java解析xml四种方式(2)-SAX方式

package com.michael.xml.sax;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
* @author michael
*
*/
public class MySAXHandler extends DefaultHandler {
boolean hasAttribute = false;
Attributes attributes = null;

public void startDocument() throws SAXException {
System.out.println("文档开始打印了");
}

public void endDocument() throws SAXException {
System.out.println("文档打印结束了");
}

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));
}
}

package com.michael.xml.sax;

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.SAXException;

import com.michael.xml.dom.XmlDocument;

/**
* @author michael SAX文档解析
*/
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();
}
}

public static void main(String[] args) {
SaxDemo demo = new SaxDemo();
// demo.createXml("d:/michael_sax.xml");
demo.parserXml("d:/michael.xml");
}
}