轻松使用dom解析xml

轻松使用dom解析xml

xml文件

<? xml version="1.0" encoding="UTF-8" ?>
< data >
     < book  id ="1" >
         < name > Android应用开发详解 </ name >
         < author > json </ author >
         < price > 88 </ price >
         < pubinfo > 人民邮电出版社 </ pubinfo >
     </ book >
     < book  id ="2" >
         < name > Android权威指南 </ name >
         < author > tom </ author >
         < price > 79 </ price >
         < pubinfo > 人民教育出版社 </ pubinfo >
     </ book >
     < book  id ="3" >
         < name > Android开发案例大全 </ name >
         < author > mark </ author >
         < price > 68 </ price >
         < pubinfo > 电子工业出版社 </ pubinfo >
     </ book >
     < book  id ="4" >
         < name > Android从入门到精通 </ name >
         < author > jack </ author >
         < price > 68 </ price >
         < pubinfo > 电子工业出版社 </ pubinfo >
     </ book >
     < book  id ="5" >
         < name > Pro Spring </ name >
         < author > mark </ author >
         < price > 68 </ price >
         < pubinfo > 电子工业出版社 </ pubinfo >
     </ book >
</ data >

解析类

package  com.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.Document;
import  org.w3c.dom.Element;
import  org.w3c.dom.NodeList;
import  org.xml.sax.SAXException;

/**
 * <pre>
 * dom解析xml
 * <pre>
 *  @author  scott
 *
  */
public   class  DomXmlParser {

     public   static   void  main(String[] args) {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        File file = new  File( " D:\\workspace\\demo\\src\\books.xml " );
        DocumentBuilder documentBuilder = null ;
         try  {
            documentBuilder  =  factory.newDocumentBuilder();
        }  catch  (ParserConfigurationException e) {
            e.printStackTrace();
        }
        Document document = null ;
         try  {
            document = documentBuilder.parse(file);
        }  catch  (SAXException e) {
            e.printStackTrace();
        }  catch  (IOException e) {
            e.printStackTrace();
        }
        
        Element element = document.getDocumentElement();
        NodeList nodeList = element.getElementsByTagName( " book " );
         for  ( int  i  =   0 ; i  <  nodeList.getLength(); i ++ ) {
            Element book  =  (Element)nodeList.item(i);
            String id = book.getAttribute( " id " );
            
            Element bookname = (Element) book.getElementsByTagName( " name " ).item( 0 );
            String name = bookname.getFirstChild().getNodeValue();
            
            Element bookauthor = (Element) book.getElementsByTagName( " author " ).item( 0 );
            String author = bookauthor.getFirstChild().getNodeValue();
            
            Element bookprice = (Element) book.getElementsByTagName( " price " ).item( 0 );
            String price = bookprice.getFirstChild().getNodeValue();
            
            Element bookpubinfo = (Element) book.getElementsByTagName( " pubinfo " ).item( 0 );
            String pubinfo = bookpubinfo.getFirstChild().getNodeValue();
            
            System.out.println(id + " , " + name + " , " + author + " , " + price + " , " + pubinfo);
            
        }
        
        
        
    }

}

效果
1,Android应用开发详解,json,88,人民邮电出版社
2,Android权威指南,tom,79,人民教育出版社
3,Android开发案例大全,mark,68,电子工业出版社
4,Android从入门到精通,jack,68,电子工业出版社
5,Pro Spring,mark,68,电子工业出版社