6. SAX解析XML

 1 SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
 2 SAXParser parser = saxParserFactory.newSAXParser();
 3 XMLReader reader = parser.getXMLReader();
 4 reader.setContentHandler(new ContentHandler() {
 5        // 开始文档节点
 6        public void startDocument() throws SAXException {
 7             System.out.println("开始文档节点");
 8        }
 9 
10        // 结束文档节点
11        public void endDocument() throws SAXException {
12             System.out.println("结束文档节点");
13        }
14 
15        // 开始元素节点
16        @Override
17        public void startElement(String uri, String localName,
18              String qName, Attributes atts) throws SAXException {
19             System.out.println("开始元素节点" + qName);
20             //获取元素的属性操作
21             String data = atts.getValue(0);
22         }
23 
24        // 结束元素节点
25        @Override
26        public void endElement(String uri, String localName, String qName)
27          throws SAXException {
28             System.out.println("结束元素节点" + qName);
29        }
30 
31        // 获取文本
32        @Override
33        public void characters(char[] ch, int start, int length)
34              throws SAXException {
35             System.out.println(new String(ch, start, length));
36        }
37 
38        //还有几个方法，不常用，空实现.....
39   });
40  reader.parse("bookstore.xml");

1 reader.setContentHandler(new DefaultHandler() {     
2        @Override
3        public void characters(char[] ch, int start, int length)
4          throws SAXException {
5             System.out.println(new String(ch, start, length));
6        }
7 });