SAX方式创建/解析xml

1.新建文件名为：Saxdemo.java，代码：

package com.test; import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream; 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; import com.inter.XmlDocument; public class SaxDemo implements XmlDocument{     public void createXml(String fileName)    {        System.out.println("<<" + fileName + ">>");    }     public void parserXml(String fileName)    {        SAXParserFactory saxfac = SAXParserFactory.newInstance();        try        {            SAXParser saxparser = saxfac.newSAXParser();            InputStream is = new FileInputStream(fileName);            saxparser.parse(is, new MySAXHandler());        }        catch (ParserConfigurationException e)        {            e.printStackTrace();        }        catch (SAXException e)        {            e.printStackTrace();        }        catch (FileNotFoundException e)        {            e.printStackTrace();        }        catch (IOException e)        {            e.printStackTrace();        }        System.out.println("-----sax解析完毕------");    }} class MySAXHandler extends DefaultHandler{    boolean hasAttribute = false;    Attributes attributes = null;     public void startDocument() throws SAXException    {        System.out.println("开始打印");    }     public void endDocument() throws SAXException    {        System.out.println("结束打印");    }     public void startElement(String uri, String localName, String qName,            Attributes attributes) throws SAXException    {        if (qName.equals("employees"))        {            return;        }        if (qName.equals("employee"))        {            System.out.println(qName);        }        if (attributes.getLength() > 0)        {            this.attributes = attributes;            this.hasAttribute = true;        }    }     public void endElement(String uri, String localName, String qName)            throws SAXException    {        if (hasAttribute && (attributes != null))        {            for (int i = 0; i < attributes.getLength(); i++)            {                System.out.println(attributes.getQName(0)                        + attributes.getValue(0));            }        }    }     public void characters(char[] ch, int start, int length)            throws SAXException    {        System.out.println(new String(ch, start, length));    }} 

 

2.编写测试类，TestSax.java，代码如下：

public class TestDom{    public static void main(String[] args)    {Saxdemo    sax  =  new  Saxdemo(); //创建的xml见图一sax.createXml("D://employee.xml");//解析的xml见图二sax.parseXml("E://employee.xml");            }}