SAX解析xml文件

SAX解析xml文件，将解析出来的结果放到一个bean中，再将所有的baen放到list列表中

例子程序的xml文件为：

<?xml version="1.0" encoding="UTF-8"?> <书架> <书> <书名>海的女儿</书名> <作者>安徒生</作者> <售价>50.0元</售价> </书> <书> <书名>卖火柴的小女孩</书名> <作者>安徒生</作者> <售价>28.0元</售价> </书> </书架>

需要一个book类，存放书的具体信息（书名，作者，售价）为:

package com.flower.parsexml; 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; } }

下面开始解析，代码如下：

package com.flower.parsexml; 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.XMLReader; import org.xml.sax.helpers.DefaultHandler; public class SAXparse { @SuppressWarnings("unchecked") public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException { // 创建解析工厂 SAXParserFactory factory = SAXParserFactory.newInstance(); // 创建解析器 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 reader.parse("src/books.xml"); ArrayList list = handler.getBooks(); Book book; for(int i = 0; i < list.size(); i++) { book = new Book(); book = (Book) list.get(i); System.out.println(book.getName() + book.getAuthor() + book.getPrice()); } } } class BeanListHandler extends DefaultHandler { //将读取的内容存放到一个book对象中，存放到list集合中 ArrayList<Book> list = new ArrayList<Book>(); 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 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("售价".equals(currentTag)) { String price = new String(ch,start,length); book.setPrice(price); } } @Override public void endElement(String uri, String localName, String qName) throws SAXException { if("书".equals(qName)) { list.add(book); book = null; } currentTag = null; } public ArrayList<Book> getBooks() { return list; } }

 

运行结果为：

海的女儿安徒生50.0元 卖火柴的小女孩安徒生28.0元