Pull request #6305: REPORT-60253 安装大数据集导出插件后，模板从本地切换到远程，再切换到本地，触发保存模板会弹窗 保存失败，有npe报错

Merge in DESIGN/design from ~HADES/design:bugfix/10.0 to bugfix/10.0

* commit '793caec8900b40ee63f4c9c597273d2c3b050090':
  REPORT-60253 安装大数据集导出插件后，模板从本地切换到远程，再切换到本地，触发保存模板会弹窗 保存失败，有npe报错

designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java

@@ -381,8 +381,10 @@ public abstract class JTemplate<T extends BaseBook, U extends BaseUndoState<?>>
      */
     @Deprecated
     public void refreshResource() {
+        if (JTemplateFactory.isAvailable()) {
             refreshResource(this.editingFILE);
         }
+    }
 
     public void refreshResource(FILE file) {
 

designer-base/src/main/java/com/fr/design/mainframe/JTemplateFactory.java

@@ -93,4 +93,7 @@ public final class JTemplateFactory {
             ALL_APP.remove(app);
         }
     }
-}
+
+    public static boolean isAvailable() {
+        return !ALL_APP.isEmpty();
+    }}