sevelt

package com.xml.dom;

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class DomTest {

 
 public static void main(String[] args) throws Exception{
  DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();//創建一個新的工廠實例factory
  DocumentBuilder builder=factory.newDocumentBuilder();  //得到一個dom解析器
  Document doc=builder.parse(new File("src/shuiguo.xml"));   //得到dom對象
  
  childNodesLength(doc);
  Node shuiguo=doc.getElementsByTagName("水果").item(0);
  listNodes(shuiguo);

 }

 public static void listNodes(Node shuiguo) {
  NodeList nodelist=shuiguo.getChildNodes();
  for(int i=0;i<nodelist.getLength();i++){
   System.out.println("節點的名稱"+nodelist.item(i).getNodeName()+"    節點的類型:"+nodelist.item(i).getNodeType()+"    節點的值:"+nodelist.item(i).getNodeValue());
  }
  
 }

 public static void childNodesLength(Document doc) {
  Node shuiguo=doc.getElementsByTagName("水果").item(0);
  NodeList nodelist=shuiguo.getChildNodes();
  int count=0;
  for(int i=0;i<nodelist.getLength();i++){
   if(nodelist.item(i).getNodeType()==Node.ELEMENT_NODE)
   count++;
  }
  System.out.println("水果中含有的元素節點的個數是："+count);
 }
}