Jdom 生成和解析XML文件

//生成XML文件

package com.abin.xml.test;

import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;

public class CreateXML1 {

 public static String doXML()throws FileNotFoundException,IOException{
  Element root =new Element("school");
  Document doc=new Document(root);
  for(int i=0;i<5;i++){
   Element element=new Element("user");
   element.setAttribute("id", ""+i);

   element.addContent(new Element("username").setText("kobe"));
   element.addContent(new Element("age").setText("12"));
   element.addContent(new Element("sex").setText("female"));

   root.addContent(element);
  }
  ByteArrayOutputStream byteRsp = new ByteArrayOutputStream();
  XMLOutputter xmlOut=new XMLOutputter();

  try {
   xmlOut.output(doc, byteRsp);
   xmlOut.output(doc, new FileOutputStream("test2.xml"));
  } catch (Exception e) {
   // TODO: handle exception
   e.printStackTrace();
  }
  String result=byteRsp.toString();
  return result;
 }
 public static void main(String[] args)throws IOException{
  String result=new CreateXML1().doXML();
  System.out.println("result="+result);
 }

}





//解析XML文件

package com.abin.xml.test;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.jdom.Attribute;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;

/**
 * jdom解析xml文件
 * 
 * @author ly *
 */
public class JDomXML {

 public JDomXML() {
 }

 /**
  * 解析xml文件
  * 
  * @param xmlFile
  */
 public void parseXml(File xmlFile) {
  SAXBuilder sax = new SAXBuilder();// 在内存中建立一个sax文档模型
  try {
   Document xmlDom = sax.build(xmlFile);// 创建文档
   // 获得文件的根元素
   Element root = xmlDom.getRootElement();
   System.out.println("根元素是:" + root.getName());

   // 获得根元素的子节点
   List childList = root.getChildren();
   Iterator listIt = childList.iterator();
   while (listIt.hasNext()) {
    Element element = (Element) listIt.next();
    System.out.println("孩子结点是:" + element.getName());
   }

   // 获得第一个孩子结点
   Element firstChild = (Element) childList.get(0);
   // 获得孩子结点的属性
   List attrList = firstChild.getAttributes();
   Iterator attrIt = attrList.iterator();
   while (attrIt.hasNext()) {
    Attribute attr = (Attribute) attrIt.next();
    System.out.println("第一个元素的属性是:" + attr.getName());
    // 获得属性的值
    System.out.println("属性的值是:" + attr.getValue());
    // 获得属性的类型
    System.out.println("属性的类型是:" + attr.getAttributeType());
   }

   List sonList = firstChild.getChildren();
   Iterator sonIt = sonList.iterator();
   while (sonIt.hasNext()) {
    Element temp = (Element) sonIt.next();
    System.out.println("属性" + temp.getName() + "的值是:"
      + temp.getValue());
   }

  } catch (JDOMException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
 }

 public static void main(String[] args) {
  JDomXML test = new JDomXML();
  test.parseXml(new File("test2.xml"));
 }
}