创建xml文件

public static void testDelete() {
    File file = new File("文件名");
//如果文件夹不存在则创建    
if(file.exists())    
{    
     file.delete();    
}
Document doc = DocumentHelper.createDocument();
Element root = doc.addElement("NeConfig");

Element elStu1 = root.addElement("Ne");
Element dn = elStu1.addElement("dn");
Element ModuleType = elStu1.addElement("ModuleType");
Element ModuleDn = elStu1.addElement("ModuleDn");
Element status = elStu1.addElement("status");
dn.setText("22");
ModuleType.setText("20");
status.setText("true");
ModuleDn.setText("ok");

// OutputFormat(空位,是否换行,字符编码);
OutputFormat outfm = new OutputFormat("    ", true, "UTF-8");
try {
// XMLWriter xmlw = new XMLWriter(outfm);
// 输出至文件
XMLWriter xmlw = new XMLWriter(new FileWriter("文件名"),
outfm);
xmlw.write(doc);
xmlw.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}