r public class MySessionDAO extends CachingSessionDAO { private JdbcTemplate jdbcTemplate = JdbcTemplateUtils.jdbcTemplate(); protected Serializable doCreate(Session session) { Serializable , sessionId); String sql = "insert into sessions(id, session) values(?,?)"; jdbcTemplate.update(sql, sessionId, SerializableUtils.serialize(session)); return session.getId(); //如果会话过期/停止 没必要再更新了 } String sql = "update sessions set session=? where id=?"; jdbcTemplate.update(sql, SerializableUtils.serialize(session), session.getId()); } protected void