web分页代码

// 当前页数int page;//从前台获取当前页数,进行判断赋值Object currentPageObj = session.getAttribute("page");if (currentPageObj == null) {page = 1;} else {page = (Integer) currentPageObj;}//根据前台的页数的增减，后台进行同步操作String parameter = request.getParameter("flag");System.out.println(parameter);if (parameter != null) {if (parameter.equals("U")) {page--;} else {page++;}}TopicServer server = new TopicServer();// 获取登录用户的贴子ArrayList<TopicBean> list = server.getMsg(userName, page);if (session.getAttribute("countPage") == null) {// 获取总页数，并保存到session中int allPage = server.getPostListAllPage((String) session.getAttribute("userName"));session.setAttribute("allPage", allPage);}session.setAttribute("page", page);// 保存登录用户的信息session.setAttribute("msgList", list);