JAVA创建、读写XML文档（应用JDOM包）

来源：互联网发布：数据挖掘王灿视频编辑：程序博客网时间：2024/05/17 07:06

import java.io.*;
import java.util.*;

import java.io.IOException;

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

1、创建XML文件并写内容进去

String path = System.getProperty("user.dir");
System.out.println(path);

Element root = new Element("list");
Document Doc = new Document(root);

   for (int i = 0; i < 5; i++) {
    Element elements = new Element("user");
    elements.setAttribute("id", "" + i);
    elements.addContent(new Element("name").setText("xuehui"));
    elements.addContent(new Element("age").setText("28"));
    elements.addContent(new Element("sex").setText("Male"));

root.addContent(elements);
}

   XMLOutputter XMLOut = new XMLOutputter();
   org.jdom.output.Format format = org.jdom.output.Format.getCompactFormat();
   format.setEncoding("gb2312");
   format.setIndent("/t");

   XMLOut.setFormat(format);
   FileOutputStream w = new FileOutputStream("c://user.xml");
   XMLOut.output(Doc, w);
   w.close();

2、读取并修改XML文档的内容

File file = new File("c://user.xml");
   org.jdom.input.SAXBuilder builder = new org.jdom.input.SAXBuilder();
   Document doc = builder.build(file);
   //Document doc = builder.build("c://user.xml");
   Element root1 = doc.getRootElement();
   List<Element> elements = root1.getChildren();
   for(Element e : elements)
   {
    List<Element> eList = e.getChildren();
    for(Iterator it = eList.iterator(); it.hasNext();)
    {
     Element ce = (Element)it.next();
     String tmp = ce.getName();
     System.out.print(tmp + " ");
     if(tmp.equals("name"))
      ce.setText("zhaoyanjieda");
    }
    System.out.println();
   }

   XMLOutputter fmt = new XMLOutputter();
   org.jdom.output.Format f = org.jdom.output.Format.getPrettyFormat();
   fmt.setFormat(f);
   FileOutputStream u = new FileOutputStream("c:/user.xml");
   fmt.output(doc, u);