比较笨的分页方法

Java：

sql += " order by id desc,addtime desc";
		System.out.println("sql="+sql);
		String tmp = this.getExpenseService().getCount("Expense", sql);
		
		if(tmp==null){
			tmp = "0";
		}
		String first = request.getParameter("first");
		String up = request.getParameter("up");
		String down = request.getParameter("down");
		String last = request.getParameter("last");
		String page = request.getParameter("page");
		
//		int count = Integer.valueOf(tmp);
		int count=Integer.parseInt(tmp);
		int max = 0;
		int pagePer=10;
		if (count % pagePer != 0) {
			max = count / pagePer + 1;
		} else {
			max = count / pagePer;
		}
		if (request.getParameter("page") == null) {
			page = "1";
		}
		int page2 = Integer.parseInt(page) - 1;
		if (down != null) {
			page2 += 1;
		}
		if (up != null) {
			page2 -= 1;
		}
		if (first != null) {
			page2 = 0;
		}
		if (last != null) {
			page2 = max - 1;
		}
		if (page2 > max - 1) {
			page2 = max - 1;
		}
		if (page2 < 0) {
			page2 = 0;
		}
		if (count < pagePer) {
			page2 = 0;
		}
		List list = this.getExpenseService().getListByHQL("Expense",page2*pagePer,pagePer,sql);
		System.out.println("list.size="+list.size());
		request.setAttribute("page", page2 + 1 + "");
		request.setAttribute("totel", count + "");
		request.setAttribute("list", list);

html:

<%
				String pager = (String) request.getAttribute("page");
				String totel = (String) request.getAttribute("totel");
				String total = (String) request.getAttribute("total");
				if (pager == null) {
					pager = "1";
				}
				if (totel == null) {
					totel = "0";
				}
				if (total == null) {
					total = "0";
				}
				%>
				<table width="80%" border="0" cellpadding="0" cellspacing="0" bordercolor="#4DB0E7"  align="center">
					<tr bgcolor="#FFFFFF">
						<td width="17%">总记录 <font color='red' ><%=totel%></font> 条 
							<input class="button_y" name="first" type="submit" value="首页">
							<input class="button_y" name="up" type="submit" value="上一页"> 
							<input class="button_y" name="down" type="submit" value="下一页"> 
							<input class="button_y" name="last" type="submit" value="末页">
						</td>
						<td width="17%">当前页为第 
							<input style="text-align: center" type="text" size="2" name="page" value=<%=pager%> readonly="readonly" /> &nbsp页
						</td>
					</tr>
				</table>