JAVA 读取XML文件

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.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class b
{
    public static void main(String[] args)
    {
        try
        {
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = factory.newDocumentBuilder();
            Document doc = db.parse(new File("d://a.xml"));
            Element elmtInfo = doc.getDocumentElement();
            NodeList nodes = elmtInfo.getChildNodes();
            int m = 1;
            for (int i = 0; i < nodes.getLength(); i++)
            {
                Node result = nodes.item(i);
                if (result.getNodeType() == Node.ELEMENT_NODE && result.getNodeName().equals("txtbook"))
                {
                    NodeList ns = result.getChildNodes();

                    for (int j = 0; j < ns.getLength(); j++)
                    {
                        Node record = ns.item(j);

                        if (record.getNodeType() == Node.ELEMENT_NODE && record.getNodeName().equals("name"))
                        {
                            System.out.println(m + ": " + record.getTextContent());
                            m++;
                        }
                    }
                }
            }
        }
        catch (ParserConfigurationException e)
        {
            e.printStackTrace();
        }
        catch (SAXException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
}