sax封装xml文档数据

<?xml version="1.0" encoding="UTF-8" standalone="no"?><书架>
	<书>
		<书名 name="xxxx">java web</书名>
		<作者>张大</作者>
		<价格>102</价格>
	</书>
	<书>
		<书名>spring</书名>
		<作者>呜呜</作者>
		<价格>55</价格>
	</书>
</书架>

有一个javabean用来封装

package cn.itcast.sax;

public class Book {
	private String name;
	private String author;
	private String price;
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getAuthor() {
		return author;
	}
	public void setAuthor(String author) {
		this.author = author;
	}
	public String getPrice() {
		return price;
	}
	public void setPrice(String price) {
		this.price = price;
	}
	
}

解析如下

package cn.itcast.sax;

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;

public class Demo3 {

	public static void main(String[] args) throws Exception {
		//1.创建工厂
		SAXParserFactory saxP = SAXParserFactory.newInstance();
		
		//2.得到解析器
		SAXParser parser = saxP.newSAXParser();
		
		//3.得到读取器
		XMLReader xmlR = parser.getXMLReader();
		
		//4.设置内容处理器
		BeanlistHandler bh = new BeanlistHandler();
		xmlR.setContentHandler(bh);
		//5.读取xml内容
		xmlR.parse("src/book.xml");
		List<Book> list = bh.getList();
		System.out.println(list);
		
	}

}

class BeanlistHandler extends DefaultHandler{
	private List list = new ArrayList();
	private String currentTag;
	private Book book;
	
	@Override
	public void startElement(String uri, String localName, String qName,
			Attributes attributes) throws SAXException {
		currentTag = qName;
		if("书".equals(currentTag)){
			book = new Book();
		}
		
	}

	@Override
	public void endElement(String uri, String localName, String qName)
			throws SAXException {
		if("书".equals(qName)){
			list.add(book);
			book = null;
		}
		currentTag = null;
	}

	@Override
	public void characters(char[] ch, int start, int length)
			throws SAXException {
		if("书名".equals(currentTag)){
			String name = new String(ch,start,length);
			book.setName(name);
		}
		if("作者".equals(currentTag)){
			String author = new String(ch,start,length);
			book.setAuthor(author);
		}
		if("价格".equals(currentTag)){
			String price = new String(ch,start,length);
			book.setPrice(price);
		}
	}

	public List getList() {
		return list;
	}
	
}