JDOM解析XML实例

import java.io.FileOutputStream;
import java.util.List;

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

public class TestJDomSax {

 /*<?xml version="1.0" encoding="UTF-8"?>
 <books>
  <book email="[e-mail]">
   <name>li</name>
   <price>63.4</price>
  </book>
 </books>*/
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  String filePath="lib.xml";
  try {
   SAXBuilder sax=new SAXBuilder(); // 创建一个sa
   Document doc=sax.build(filePath);  //得到Document对应的XML
   Element el=doc.getRootElement(); //得到根节点，对应books
   List<Element> list=el.getChildren("book");  //得到book节点集
   for(Element book:list){
    //取属性，并修改
    String email=book.getAttributeValue("email");//获取属性内容
    System.out.println(email);
    book.setAttribute("email","[e-mail]");
    //取节点，并修改
    String name=book.getChildTextTrim("name"); //获取节点内容
    System.out.println(name);
    Element ele=book.getChild("name");
    ele.setText("yuan");
    //取节点，并修改
    String price=book.getChildTextTrim("price"); //获取节点内容
    System.out.println(price);
    Element eleprice=book.getChild("price");
    eleprice.setText("999");
   }
   XMLOutputter out=new XMLOutputter();
   out.output(doc,new FileOutputStream(filePath));
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}