sax解析案例(javabean封装xml文档数据)

最新推荐文章于 2025-09-10 22:21:01 发布

转载最新推荐文章于 2025-09-10 22:21:01 发布 · 99 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/aineko/p/3800882.html

文章标签：

#java

 1 package itcast.sax;
 2 
 3 import java.io.IOException;
 4 import java.util.List;
 5 
 6 import javax.xml.parsers.ParserConfigurationException;
 7 import javax.xml.parsers.SAXParser;
 8 import javax.xml.parsers.SAXParserFactory;
 9 
10 import org.xml.sax.SAXException;
11 import org.xml.sax.XMLReader;
12 
13 public class Demo {
14     
15     @SuppressWarnings("unchecked")
16     public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
17         //1、创建解析工程
18         SAXParserFactory factory = SAXParserFactory.newInstance();
19         
20         //2、得到解析器
21         SAXParser sp = factory.newSAXParser();
22         
23         //3、得到读取器
24         XMLReader reader = sp.getXMLReader();
25         
26         //4、设置内容处理器
27         BeanListHandler handler  = new BeanListHandler();
28         reader.setContentHandler(handler);
29         
30         //5、读取xml文档内容
31         reader.parse("src/book.xml");
32         
33 
34         List<Book> list = handler.getList();
35         System.out.println(list);
36     }
37 
38 }

View Code

 1 package itcast.sax;
 2 
 3 import java.util.ArrayList;
 4 import java.util.List;
 5 
 6 import org.xml.sax.Attributes;
 7 import org.xml.sax.SAXException;
 8 import org.xml.sax.helpers.DefaultHandler;
 9 
10 //把xml文档中的每一本封装到一个book对象，并把多个book对象放在一个list集合中
11 public class BeanListHandler extends DefaultHandler {
12     
13     private List list = new ArrayList();
14     private String currentTag;
15     private Book book;
16 
17     @Override
18     public void characters(char[] ch, int start, int length)
19             throws SAXException {
20         if("bookname".equals(currentTag)){
21             String bookname = new String(ch,start,length);
22             book.setName(bookname);
23         }
24         if("editor".equals(currentTag)){
25             String author = new String(ch,start,length);
26             book.setAuthor(author);
27         }
28         if("price".equals(currentTag)){
29             String price = new String(ch,start,length);
30             book.setPrice(price);
31         }
32     }
33 
34     @Override
35     public void endElement(String uri, String localName, String name)
36             throws SAXException {
37         if(name.equals("书")){
38             list.add(book);
39             book=null;
40         }
41         currentTag = null;
42     }
43 
44     @Override
45     public void startElement(String uri, String localName, String name,
46             Attributes attributes) throws SAXException {
47         
48         currentTag=name;
49         if("书".equals(currentTag)){
50             book = new Book();
51         }
52         
53     }
54 
55     public List getList() {
56         return list;
57     }
58 
59 }

View Code

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <书架>
 3     <书>
 4         <bookname name="zero">java jiuyepeixunjiaocheng</bookname>
 5         <editor>zhangxiaoxiang</editor>
 6         <price>109yuan</price>
 7     </书>
 8     <书>
 9         <bookname>javaWebprogramming</bookname>
10         <editor>lihuoming</editor>
11         <price>28.00yuan</price>
12     </书>
13 </书架>