Spring中JDBC插入数据后获得该记录的ID

public   void  addForum( final  Forum forum) {
         final  String sql = "INSERT INTO t_forum(forum_name, forum_desc) VALUES(?,?)";
        KeyHolder keyHolder =  new  GeneratedKeyHolder();
        getJdbcTemplate().update( new  PreparedStatementCreator() {
             public  PreparedStatement createPreparedStatement(Connection conn) {
                PreparedStatement ps = conn.prepareStatement(sql);
                ps.setString(1, forum.getForumName());
                ps.setString(2, forum.getForumDesc());
                 return  ps;
            }
        }, keyHolder);
        forum.setForumId(keyHolder.getKey().intValue());
    }