dom4j,读,写,解析,xml文件 示例代码

/*****************************************************///>dom4j 读写解析xml文件/*****************************************************/public class Test {mi.attributeIterator();//取出节点上所有的属性/** * 写xml */public static void writeDocument() {try {Document document = DocumentHelper.createDocument();// 这个方法非常好用他主要将一窜字符窜的xml解析称dom树// DocumentHelper.parseText("");Element root = document.addElement("config");root.addAttribute("attr1", "value");Element mi = root.addElement("mainIndex");mi.setAttributeValue("name", "value");// setText("zhangsan")=<name>zhangsan</name>mi.setText("xxxx");// <mainIndex name="value">xxxx</mainIndex>save(document, "c:/test.xml");} catch (Exception e) {e.printStackTrace();}}public static void updateDocument() {try {SAXReader sr = new SAXReader();Document document = sr.read(new File("c:\\test.xml"));// lstEle.selectNodes("str")可以是xpath也可以是节点的名字// document.asXML() 可以把当前的任意元素的xml字符窜输出// <?xml version="1.0" encoding="UTF-8"?>// <config attr1="value"><mainIndex name="value"/></config>Element root = document.getRootElement();Element el = (Element) root.selectSingleNode("/config/mainIndex");// el.attribute("name").setValue("aaaaaaa");// el.attribute("name").setData("xxxxx");el.attribute("name").setText("bbbbb");save(document, "c:/test.xml");System.out.println(document.asXML());} catch (Exception e) {e.printStackTrace();}}/** *  * @param document * @param savDir *            将文档输出到的dir */public static void save(Document document, String savDir) {try {FileOutputStream fos = new FileOutputStream(new File(savDir));XMLWriter xw = new XMLWriter(fos);xw.write(document);xw.flush();xw.close();} catch (Exception e) {e.printStackTrace();}}}