books.XML文件：
书籍book.java实体类：
public class Book {
private String id;
private String name;
private String price;
private String author;
private String year;
private String language;
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
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;
}
}
SAXPaserHandler继承DefaultHandler类，实现对XML文件的解析：
import java.util.ArrayList;
import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;import com.xml.sax.model.Book;public class SAXPaserHandler extends DefaultHandler { int bookIndex=0; String str; Book book; ArrayList<Book> bookList = new ArrayList<Book>(); public ArrayList<Book> getBookList() { return bookList; } /* * 用来解析XML文件元素的 */ @Override public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { //调用DefaultHandler类的startElement方法 super.startElement(uri, localName, qName, attributes); //开始解析book元素的属性 if(qName.equals("book")){ bookIndex++; book = new Book(); //已知book元素下的属性名称，根据属性名称获取属性值 // System.out.println("book的属性值是："+attributes.getValue("id")); //不知book元素下的属性名称，如何获取属性值？下面就是 for(int i=0;i<attributes.getLength();i++){ System.out.println("开始遍历第"+bookIndex+"本书的第"+(i+1)+"个属性名是："+attributes.getQName(i)+ "--------属性值是："+attributes.getValue(i)); if(attributes.getQName(i).equals("id")) book.setId(attributes.getValue(qName)); } }else if(!qName.equals("book")&&!qName.equals("bookstore")){ System.out.print("节点名是："+qName+"----"); } } /* * 获取节点值 */ @Override public void characters(char[] ch, int start, int length) throws SAXException { super.characters(ch, start, length); str=new String(ch,start,length); if(!str.trim().equals("")) System.out.println("节点值是："+str); } @Override public void endElement(String uri, String localName, String qName) throws SAXException { //调用DefaultHandler类的endElement方法 super.endElement(uri, localName, qName); if(qName.equals("book")){ bookList.add(book); book=null; System.out.println("================结束遍历第"+bookIndex+"本书内容=============="); }else if(qName.equals("name")){ book.setName(str); }else if(qName.equals("price")){ book.setPrice(str); }else if(qName.equals("author")){ book.setAuthor(str); }else if(qName.equals("year")){ book.setYear(str); }else if(qName.equals("language")){ book.setLanguage(str); } } /* * 用来标志解析开始 */ @Override public void startDocument() throws SAXException { System.out.println("SAX解析开始"); super.startDocument(); } /* * 用来标志解析结束 */ @Override public void endDocument() throws SAXException { System.out.println("SAX解析结束"); super.endDocument(); }}SAXTest.java测试类：
import java.io.IOException;import javax.xml.parsers.ParserConfigurationException;import javax.xml.parsers.SAXParser;import javax.xml.parsers.SAXParserFactory;import org.xml.sax.SAXException;import com.xml.sax.handler.SAXPaserHandler;import com.xml.sax.model.Book;public class SAXTest { public static void main(String[] args) { //获取SAXParserFactory实例 SAXParserFactory spf = SAXParserFactory.newInstance(); //通过spf获取SAXParser的实例 try { SAXParser paser= spf.newSAXParser(); SAXPaserHandler sp=new SAXPaserHandler(); paser.parse("books.xml", sp); System.out.println("##########共有"+sp.getBookList().size()+"本书！！！"); //可以遍历输出每本书的属性值for(Book book:sp.getBookList()){
System.out.println("书的ID是："+book.getId()); System.out.println("书的书名是："+book.getName()); System.out.println("书的价格是："+book.getPrice()); System.out.println("书的作者是："+book.getAuthor()); System.out.println("书的出版日期是："+book.getYear()); System.out.println("书的语言是："+book.getLanguage()); System.out.println("***************本书遍历结束***************"); } } 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(); } }}