xml存放信息问题

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xml存放信息问题10

public void saveHistory(String strRead) {
		String from_account = strRead.split("&")[1].split(":")[0];
		String to_account = strRead.split("&")[1].split(":")[1];
		String msg = strRead.split("&")[1].split(":")[2];
		System.out.println("服务端收到的聊天记录"+msg);
		UserInforDao dao = new UserInforDao();
		if (dao.saveHistory(from_account, to_account,msg)) {
			JOptionPane.showMessageDialog(null, "保存聊天记录成功");
		} else {
			JOptionPane.showMessageDialog(null, "保存聊天记录失败");
		}
	}

public boolean saveHistory(String from_account, String to_account,
			String msg) {
		// TODO Auto-generated method stub
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		DocumentBuilder db;
		try {
			db = dbf.newDocumentBuilder();
			Document doc = db.parse(new File("XmlFile/History.xml"));

			NodeList lstUser = doc.getElementsByTagName("history");
			StringBuffer sb = new StringBuffer();
			for (int i = 0; i < lstUser.getLength(); i++) {
				Element el = (Element) lstUser.item(i);
				if (el.getAttribute("myId").equals(from_account)
						&& el.getAttribute("friendId").equals(to_account)) {
					sb.append(msg).append("\r\n");
					el.setTextContent(sb.toString());
					System.out.println("xml的聊天记录"+el.getTextContent());
					TransformerFactory tff = TransformerFactory
							.newInstance();
					Transformer tf = tff.newTransformer();
					tf.transform(new DOMSource(doc), new StreamResult(
							new File("XmlFile/History.xml")));
					return true;
				} 
			}
					Element root = doc.getDocumentElement();
					Element history = doc.createElement("history");
					history.setAttribute("myId", from_account);
					history.setAttribute("friendId", to_account);
					Element message=doc.createElement("message");
					sb.append(msg).append("\r\n");
					message.setTextContent(sb.toString());
					history.appendChild(message);
					root.appendChild(history);
					TransformerFactory tff = TransformerFactory
							.newInstance();
					Transformer tf = tff.newTransformer();
					tf.transform(new DOMSource(root), new StreamResult(
							new File("XmlFile/History.xml")));
					return true;
				

		} catch (ParserConfigurationException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (SAXException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (TransformerConfigurationException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (TransformerException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		return false;
	}

聊天记录是这种形式：
1000说：【2013-10-22 12:59:46】
kkkkkkkkkkkkkkkkkkkkkkkkkk
1000说：【2013-10-22 12:59:53】
kkkkkkkkkkkkkkkkjjjjjjjjjjjjjjjjjjjjjjjj
1000说：【2013-10-22 13:43:57】
vvvvvvvvvvvvvvvvvvvvvvvvvvvv

但是结果保存的是酱紫的

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Historys>
	<history friendId="1001" myId="1000">1000说：【2013-10-21 23&#13;
   	</history>
	<history friendId="1002" myId="1000">		
	</history>
	<history friendId="1003" myId="1000">		
	</history>
	<history friendId="1000" myId="1001">1000说：【2013-10-21 23&#13;
	</history>
	<history friendId="1002" myId="1002">1002说：【2013-10-21 20&#13;
	</history>
	<history friendId="1003" myId="1005">1003说：【2013-10-22 02&#13;
	</history>
	<history friendId="1005" myId="1003">1005说：【2013-10-22 02&#13;
	</history>
</Historys>