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

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

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

import Book;

//要把数据封装到对象中
public class SAXDemo3 {
	public static void main(String[] args) throws Exception {
		SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
		XMLReader reader = parser.getXMLReader();
		List<Book> books = new ArrayList<Book>();
		reader.setContentHandler(new MyContentHandler2(books));
		reader.parse("src/book.xml");
		//验证
		for(Book b:books)
			System.out.println(b);
	}
}
class MyContentHandler2 extends DefaultHandler{
	private List<Book> books;
	public MyContentHandler2(List<Book> books){
		this.books = books;
	}
	private Book book;
	private String currentElementName;
	public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException {
		currentElementName = qName;
		if("书".equals(qName)){
			book = new Book();
		}
	}

	public void endElement(String uri,String qName)
			throws SAXException {
		if("书".equals(qName)){
			books.add(book);
			book = null;
		}
		currentElementName = null;
		
	}

	public void characters(char[] ch,int start,int length)
			throws SAXException {
		if("书名".equals(currentElementName)){
			book.setName(new String(ch,start,length));
		}
		if("作者".equals(currentElementName)){
			book.setAuthor(new String(ch,length));
		}
		if("售价".equals(currentElementName)){
			book.setPrice(new String(ch,length));
		}
	}
	
}