File file = new File(“g:/123.xml”);
try {
SAXTransformerFactory stf = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
TransformerHandler handler = stf.newTransformerHandler();
Transformer tf = handler.getTransformer();
tf.setOutputProperty(OutputKeys.INDENT, "yes");// 标签自动换行
tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");// 编码格式
StreamResult result = new StreamResult(file);// 创建Result对象
handler.setResult(result);// 关联
handler.startDocument();
handler.startElement("", "", "tb_students", null);// 根节点标签
.
.
.
handler.endElement("", "", "tb_students");// 结束根节点标签
handler.endDocument();