REPORT-37289 处理下npe

designer-form/src/main/java/com/fr/design/parameter/ParameterPropertyPane.java

@@ -1,5 +1,6 @@
 package com.fr.design.parameter;
 
+import com.fr.base.Parameter;
 import com.fr.design.constants.UIConstants;
 import com.fr.design.designer.creator.XCreator;
 import com.fr.design.designer.creator.XWParameterLayout;
@@ -124,7 +125,8 @@ public class ParameterPropertyPane extends JPanel{
             hideInJForm = jt instanceof JForm &&
 					!(creator instanceof XWParameterLayout || creator.getParent() instanceof XWParameterLayout);
         } catch (NullPointerException ex) {
-			hideInJForm = toolbarPane.updateBean().length <= 0;
+        	Parameter[] parameters = toolbarPane.updateBean();
+			hideInJForm = parameters == null || parameters.length <= 0;
         }
         if (isVisible && toolbarPane.hasSelectedLabelItem() && !hideInJForm) {
             addParaPane.setVisible(true);