学习访问XML2:写入XML数据

读取一个doc setAttribute方法设置属性

removeChild方法删除一个子节点

Element newChild = doc.createElement("class");

newChild.setAttribute("name", "c4");

root.appendChild(newChild);

组合用来创建节点

DOMSource domSource = new DOMSource(doc);

TransformerFactory transFactory = TransformerFactory.newInstance();

Transformer transFormer = transFactory.newTransformer();

File file = new File("src/dom-modify.xml");

if (file.exists()) {

file.delete();

}

file.createNewFile();

FileOutputStream out = new FileOutputStream(file);

StreamResult xmlResult = new StreamResult(out);

transFormer.transform(domSource, xmlResult);

用来创建新的XML文件