请求解释request.setAttribute(四个参数)解决办法

请求解释request.setAttribute(四个参数)
public void findVoteInfo(HttpServletRequest request){

NewsCenterDAO dao = NewsCenterDAO.getNewsCenterDAO();

StringBuffer sql = new StringBuffer("from WebVote order by createDate desc");

Object[] obj = new Object[0];

request.setAttribute(PageUtil.DATANAME, dao.find(PageUtil.getBaseParam(request), sql.toString(), obj));

}

------解决方案--------------------
OH,兄弟，请你看仔细一点，这是四个参数？再说了request.setAttribute有4个参数的方法？？？
request.setAttribute(PageUtil.DATANAME, dao.find(PageUtil.getBaseParam(request), sql.toString(), obj));
这明明是两个好不好