Book類：

package com.imooc.test;

public class Book {
?private String ID;
?private String name;
?private String author;
?private String year;
?private String price;
?private String language;
?//使用get和set方法可以使得外部使用
?public String getID() {
??return ID;
?}
?public void setID(String iD) {
??ID = iD;
?}
?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 getYear() {
??return year;
?}
?public void setYear(String year) {
??this.year = year;
?}
?public String getPrice() {
??return price;
?}
?public void setPrice(String price) {
??this.price = price;
?}
?public String getLanguage() {
??return language;
?}
?public void setLanguage(String language) {
??this.language = language;
?}
?
}
HandlerTest 類：

package com.imooc.test;

import java.util.ArrayList;

import javax.xml.stream.events.StartElement;

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

//用來(lái)遍歷xml文件的開(kāi)始標(biāo)簽
public class HandlerTest extends DefaultHandler {
?int bookIndex=0;
?String value=null;
?Book book=null;
?private ArrayList<Book> bookList=new ArrayList<Book>();//保存book對(duì)象的內(nèi)容
?public ArrayList<Book> getBookList() {
??return bookList;
?}

/*public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
??// TODO Auto-generated method stub
??super.startElement(uri, localName, qName, attributes);
?}*/
?//用來(lái)結(jié)束xml文件的標(biāo)簽
/*public void endElement(String uri, String localName, String qName) throws SAXException {
?// TODO Auto-generated method stub
?super.endElement(uri, localName, qName);
}*/
//用來(lái)標(biāo)識(shí)解析開(kāi)始
@Override
public void startDocument() throws SAXException {
?// TODO Auto-generated method stub
?System.out.println("SAX解析開(kāi)始！");
?super.startDocument();
}

/*
?* 解析xml元素
?*/
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
?// TODO Auto-generated method stub
?super.startElement(uri, localName, qName, attributes);
?if(qName.equals("book")){
??
??book=new Book();
??bookIndex++;
??? System.out.println("============下面開(kāi)始遍歷第"+bookIndex+"本書(shū)的內(nèi)容==============");
??//已知book元素下的屬性名稱，并由屬性名稱得到屬性名和屬性值
??//String value=attributes.getValue("id");
??//System.out.println("book的屬性值是："+value);
??//如果不知道book屬性下的屬性名和屬性個(gè)數(shù)
??int num=attributes.getLength();
??for(int i=0;i<num;i++){
???System.out.print(qName+"元素的第"+(i+1)+"個(gè)屬性名是："+attributes.getQName(i));//注意兩本書(shū)中都僅有ID一個(gè)屬性
???System.out.println("---屬性值是："+attributes.getValue(i));
???if(attributes.getQName(i).equals("id")){
????book.setID(attributes.getValue(i));
????
???}
??}
?}else if(!(qName.equals("book"))&&!(qName.equals("bookstore"))){
??System.out.print("節(jié)點(diǎn)名是："+qName);
??//qName.equals("name")時(shí)，就可以在book對(duì)象中setName
??
?}
?
?
}
public void characters(char[] ch, int start, int length) throws SAXException {
?// TODO Auto-generated method stub
?super.characters(ch, start, length);
?? value=new String(ch, start, length);
?if(!(value.trim().equals(""))){???? //返回字符串的副本，忽略前導(dǎo)空白和尾部空白。
??System.out.println("---節(jié)點(diǎn)值是："+value);
?}
?
}
?
?public void endElement(String uri, String localName, String qName) throws SAXException {
??// TODO Auto-generated method stub
??super.endElement(uri, localName, qName);
??//判斷是否針對(duì)一本書(shū)已經(jīng)遍歷結(jié)束
??if(qName.equals("book")){
???bookList.add(book);
???book=null;
???System.out.println("============結(jié)束遍歷第"+bookIndex+"本書(shū)的內(nèi)容==============");
???
??}else if(qName.equals("name")){
???book.setName(value );
??}else if(qName.equals("author")){
???book.setName(value );
??}else if(qName.equals("year")){
???book.setName(value );
??????? }else if(qName.equals("price")){
???book.setName(value );?
???? }else if(qName.equals("language")){
???book.setName(value );?
???? }
?}
?//用來(lái)標(biāo)識(shí)解析結(jié)束
?@Override
?public void endDocument() throws SAXException {
??// TODO Auto-generated method stub
??System.out.println("SAX解析結(jié)束！");
??super.endDocument();
?}
}

SaxTest類：

package com.imooc.test;

import java.io.IOException;

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

import org.xml.sax.SAXException;

public class SaxTest {

?public static void main(String[] args) {
??// TODO Auto-generated method stub
??SAXParserFactory factory=SAXParserFactory.newInstance();
??try {
???SAXParser parser=factory.newSAXParser();
???HandlerTest handler=new HandlerTest();
????? parser.parse("f:\\books.xml",handler);?
???? System.out.println("----共有"+handler.getBookList().size()+"本書(shū)-----");
???? for(Book book:handler.getBookList()){//遍歷booList中的內(nèi)容
????? System.out.println(book.getID());
????? System.out.println(book.getName());
????? System.out.println(book.getAuthor());
????? System.out.println(book.getYear());
????? System.out.println(book.getPrice());
????? System.out.println(book.getLanguage());
????? System.out.println("===========結(jié)束==========");
???? }
??
??} catch (ParserConfigurationException e) {
???// TODO Auto-generated catch block
???e.printStackTrace();
??} catch (SAXException e) {
???// TODO Auto-generated catch block
???e.printStackTrace();
??}?catch (IOException e) {
????// TODO Auto-generated catch block
????e.printStackTrace();
???}

?}

}
運(yùn)行結(jié)果：

SAX解析開(kāi)始！
============下面開(kāi)始遍歷第1本書(shū)的內(nèi)容==============
book元素的第1個(gè)屬性名是：id---屬性值是：1
節(jié)點(diǎn)名是：name---節(jié)點(diǎn)值是：老人與海
節(jié)點(diǎn)名是：author---節(jié)點(diǎn)值是：海明威
節(jié)點(diǎn)名是：year---節(jié)點(diǎn)值是：2015
節(jié)點(diǎn)名是：price---節(jié)點(diǎn)值是：67
============結(jié)束遍歷第1本書(shū)的內(nèi)容==============
============下面開(kāi)始遍歷第2本書(shū)的內(nèi)容==============
book元素的第1個(gè)屬性名是：id---屬性值是：2
節(jié)點(diǎn)名是：name---節(jié)點(diǎn)值是：看見(jiàn)
節(jié)點(diǎn)名是：language---節(jié)點(diǎn)值是：Chinses
節(jié)點(diǎn)名是：author---節(jié)點(diǎn)值是：柴靜
節(jié)點(diǎn)名是：year---節(jié)點(diǎn)值是：2014
節(jié)點(diǎn)名是：price---節(jié)點(diǎn)值是：87
============結(jié)束遍歷第2本書(shū)的內(nèi)容==============
SAX解析結(jié)束！
----共有2本書(shū)-----
1
67
null
null
null
null
===========結(jié)束==========
2
87
null
null
null
null
===========結(jié)束==========