java 读取 xml 实例

<?xml version="1.0" encoding="UTF-8"?>
<book>
  <图书 id="1" name="java">我是java</图书>
  <图书 id="2" name="c++">我是c++</图书>
  <图书 id="3" name="php">我是php</图书>
</book>

 

 

package ceshi;

import java.io.File;
import java.io.IOException;

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

import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class CeXml {
	
	private Document document;
	
	private Node node,nodes;
	
	public CeXml(String url) throws ParserConfigurationException, SAXException, IOException{
		DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
		DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
		document = documentBuilder.parse(new File(url));
	}
	/*
	 * 读取单个节点
	 */
	public void book1(){
		//获取第一个节点
		node = document.getElementsByTagName("图书").item(0);
		System.out.println("输出节点文本值：" + node.getTextContent());
		//获取节点属性的id
		nodes = node.getAttributes().getNamedItem("id");
		System.out.println("输出属性值：" + nodes.getTextContent());
	}
	/*
	 * 读取多个节点
	 */
	public void book2(){
		NodeList nodelist = document.getElementsByTagName("图书");
		for(int i=0;i<nodelist.getLength();i++){
			node = nodelist.item(i);
			NamedNodeMap nodemap = node.getAttributes();
			System.out.println("节点文本值：" + node.getTextContent());
			for(int k=0;k<nodemap.getLength();k++){
				nodes = nodemap.item(k);
				System.out.println("属性："+nodes.getNodeName()+"=" + nodes.getTextContent());
			}
		}
	}
}

 

 

package ceshi;

import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;

import org.xml.sax.SAXException;

public class Ce1 {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws SAXException 
	 * @throws ParserConfigurationException 
	 */
	public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
		// TODO 自动生成方法存根
		CeXml cexml = new CeXml("src/text.xml");
		cexml.book1();
		cexml.book2();
	}

}

 

评论

1 楼 钢炮准备 2010-07-30  

为什么不标识是以那种形式读取～～～