将XML文档保存在另一个xml文件中

Question

怎么了？此代码不保存并且不显示错误

此代码：

1. 读取文件menuAdm.xml
2. 对待该文件

3. 将处理过的内容保存在另一个xml（menuAdm2.xml）

   中

   DocumentBuilder dBuilder = null;
   try {
       dBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
       Document doc = dBuilder.parse(new File("/seguranca/menuAdm.xml"));
   
   
       System.out.println("Root element :" + doc.getDocumentElement().getNodeName());
       Element root = doc.getDocumentElement();
   
       // do treatment of doc (menuAdm.xml)            
   
       // save into another file (menuAdm2.xml)
       TransformerFactory transformerFactory = TransformerFactory.newInstance();
       Transformer transformer = transformerFactory.newTransformer();
       DOMSource source = new DOMSource(doc);
       StreamResult result = new StreamResult(new File("/seguranca/menuAdm2.xml") );
       transformer.transform(source, result);
   
   } catch (Exception e) {
       System.out.println("Error to save file " + e.getMessage());
   }