使用SAX解析XML (控制台程序)

<!-- -------------------------------------------XML文件-------------------------------------------------- -->

<?xml version="1.0" encoding="UTF-8"?>

<Students>
<Student id="11">
   <name>吴松</name>
   <score>480</score>
</Student>

<Student id="12">
   <name>鲁智深</name>
   <score>400</score>
</Student>

<Student id="13">
   <id>333</id>
   <name>盘今年</name>
   <score>600</score>
</Student>
</Students>
/* ***********************************************Java Bean********************************************** */

package com.zhouguihua.bean;

public class StudentBean
{
private int id;
private String name;
private float score;


public StudentBean()
{

}

public StudentBean(int id, String name, float score)
{
   this.id = id;
   this.name = name;
   this.score = score;
}


public int getId()
{
   return id;
}
public void setId(int id)
{
   this.id = id;
}
public String getName()
{
   return name;
}
public void setName(String name)
{
   this.name = name;
}
public float getScore()
{
   return score;
}
public void setScore(float score)
{
   this.score = score;
}

}
/* ***********************************************解析工厂********************************************** */

package com.zhouguihua.sax;

import java.util.ArrayList;
import java.util.List;

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

import com.zhouguihua.bean.StudentBean;

public class StudentHandler_in extends DefaultHandler
{
//定义集合
private List<StudentBean> list = null;
//定义变量
private String value = null;
//创建类对象
private StudentBean bean = null;

//空参构造
public StudentHandler_in()
{
   //初始化集合
   this.list = new ArrayList<StudentBean>();
}

//集合的访问器
public List<StudentBean> getList()
{
   return list;
}

/**
* 遇到根目录开始节点时触发s
*/
@Override
public void startDocument() throws SAXException
{
   System.out.println("开始解析！");
}

/**
* 遇到元素节点时触发
*/
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
{
   if("Student".equals(qName))
   {
    //初始化bean
    this.bean = new StudentBean();
    //取出属性
    //this.bean.setId(Integer.parseInt(attributes.getValue("学号")));
    //this.bean.setName(attributes.getValue("姓名"));
    //this.bean.setScore(Float.parseFloat(attributes.getValue("成绩")));
   
    this.bean.setId(Integer.parseInt(attributes.getValue(0)));
   }
}

/**
* 扫描到文本时触发
*/
@Override
public void characters(char[] ch, int start, int length) throws SAXException
{
   //扫描到属性保存到成员Value中
   this.value = new String(ch,start,length);
}

/**
* 遇到元素节点结束时触发
*/
@Override
public void endElement(String uri, String localName, String qName) throws SAXException
{
   if("name".equals(qName))
   {
    this.bean.setName(this.value);
   }
   else if("score".equals(qName))
   {
    this.bean.setScore(Float.parseFloat(this.value));
   }
   else if("Student".equals(qName))
   {
    //将对象添加到集合
    this.list.add(bean);
   }
}

/**
* 遇到根目录节点结束时触发
*/
@Override
public void endDocument() throws SAXException
{
   System.out.println("结束解析！");
}
}
/* ***********************************************测试类********************************************** */

package com.zhouguihua.test;

import java.util.List;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import com.zhouguihua.bean.StudentBean;
import com.zhouguihua.sax.StudentHandler_in;

public class StudentTest_in
{

/**
* @param args
*/
public static void main(String[] args)
{
   //路径
   String uri = "src/sutdent_in.xml";
   //获取解析助手
   StudentHandler_in handler = new StudentHandler_in();
   //创建解析工厂
   SAXParserFactory factory = SAXParserFactory.newInstance();
   try
   {
    //获取解析器
    SAXParser work = factory.newSAXParser();
    //调用方法
    work.parse(uri, handler);
    //创建集合，接收
    List<StudentBean> list = handler.getList();
    if(list.size() > 0)
    {
     for(StudentBean bean:list)
     {
      System.out.println("学号为："+bean.getId());
      System.out.println("姓名为："+bean.getName());
      System.out.println("成绩为："+bean.getScore());
      System.out.println("--------------------------------------");
     }
    }
   }
   catch(Exception e)
   {
    System.out.println("error"+e.getMessage());
   }
}

}