个回答

• 深度潜伏

  2018-01-04 14:46:37

  那个book.setAttribute("id", ""+i+1+"");你把i+1括号括起来就可以了！

  1

• 深度潜伏

  2018-01-04 14:44:48

  /**

  * 生成xml文件

  */

  public void creatXml(){

  DocumentBuilder db =getDocumentBuilder();

  Document document = db.newDocument();

  document.setXmlStandalone(true);

  //创建根节点

  Element bookstore = document.createElement("bookstore");

  for(int i = 0; i < 2; i++){

  //创建book子节点

  Element book = document.createElement("book");

  //创建name子节点

  Element name = document.createElement("name");

  //将name节点添加为book的子节点

  book.appendChild(name);

  //向name种添加文本属性

  name.setTextContent("小王子");

  //向子节点添加属性

  book.setAttribute("id", ""+i+1+"");

  //向根节点中添加book子节点

  bookstore.appendChild(book);

  }

  //将根节点加入到dom树种

  document.appendChild(bookstore);

  //创建TransformerFactory对象

  TransformerFactory tff = TransformerFactory.newInstance();

  try {//创建Transformer对象

  Transformer  tf =tff.newTransformer();

  tf.setOutputProperty(OutputKeys.INDENT, "yes");

  tf.transform(new DOMSource(document), new StreamResult("books1.xml")); 

  } catch (TransformerConfigurationException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }catch (TransformerException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  }

  
  

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