createxml.java

XML课件非常好的东西 如果你不了解XML看看非常有用

import java.io.*;
import org.w3c.dom.*;
import org.w3c.dom.Node;
import org.xml.sax.*;
import javax.xml.parsers.*;
public class CreateXML
{
  public void create(Document doc,String id,String name,String price)
  {
    Element root = doc.createElement("Catalog");
    Element eProd = doc.createElement("products");
    Element eId = doc.createElement("prod_id");
    Element eName = doc.createElement("prod_name");
    Element ePrice = doc.createElement("price");
    Text tId = doc.createTextNode(id);
    Text tName = doc.createTextNode(name);
    Text tPrice = doc.createTextNode(price);
    
    eProd.appendChild(eId).appendChild(tId);
    eProd.appendChild(eName).appendChild(tName);
    eProd.appendChild(ePrice).appendChild(tPrice);
    doc.appendChild(root).appendChild(eProd);
  }
  public void printDOC(Document doc)
  {
    NodeList nl = doc.getElementsByTagName("*");
    Element e;
    int len;
    len = nl.getLength();
    for (int j=0;j < len;j++)
    {
      e = (Element)nl.item(j);
      System.out.println(e.getTagName()+":"+e.getFirstChild().getNodeValue());
    }
  }
  static public void main(String[] argv)
  {
    try
    {
      if (argv.length != 3)
      {
        System.err.println("格式: java CreateXML 产品编号 名称 价格");
        System.exit(1);
      }
      DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
      DocumentBuilder domparser = dbfactory.newDocumentBuilder();
      Document doc = domparser.newDocument();        
      CreateXML cx = new CreateXML();
      cx.create(doc,argv[0],argv[1],argv[2]);
      cx.printDOC(doc);
    }
    catch (ParserConfigurationException p)
    {
      System.out.println(p.toString());
    }
  }
}