13.8. Exception Handling

13.8.1. Create an Exception Mapper
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Summary

Exception mappers are custom, application provided components that catch thrown exceptions and write specific HTTP responses.

Example 13.2. Exception Mapper

An exception mapper is a class that is annotated with the @Provider annotation, and implements the ExceptionMapper interface.
An example exception mapper is shown below. 
@Provider
public class EJBExceptionMapper implements ExceptionMapper<javax.ejb.EJBException>
    {
    Response toResponse(EJBException exception) {
    return Response.status(500).build();
    }
}
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To register an exception mapper, list it in the web.xml file under the resteasy.providers context-param, or register it programmatically through the ResteasyProviderFactory class.
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