SAX方式解析xml

 

package XMLday01;

import java.io.File;

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 Exception {
        test1();
    }

    private static void test1() throws Exception {
        //javax.xml.parsers
        //sax解析器工厂
        //工厂创建sax解析器
        //解析
        SAXParserFactory factory=SAXParserFactory.newInstance();
        SAXParser parser=factory.newSAXParser();
        parser.parse(new File("E:\\1.xml"), new MyHandler());
    }

    static class MyHandler extends DefaultHandler{

        public void startDocument() throws SAXException{
            System.out.println("<?xml version='1.0'?>");
        }

        public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException{
            System.out.print("<"+qName);
            for(int i=0;i<attributes.getLength();i++){
                String name=attributes.getQName(i);
                String value=attributes.getValue(i);
                System.out.print(" "+name+"=\""+value+"\"");
            }
            System.out.println(">");
        }
        public void endElement(String uri,String localName,String qName) throws SAXException{
            System.out.println("</"+qName+">");
        }
        public void characters(char[] ch,int start,int length) throws SAXException{
            String s=new String(ch,start,length);
            System.out.println(s);
        }
    }
}