Add null check for responseRef

Author: wushengyeyouya

dss-appconn/appconns/dss-sparketl-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/sparketl/SparkEtlAppConn.java

@@ -9,8 +9,6 @@
 
 public class SparkEtlAppConn extends AbstractAppConn implements OnlyDevelopmentAppConn {
 
-    public static final String SPARKETL_APPCONN_NAME = CommonVars.apply("wds.dss.appconn.sparketl.name", "sparketl").getValue();
-
     private SparkEtlDevelopmentStandard developmentStandard;
 
     @Override
@@ -23,7 +21,4 @@ public DevelopmentIntegrationStandard getOrCreateDevelopmentStandard() {
         return developmentStandard;
     }
 
-
-
-
 }

dss-standard/development-standard/development-process-standard/src/main/java/com/webank/wedatasphere/dss/standard/app/development/utils/DevelopmentOperationUtils.java

@@ -91,7 +91,10 @@ public static <K extends DevelopmentRequestRef, V extends ResponseRef> V tryDeve
             String error = String.format("%s failed. Caused by: %s.", errorMsg, ExceptionUtils.getRootCauseMessage(e));
             throw new ExternalOperationFailedException(50010, error, e);
         }
-        if(responseRef.isFailed()) {
+        if(responseRef == null) {
+            LOGGER.error("{} failed. Caused by: empty responseRef returned by AppConn.", errorMsg);
+            throw new ExternalOperationFailedException(61123, errorMsg + " failed. Caused by: empty responseRef returned by AppConn.");
+        } else if(responseRef.isFailed()) {
             LOGGER.error("{} failed. Caused by: {}.", errorMsg, responseRef.getErrorMsg());
             DSSExceptionUtils.dealWarnException(61123,
                     String.format("%s failed. Caused by: %s.", errorMsg, responseRef.getErrorMsg()),