java - Xml如何设置UTF-16编码格式？

Question

我需要将 xml 创建为要传递给服务器的字符串。我已经设法将数据转换为 xml，但编码格式默认设置为 utf-8。我需要的是我想将它设置为 utf-16 格式。但我还没有设置它的任何想法。

  private void XmlCreation(int size,List<DataItem> item) throws ParserConfigurationException, TransformerException
 {
  DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
  DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
  Document document = documentBuilder.newDocument();
  Element rootElement = document.createElement("ArrayOfDataItem");
  document.appendChild(rootElement);
  for (DataItem in: item)
  { 
  Element subroot = document.createElement("DataItem"); 
  rootElement.appendChild(subroot);
  Element em = document.createElement(in.getKey());
  em.appendChild(document.createTextNode(in.getValue()));
  subroot.appendChild(em); 
  }

  TransformerFactory transformerFactory = TransformerFactory.newInstance();
  Transformer transformer = transformerFactory.newTransformer();
  java.io.StringWriter sw = new java.io.StringWriter();
  DOMSource source = new DOMSource(document);

  StreamResult result =  new StreamResult(System.out);
  transformer.transform(source, result);

  String xml = sw.toString();
  System.out.println(xml);
  }
}

谢谢大家

Answer 1

我还没有测试过，但这应该可以解决问题:

transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-16");