public Response getResponse() {
    return buildMessage(httpCode, params, getMessage());
  }
Simple exception that will return a json error payload if thrown
from a JAX web server.  We skip using WebApplicationException and
instead map our own so that Jersey doesn't log our exceptions as
error in the output log.  See SimpleExceptionMapper.
hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/SimpleWebException.java