如何使用jdom创建中文的xml文件？

package test;

import java.io.File;

public class DOMTest {
private String outFile = "c:\\abc\\people.xml";

public static void main(String[] args) {
new DOMTest();

}

public DOMTest() {
try {
File file = new File(outFile); 
if(!file.exists()){
file.createNewFile();
}

javax.xml.parsers.DocumentBuilder builder = javax.xml.parsers.DocumentBuilderFactory.newInstance()
.newDocumentBuilder();
org.w3c.dom.Document doc = builder.newDocument();
org.w3c.dom.Element root = doc.createElement("老师");
org.w3c.dom.Element wang = doc.createElement("苍");
org.w3c.dom.Element liu = doc.createElement("刘");

wang.appendChild(doc.createTextNode("我是苍老师"));
root.appendChild(wang);
root.appendChild(liu);
doc.appendChild(root);

javax.xml.transform.Transformer transformer = javax.xml.transform.TransformerFactory.newInstance()
.newTransformer();
transformer.setOutputProperty(javax.xml.transform.OutputKeys.ENCODING, "gb2312");
transformer.setOutputProperty(javax.xml.transform.OutputKeys.INDENT, "yes");
transformer.transform(new javax.xml.transform.dom.DOMSource(doc),
new javax.xml.transform.stream.StreamResult(outFile));
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
}