SAX解析XML文档

 

package com.SAX.resolve;


import java.io.File; 


import java.util.Stack; 
import javax.xml.parsers.ParserConfigurationException; 


import javax.xml.parsers.SAXParser; 
 
import javax.xml.parsers.SAXParserFactory; 
 
 
 
import org.xml.sax.Attributes; 
 
import org.xml.sax.SAXException; 
 
import org.xml.sax.helpers.DefaultHandler; 


public class SAXTest {



public static void main(String[] args) throws ParserConfigurationException, Exception { 
 
        //第一步：获得解析工厂的实例 
 
        SAXParserFactory spf = SAXParserFactory.newInstance(); 
 
        //第二部：获得工厂解析器  
 
        SAXParser sp = spf.newSAXParser(); 
 
        //第三部：对xml进行解析 
 
        sp.parse(new File("test.xml"), new MyHandler2()); 
 
 
 
    } 
}
   class MyHandler2 extends DefaultHandler{ 
 
    
 
    private Stack<String> stack = new Stack<String>(); 
 
     
 
    private String id; 
 
    private String title; 
 
    private String keywords; 
 
    private String kind; 
 
    private String describe; 
 
    private String date; 
 
    private String url; 
 
    private String author; 
 
    private String publisher; 
 
     
 
     
 
    @Override 
 
    public void startElement(String uri, String localName, String qName, 
 
            Attributes attributes) throws SAXException { 
    
    //将当前元素的名字压到栈中 
     
        stack.push(qName); 
 
        //将元素的属性名字和值一一打印出来 
 
        for (int i = 0; i < attributes.getLength(); i++) { 
 
            String attrname = attributes.getQName(i); 
 
            String attrvalue = attributes.getValue(i); 
 
            System.out.println(attrname + "=" + attrvalue); 
 
        } 
 
         
 
    } 
 
    @Override 
 
    public void characters(char[] ch, int start, int length) 
 
            throws SAXException { 
 
        //将栈顶中的元素出栈 
 
        String tag = stack.peek(); 
 
        //分别判断当前栈顶中的元素与哪个定义的元素名字字符串相同，若相同则把当前的元素的字符串的值赋值给该变量 
 
        if("id".equals(tag)){ 
 
            id = new String(ch,start,length); 
        } 
        
        else if ("title".equals(tag)) { 
 
            title = new String(ch,start,length); 
 
        } 
 
        else if ("keywords".equals(tag)) { 
 
            keywords = new String(ch,start,length); 
 
        } 
 
        else if ("kind".equals(tag)) { 
 
            kind = new String(ch,start,length); 
 
        } 
 
        else if ("describe".equals(tag)) { 
 
            describe = new String(ch,start,length); 
 
        } 
 
        else if ("date".equals(tag)) { 
 
            date = new String(ch,start,length); 
 
        } 
 
        else if ("url".equals(tag)) { 
 
            url = new String(ch,start,length); 
 
        } 
        
        else if ("author".equals(tag)) { 
         
            author = new String(ch,start,length); 
 
        } 
 
        else if ("publisher".equals(tag)) { 
 
            publisher = new String(ch,start,length); 
 
        } 
 
         
 
         
 
    } 
 
    @Override 
 
    public void endElement(String uri, String localName, String qName) 
 
            throws SAXException { 
 
        //将栈顶元素移除 
 
        stack.pop(); 
 
        //分别将xml中的元素信息打印输出 
 
        if("resourceitem".equals(qName)){ 
 
            System.out.println("id:" + id); 
 
            System.out.println("title:" + title); 
 
            System.out.println("keywords:" + keywords); 
            System.out.println("kind:" + kind); 
            
            System.out.println("describe:" + describe); 
 
            System.out.println("date:" + date); 
 
            System.out.println("url:" + url); 
 
            System.out.println("author:" + author); 
 
            System.out.println("publisher:" + publisher); 
 
             
 
        } 
 
    } 
 
}