dom4jhandertest.java

孙鑫JAVA从入门到精通配套练习程序。所有程序都实际运行过

//使用事件处理模型
import java.io.File;
import org.dom4j.*;
import org.dom4j.io.*;


public class Dom4jHanderTest
{
	public static void main(String[] args)
	{
		SAXReader saxReader = new SAXReader();
		//对student元素添加事件处理
		saxReader.addHandler("/students/student",new StudentHandler());
		try
		{
			saxReader.read(new File("students.xml"));
		}
		catch (DocumentException e)
		{
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}

	}
	//student元素事件处理类
	private static class StudentHandler implements ElementHandler
	{
		//解析到元素开始标签时执行该代码
		public void onStart(ElementPath path)
		{
			Element elt=path.getCurrent();
			System.out.println("Found: "+elt.attributeValue("sn"));
			path.addHandler("name",new NameHandler());
			
			
		}
		//解析到元素结束标签时执行该代码
		public void onEnd(ElementPath path)
		{
			path.removeHandler("name");
		}
	}
	//name元素事件处理类
	private static class NameHandler implements ElementHandler
	{
		public void onStart(ElementPath path)
		{
			System.out.println(path.getPath());
			
		}
		
		public void onEnd(ElementPath path)
		{
			Element elt = path.getCurrent();
			System.out.println(elt.getName()+": "+elt.getText());
		}
	}
}