Parse xml using JDom

import java.io.FileWriter;import org.jdom.Attribute;import org.jdom.Comment;import org.jdom.Document;import org.jdom.Element;import org.jdom.output.Format;import org.jdom.output.XMLOutputter;public class JDomTest1{public static void main(String[] args) throws Exception{Document document = new Document();Element root = new Element("root");document.addContent(root);Comment comment = new Comment("This is my comments");root.addContent(comment);Element e = new Element("hello");e.setAttribute("sohu", "www.sohu.com");root.addContent(e);Element e2 = new Element("world");Attribute attr = new Attribute("test", "hehe");e2.setAttribute(attr);e.addContent(e2);e2.addContent(new Element("aaa").setAttribute("a", "b").setAttribute("x", "y").setAttribute("gg", "hh").setText("text content"));Format format = Format.getPrettyFormat();format.setIndent("    ");//format.setEncoding("gbk");XMLOutputter out = new XMLOutputter(format);out.output(document, new FileWriter("jdom.xml"));}}

import java.io.File;import java.io.FileOutputStream;import java.util.List;import org.jdom.Attribute;import org.jdom.Document;import org.jdom.Element;import org.jdom.input.SAXBuilder;import org.jdom.output.Format;import org.jdom.output.XMLOutputter;public class JDomTest2{public static void main(String[] args) throws Exception{SAXBuilder builder = new SAXBuilder();Document doc = builder.build(new File("jdom.xml"));Element element = doc.getRootElement();System.out.println(element.getName());Element hello = element.getChild("hello");System.out.println(hello.getText());List list = hello.getAttributes();for(int i = 0 ;i < list.size(); i++){Attribute attr = (Attribute)list.get(i);String attrName = attr.getName();String attrValue = attr.getValue();System.out.println(attrName + "=" + attrValue);}hello.removeChild("world");XMLOutputter out = new XMLOutputter(Format.getPrettyFormat().setIndent("    "));out.output(doc, new FileOutputStream("jdom2.xml"));}}