SAX方式生成xml文档

public void creatXML() {
		ArrayList<Book> booksList = parserXML();
		
		/*
		 * 生成xml
		 */
		//1.创建一个SAXTransformerFactory类的对象
		SAXTransformerFactory tff = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
		try {
			//2.通过SAXTransformerFactory对象创建一个TransformerHandler类对象
			TransformerHandler handler = tff.newTransformerHandler();
			//3.通过TransformerHandler对象创建一个Transformer对象
			Transformer tr = handler.getTransformer();
			//4.通过Transformer对象对生成的xml文件进行设置
			//设置xml的编码
			tr.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
			//设置xml是否换行
			tr.setOutputProperty(OutputKeys.INDENT, "yes");			
			//5.创建一个Result对象
			File f = new File("src/res/newbooks.xml");
			if(!f.exists()) {
				f.createNewFile();
			}
			Result result = new StreamResult(new FileOutputStream(f));
			//6.创建一个Result对象，并且与其handler关联
			handler.setResult(result);
			//7.利用handler对象进行xml文件内容的编写
			//打开document
			handler.startDocument();
			AttributesImpl atts = new AttributesImpl();
			handler.startElement("", "", "bookstore", atts);
			for (Book book : booksList) {
				atts.clear();
				atts.addAttribute("", "", "id", "", book.getId());
				handler.startElement("", "", "book", atts);
				//创建name节点
				if(book.getName() != null && !book.getName().trim().equals("")) {
					atts.clear();
					handler.startElement("", "", "name", atts);
					handler.characters(book.getName().toCharArray(), 0, book.getName().length());
					handler.endElement("", "", "name");
					
				}
				//创建author节点
				if(book.getAuthor() != null && !book.getAuthor().trim().equals("")) {
					atts.clear();
					handler.startElement("", "", "author", atts);
					handler.characters(book.getAuthor().toCharArray(), 0, book.getAuthor().length());
					handler.endElement("", "", "author");
					
				}
				//创建year节点
				if(book.getYear() != null && !book.getYear().trim().equals("")) {
					atts.clear();
					handler.startElement("", "", "year", atts);
					handler.characters(book.getYear().toCharArray(), 0, book.getYear().length());
					handler.endElement("", "", "year");
					
				}
				//创建price节点
				if(book.getPrice() != null && !book.getPrice().trim().equals("")) {
					atts.clear();
					handler.startElement("", "", "price", atts);
					handler.characters(book.getPrice().toCharArray(), 0, book.getPrice().length());
					handler.endElement("", "", "price");
					
				}
				//创建language节点
				if(book.getLanguage() != null && !book.getLanguage().trim().equals("")) {
					atts.clear();
					handler.startElement("", "", "language", atts);
					handler.characters(book.getLanguage().toCharArray(), 0, book.getLanguage().length());
					handler.endElement("", "", "language");
									
				}
				handler.endElement("", "", "book");
				
			}
			handler.endElement("", "", "bookstore");
			//关闭document
			handler.endDocument();
		} catch (TransformerConfigurationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SAXException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}