public static void main(String[] args) {
		MemberDAO memberDAO = new MemberDAO();
		Member m = memberDAO.findById(6);
		//Member m = new Member("周", "1345612", "asdfj@163.com");
		//memberDAO.save(m);
		m.setUsername("小明");
		memberDAO.attachDirty(m);
		System.out.println(m.toString());
	}