SAX解析XML文件实例代码

小咪咪 2022-08-23 14:44 199阅读 0赞

import java.io.File;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.List;
    
    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 XMLTest extends DefaultHandler {
    
        public void startDocument() throws SAXException{
            System.out.println("<?xml version='1.0' encoding='UTF-8' ?>");
        }
        public void processingInstruction(String target ,String data) throws SAXException{
            System.out.println("<?"+target+" "+data+"?>");
        }
        public void startElement(String uri,String localName,
                String qName,Attributes attrs)throws SAXException {
            System.out.print("<"+qName);
            int len=attrs.getLength();
            for(int i=0;i<len;i++){
                System.out.print(" ");
                System.out.print(attrs.getQName(i));
                System.out.print("=\"");
                System.out.print(attrs.getValue(i));
                System.out.print("\"");
            }
            System.out.print(">");
            List list=new ArrayList();
        }
        public void characters(char[] ch,int start,
                int length)throws SAXException {
            System.out.println(new String(ch,start,length));
        
        }
        public void endElement(String uri,String localName,
                String qName)throws SAXException {
            System.out.println("</"+qName+">");
        
        }
        public static void main(String[] args) {
            SAXParserFactory sdf=SAXParserFactory.newInstance();
            SAXParser sp=null;
            try {
                sp=sdf.newSAXParser();
                //aa.xml里面必须有数据,可以解析出来里面的内容
                File f=new File("c:/aa.xml");
                sp.parse(f,new XMLTest());
            } catch (ParserConfigurationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (SAXException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }
    }