優點： 1.通用性更好，給為頁碼寫一個類，更符合面向物件的思維 2.程式碼十分簡潔 缺點： 1.不能及使獲取資料庫中資料的變化 封裝進Dao物件，通過一個方法返回一個map，map裡有一個頁碼物件，還有一個頁面資料物件 public class FenyeService { private HibernateDao dao; public FenyeService() { dao = new HibernateDao(); } public Map getPageData(int page) { List products = null; try { products = dao.getProducts(page); } catch (Exception ex) { ex.printStackTrace(); } PageArgs pageArgs = dao.getPageArgs(); pageArgs.setPageNum(page); Map model = new HashMap(); model.put("list", products); model.put("pageArgs", pageArgs); return model; } } //頁碼類，省略了get/set方法 public class PageArgs { private int pageNum; private int pageSize; private long maxPage; private int prePage; private int nextPage; public void setPageNum(int pageNum) { this.pageNum = pageNum; prePage=pageNum-1<=1?1:pageNum-1; nextPage=(int) (pageNum + 1 >= maxPage ? maxPage : pageNum + 1); } } Servlet中封裝了service物件。 @WebServlet("/PageServlet") public class PageServlet extends HttpServlet { private FenyeService fenyeService; public PageServlet() { fenyeService = new FenyeService(); } //處理get或post請求 protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); int page = ServletRequestUtils.getIntParameter(request, "page", 1); Map model = fenyeService.getPageData(page); request.setAttribute("model", model); request.getRequestDispatcher("page.jsp").forward(request, response); } } 一個工具類 ublic class ServletRequestUtils { public static double getDoubleParameter(HttpServletRequest request, String param, double defVal) { String val = request.getParameter(param); try { double num = Double.parseDouble(val); return num; } catch (NumberFormatException Exception) { return defVal; } } public static int getIntParameter(HttpServletRequest request, String param, int defVal) { String val = request.getParameter(param); try { int num = Integer.parseInt(val); return num; } catch (NumberFormatException Exception) { return defVal; } } } JSP頁面 <!--頁面資料顯示--> <c:forEach items="${model['list']}" var="rec"> <tr> <td height="27">${rec.id}</td> <td>${rec.productName}</td> <td>${rec.price}</td> <td>${rec.unit}</td> <td>${rec.num}</td> <td>${rec.inDate}</td> <td>${rec.baozhiTime}</td> </tr> </c:forEach> <!--頁碼顯示--> <a href="PageServlet?page=1">第一頁</a> <a href="PageServlet?page=${model['pageArgs'].prePage}">上一頁</a> &nbsp;${model['pageArgs'].pageNum}/${model['pageArgs'].maxPage}&nbsp; <a href="PageServlet?page=${model['pageArgs'].nextPage}">下一頁</a> <a href="PageServlet?page=${model['pageArgs'].maxPage}">尾頁</a>