//创建一个 SAXTransformerFactory 类对象
SAXTransformerFactory tff = (SAXTransformerFactory)SAXTransformerFactory.newInstance();

//通过 SAXTransformerFactory 对象创建一个 TransformerHandler 对象
TransformerHandler handler = tff.newTransformerHandler();

//设置生成的 XML 文件编码格式
tr.setOutputProperty(OutputKeys.ENCODING, "utf-8");
//设置生成的 XML 文件自动换行
tr.setOutputProperty(OutputKeys.INDENT, "yes");

//如果不存在，就创建一个新的 XML 文件
File file = new File("newSchool.xml");
if (!file.exists()) {file.createNewFile();
}

//创建一个Result 对象,并且使其与 TransformerHandler 对象关联
Result result = new StreamResult(new FileOutputStream(file));
handler.setResult(result);

//打开 document
handler.startDocument();

AttributesImpl atts = new AttributesImpl();
//根节点开始标签
handler.startElement("", "", "School", atts);

//设置属性和属性值
atts.addAttribute("", "", "id", "", "1");
//子节点开始标签
handler.startElement("", "", "student", atts);

atts.clear();  //清空子节点设的值
//字节点下name节点开始标签
handler.startElement("", "", "name", atts);
String name="小王";
handler.characters(name.toCharArray(), 0, name.length());
//字节点下name节点结束标签
handler.endElement("", "", "name");

//子节点结束标签
handler.endElement("", "", "student");//根节点结束标签
handler.endElement("", "", "School");//关闭 document
handler.endDocument();

<?xml version="1.0" encoding="utf-8"?><School>
<student id="1">
<name>小王</name>
</student>
</School>

import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;public class CreateXMLBySAX {public static void main(String[] args) {//创建一个 SAXTransformerFactory 类对象SAXTransformerFactory tff = (SAXTransformerFactory)SAXTransformerFactory.newInstance();try {//通过 SAXTransformerFactory 对象创建一个 TransformerHandler 对象TransformerHandler handler = tff.newTransformerHandler();//通过 TransformerHandler 对象创建一个 Transformer 对象Transformer tr = handler.getTransformer();//设置生成的 XML 文件编码格式tr.setOutputProperty(OutputKeys.ENCODING, "utf-8");//设置生成的 XML 文件自动换行tr.setOutputProperty(OutputKeys.INDENT, "yes");//如果不存在，就创建一个新的 XML 文件File file = new File("newSchool.xml");if (!file.exists()) {file.createNewFile();}//创建一个Result 对象,并且使其与 TransformerHandler 对象关联Result result = new StreamResult(new FileOutputStream(file));handler.setResult(result);//利用 handler 对象进行 XML 文件内容的编写//打开 document
            handler.startDocument();//为了创建节点属性和属性值AttributesImpl atts = new AttributesImpl();//根节点开始标签handler.startElement("", "", "School", atts);//atts.clear();  //清空 atts 的值//设置属性和属性值atts.addAttribute("", "", "id", "", "1");//子节点开始标签handler.startElement("", "", "student", atts);atts.clear();  //清空子节点设的值//字节点下name节点开始标签handler.startElement("", "", "name", atts);String name="小王";handler.characters(name.toCharArray(), 0, name.length());//字节点下name节点结束标签handler.endElement("", "", "name");//子节点结束标签handler.endElement("", "", "student");//根节点结束标签handler.endElement("", "", "School");//关闭 document
            handler.endDocument();} catch (TransformerConfigurationException e) {e.printStackTrace();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();}}
}