ReadXmlDemo.java

import java.io.*;
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;

public class ReadXmlDemo extends DefaultHandler {

    public static void main(String[] arguments) {
        if (arguments.length > 0){
     ReadXmlDemo read = new ReadXmlDemo(arguments[0]);
 } else {
     System.out.println("Usage: java ReadXmlDemo filename");
 }
    }

    ReadXmlDemo(String xmlFile) {
        File input = new File(xmlFile);
 SAXParserFactory factory = SAXParserFactory.newInstance();
 factory.setValidating(true);
 try {
     SAXParser sax = factory.newSAXParser();
     sax.parse(input, new XmlHandler() );
 } catch (ParserConfigurationException pce) {
     System.out.println("Could not create that parser.");
     System.out.println(pce.getMessage());
 } catch (SAXException saxe) {
     System.out.println("Problem with the SAX parser.");
     System.out.println(saxe.getMessage());
 } catch (IOException ioe) {
     System.out.println("Error reading file.");
     System.out.println(ioe.getMessage());
 }
    }
}

class XmlHandler extends DefaultHandler {
    static int READING_NAME = 1;
    static int READING_SEX = 2;
    static int READING_BIRTH = 3;
    static int READING_NOTHING = 0;
    int currentActivity = READING_NOTHING;
    ReadXml xml = new ReadXml();

    XmlHandler() {
        super();
    }

    public void startElement(String uri, String localName, String qName, Attributes attributes) {
   
        if (qName.equals("title"))
            currentActivity = READING_NAME;
 else if (qName.equals("file"))
     currentActivity = READING_SEX;
 //else if (qName.equals("Birth"))
     //currentActivity = READING_BIRTH;
    }

    public void characters(char[] ch, int start, int length) {
        String value = new String(ch, start, length);
 if (currentActivity == READING_NAME)
     xml.name = value;
 if (currentActivity == READING_SEX)
     xml.sex = value;
 //if (currentActivity == READING_BIRTH)
     //xml.birth = value;
    }

    public void endElement(String uri, String localName, String qName) {
        if (qName.equals("page")) {
     System.out.println(" Name: "+xml.name);
     System.out.println("Sex: "+xml.sex);
     //System.out.println("Birth: "+xml.birth);
     xml = new ReadXml();
 }
    }
}

class ReadXml {
    String name;
    String sex;
    String birth;
}

SaxParsePage.java

import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import java.io.*;
/**
 * <p>Title: 使用SAX解析XML</p>
 * <p>Description: 使用SAX接口解析book.xml文件</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Filename: SaxParsePage.java</p>
 * @version 1.0
 */
public class SaxParsePage extends DefaultHandler {
/**
 *<br>方法说明：主方法，声明解析工厂和加载XML文件
 *<br>输入参数：
 *<br>返回类型：
 */
  public static void main(String[] argv) {
    try {
      //建立SAX解析工厂
      SAXParserFactory spfactory = SAXParserFactory.newInstance();
      //生成SAX解析对象
      SAXParser parser = spfactory.newSAXParser();
      //指定XML文件，进行XML解析
      parser.parse(new File("book.xml"), new SaxParsePage());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
/**
 *<br>方法说明：文件打开时调用
 *<br>输入参数：
 *<br>返回类型：
 */
  public void startDocument() {
    System.out.println("***开始解析***");
  }
/**
 *<br>方法说明：当遇到开始标记时调用
 *<br>输入参数：
 *<br>返回类型：
 */
  public void startElement(String uri,
                           String localName,
                           String qName,
                           Attributes attributes) throws SAXException {

    System.out.println("节点开始：" + qName);
    for(int i=0;i<attributes.getLength();i++){
     System.out.println("节点属性名称：" + attributes.getQName(i));
     System.out.println("节点属性值："+attributes.getValue(i));
    }
  }
/**
 *<br>方法说明：当分析器遇到无法识别为标记或者指令类型字符时调用
 *<br>输入参数：
 *<br>返回类型：
 */
  public void characters(char[] ch,
                         int offset,
                         int length) throws SAXException{

    System.out.println("节点数据：" + new String(ch, offset, length));
  }
/**
 *<br>方法说明：当遇到节点结束时调用
 *<br>输入参数：
 *<br>返回类型：
 */
  public void endElement(String uri,
                         String localName,
                         String qName) {

    System.out.println("节点结束：" + qName);
  }
/**
 *<br>方法说明：当到文档的末尾调用
 *<br>输入参数：
 *<br>返回类型：
 */
  public void endDocument() {
    System.out.println("****文件解析完毕****");
  }
}