Dom解析xml小程序

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package WildCat.Xml.Dom; 
 
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.Attr; 
import org.w3c.dom.Comment; 
import org.w3c.dom.Document; 
import org.w3c.dom.Element; 
import org.w3c.dom.NamedNodeMap; 
import org.w3c.dom.Node; 
import org.w3c.dom.NodeList; 
import org.xml.sax.SAXException; 
 
public class testXml1_3 { 
 
    /** 
     * @param args 
     * @throws ParserConfigurationException  
     * @throws IOException  
     * @throws SAXException  
     */ 
    public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException { 
        //step1.获得工厂 
        DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance(); 
        //setp2.获得解析器 
        DocumentBuilder db=dbf.newDocumentBuilder(); 
        //step3获得Document对象(根节点) 
        Document doc=db.parse(new File("test.xml")); 
        //获得根元素节点 
        Element root=doc.getDocumentElement(); 
         
        parseElement(root); 
    } 
     
    public static void parseElement(Element ele) 
    { 
        //get the tag'sName 
        String tagName=ele.getNodeName(); 
        //获得所有的孩子 
        NodeList children=ele.getChildNodes(); 
        System.out.print("<"+tagName); 
        NamedNodeMap map=ele.getAttributes(); 
        if (null!=map) 
        { 
            for (int j=0;j<map.getLength();j++) 
            { 
                //向下类型转换 
                Attr attr=(Attr)map.item(j); 
                //获得属性名 
                String attrName=attr.getNodeName(); 
                //获得属性值 
                String attrValue=attr.getNodeValue(); 
                System.out.print(" "+attrName+"=\""+attrValue+"\""); 
                 
            } 
             
        } 
        System.out.print(">"); 
         
        for (int i=0;i<children.getLength();i++) 
        { 
            Node node=children.item(i); 
            //get the node's type 
            short nodeType=node.getNodeType(); 
            if (Node.ELEMENT_NODE==nodeType) 
            { 
                //go on 递归 
                parseElement((Element)node); 
            } 
            else if (Node.TEXT_NODE==nodeType) 
            { 
                //if it is text  
                System.out.print(node.getNodeValue()); 
                 
            } 
            else if (Node.COMMENT_NODE==nodeType) 
            { 
                System.out.print("<!--"); 
                Comment comment=(Comment)node; 
                //获得注释的内容 
                String data=comment.getData(); 
                System.out.println(data+"-->"); 
            } 
             
        } 
        System.out.print("</"+tagName+">"); 
         
     
         
    } 
     
     
 
} 

作者：superlele123