dom4jnamespace.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Dom4j处理名称空间
import java.io.File;
import java.util.*;

import org.dom4j.*;
import org.dom4j.io.SAXReader;



public class Dom4jNameSpace
{
	public static void main(String[] args)
	{
		SAXReader saxReader = new SAXReader();
		try
		{
			Document doc = saxReader.read(new File("books.xml"));
			doc.accept(new VisitorPrinter());
		}
		catch (DocumentException e)
		{
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}
		
	}
	
	private static class VisitorPrinter extends VisitorSupport
	{
		public void visit(Attribute attr)
		{
			String attrNSUri = attr.getNamespaceURI();
			//打印该元素名称空间相关信息
			if(!attrNSUri.equals(""))
			{
				System.out.println("Attribute Name "+attr.getQualifiedName());
				System.out.println("Local Name "+attr.getName());
				System.out.println("NameSpace Prefix "+attr.getNamespacePrefix());
				System.out.println("NameSpace URI "+attr.getNamespaceURI());
				System.out.println();
			}
		}

		public void visit(Element elt)
		{
			String eltNSUri = elt.getNamespaceURI();
			//打印该元素名称空间相关信息
			if(!eltNSUri.equals(""))
			{
				System.out.println("Element Name "+elt.getQualifiedName());
				System.out.println("Local Name "+elt.getName());
				System.out.println("NameSpace Prefix "+elt.getNamespacePrefix());
				System.out.println("NameSpace URI "+elt.getNamespaceURI());
				System.out.println();
			}
			//打印该元素的附带名称空间信息
			List l = elt.additionalNamespaces();
			for(Iterator iter=l.iterator();iter.hasNext();)
			{
				Namespace ns=(Namespace)iter.next();
				System.out.println("------namespace declaration------");
				System.out.println("Prefix "+ns.getPrefix());
				System.out.println("URI "+ns.getURI());
				System.out.println();
			}
		}
	}
}