String id_String=request.getParameter("id"); //System.out.println(id); int id = Integer.parseInt(id_String); ArticleDao_news dao = new ArticleDao_news(); if(id==0) { id=1; } LastID listid= dao.findLastID(); //总记录行数/每页数量向上取整 +1 得到页数 //如果目标页数大于页数则禁止翻页 if(id>Math.ceil(listid.getId()/2)+1) { id =id-1; } List<Article> list =dao.Pagingquery(id); request.setAttribute("articles", list); request.setAttribute("page", id); request.getRequestDispatcher("news-column-cn.jsp").forward(request, response);