java解析xml四种方式完整项目

import java.awt.print.Book; import java.io.IOException; import java.util.ArrayList; import javax.xml.parsers.ParserConfigurationException; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; public class SAXTest { /** * @param args */ public static void main(String[] args) { //锟斤拷取一锟斤拷SAXParserFactory锟斤拷实锟斤拷 SAXParserFactory factory = SAXParserFactory.newInstance(); //通锟斤拷factory锟斤拷取SAXParser实锟斤拷 try { SAXParser parser = factory.newSAXParser(); //锟斤拷锟斤拷SAXParserHandler锟斤拷锟斤拷 SAXParserHandler handler = new SAXParserHandler(); parser.parse("books.xml", handler); } 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(); } } } class SAXParserHandler extends DefaultHandler { String value = null; int bookIndex = 0; /** * 用来标识解析开始 */ @Override public void startDocument() throws SAXException { // TODO Auto-generated method stub super.startDocument(); System.out.println("SAX解析开始"); } /** * 用来标识解析结束 */ @Override public void endDocument() throws SAXException { // TODO Auto-generated method stub super.endDocument(); System.out.println("SAX解析结束"); } /** * 解析xml元素 */ @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); if (qName.equals("book")) { bookIndex++; //开始解析book元素的属性 System.out.println("======================开始遍历某一本书的内容================="); //不知道book元素下属性的名称以及个数，如何获取属性名以及属性值 int num = attributes.getLength(); for(int i = 0; i < num; i++){ System.out.print("book元素的第" + (i + 1) + "个属性名是：" + attributes.getQName(i)); System.out.println("---属性值是：" + attributes.getValue(i)); if (attributes.getQName(i).equals("id")) { } } } else if (!qName.equals("bookstore")) { System.out.print("节点名是：" + qName + "---"); } } @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); } @Override 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("")) { System.out.println("节点值是：" + value); } } }