Catch ServiceAuthException, and return HTTP 401 Unauthorized.

Refs: #7593

@@ -75,6 +75,7 @@ import org.ofbiz.entity.condition.EntityCondition;
 import org.ofbiz.service.DispatchContext;
 import org.ofbiz.service.LocalDispatcher;
 import org.ofbiz.service.ModelService;
+import org.ofbiz.service.ServiceAuthException;
 import org.ofbiz.service.ServiceContainer;
 
 import org.apache.commons.csv.CSVFormat;
@@ -247,6 +248,11 @@ public class DirectControlServlet extends HttpServlet {
                 processRequest();
             } catch (IOException e) {
                 throw e;
+            } catch (ServiceAuthException e) {
+                e.printStackTrace();
+                Debug.logError(e, "ServiceAuthException", module);
+                response.setStatus(401);
+                setResponseNoCache();
             } catch (Exception e) {
                 e.printStackTrace();
                 throw (IOException) new IOException(e.getMessage()).initCause(e);