用javabean封装xml文档数据

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//book.xml

<?xml version="1.0" encoding="UTF-8"?><bookstore><book id="1"><name>冰与火之歌</name><author>乔治马丁</author><year>2014</year><price>89</price><language>English</language></book><book id="2"><name>安徒生童话</name><year>2004</year><price>77</price><language>English</language></book></bookstore>

//Books.java

package com.huowolf.handler;public class Books {private String name;private String author;private int year;private double price;public void setName(String name) {this.name = name;}public void setAuthor(String author) {this.author = author;}public void setYear(int year) {this.year = year;}public void setPrice(double price) {this.price = price;}public String getName() {return name;}public String getAuthor() {return author;}public int getYear() {return year;}public double getPrice() {return price;}}

//Demo.java

package com.huowolf.handler;/* * 用javabean封装xml文档数据 */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 {//获取一个解析工厂SAXParserFactory factory = SAXParserFactory.newInstance();//通过factory获取解析器SAXParser parser = factory.newSAXParser();//得到读取器XMLReader reader = parser.getXMLReader();//设置内容处理器BeanListHandler handler = new BeanListHandler();reader.setContentHandler(handler);//读取xml文档内容reader.parse("books.xml");List<Books> list = handler.getBooks();System.out.println(list);System.out.println(list.get(0).getAuthor());}}//把xml文档中的每一本书封装到一个book对象，并把多个book对象放在一个list集合中返回class BeanListHandler extends DefaultHandler {private List<Books> list= new ArrayList<Books>();private String currentTag;private Books  book;@Overridepublic void startDocument() throws SAXException {System.out.println("开始解析");}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {currentTag = qName;if(currentTag.equals("book")) {book = new Books();}}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {if("name".equals(currentTag)) {String name = new String(ch, start, length);book.setName(name);}if("author".equals(currentTag)) {String author = new String(ch, start, length);book.setAuthor(author);}if("year".equals(currentTag)) {int year = Integer.parseInt(new String(ch, start, length));book.setYear(year);}if("price".equals(currentTag)) {double price = Double.parseDouble(new String(ch, start, length));book.setPrice(price);}}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {//System.out.println(qName);if(qName.equals("book")) {list.add(book);book = null;}currentTag = null;}//返回list集合public List<Books> getBooks() {return list;}}

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