public UserDO findUserById(Long userId) {
        Assert.assertNotNull(userId);
        return (UserDO) getSqlMapClientTemplate().queryForObject("findUserById", userId);
    }
TODO Comment of IbatisUserDAO

@author simon
manager/biz/src/main/java/com/alibaba/otter/manager/biz/user/dal/ibatis/IbatisUserDAO.java