存在空指针异常的可能性，增加一个判断语句

designer-realize/src/main/java/com/fr/design/parameter/ParameterDefinitePane.java

@@ -425,7 +425,9 @@ public class ParameterDefinitePane extends JPanel implements ToolBarMenuDockPlus
         if (propertyChangeListener != null) {
             propertyChangeListener.propertyChange();
         }
-        workBook.setAutoHeightForCenterPane();
+        if (workBook != null) {
+            workBook.setAutoHeightForCenterPane();
+        }
     }
 
     /**
@@ -446,7 +448,9 @@ public class ParameterDefinitePane extends JPanel implements ToolBarMenuDockPlus
         if (propertyChangeListener != null) {
             propertyChangeListener.propertyChange();
         }
-        workBook.setAutoHeightForCenterPane();
+        if (workBook != null) {
+            workBook.setAutoHeightForCenterPane();
+        }
     }
 
     /**
@@ -469,7 +473,9 @@ public class ParameterDefinitePane extends JPanel implements ToolBarMenuDockPlus
         if (propertyChangeListener != null) {
             propertyChangeListener.propertyChange();
         }
-        workBook.setAutoHeightForCenterPane();
+        if (workBook != null) {
+            workBook.setAutoHeightForCenterPane();
+        }
     }
 
     /**