ssh分页模版

 

 ssh分页模版，只提供代码，不提供解释。另外，请注意所以类的jar包都没有导入。也不是完整的代码。请自行调试。

 

一、通用JSP分页插件：

<%@ page language="java" pageEncoding="UTF-8"%> <% // 进行乱码处理 request.setCharacterEncoding("utf-8") ; %> <% // 页面连接路径 String jspUrl = null ; // 定义如下分页变量 // 1、定义没页要显示的记录数，默认是10条每页 int lineSize = 10 ; // 2、定义一个当前是第几页 int currentPage = 1 ; // 计算出总页数 int pageSize = 0 ; // 总记录数 / 每页显示的记录数 int allRecorders = 0 ; // 加入查询关键字变量 String keyWord = null ; // 加入一个检索标记 String searchFlag = "F" ; %> <% // 需要从外面接收以下参数 // 当前页、每页显示的记录数、总记录数、查询关键字、连接地址 jspUrl = request.getParameter("jspUrl") ; keyWord = request.getParameter("keyWord") ; searchFlag = request.getParameter("searchFlag") ; try { lineSize = Integer.parseInt(request.getParameter("lineSize")) ; currentPage = Integer.parseInt(request.getParameter("currentPage")) ; allRecorders = Integer.parseInt(request.getParameter("allRecorders")) ; } catch(Exception e) {} %> <% // 计算总页数 pageSize = (allRecorders+lineSize-1)/lineSize ; %> <mce:script language="javaScript"><!-- function openPage(curpage) { document.spage.cp.value = curpage ; // alert(cupage) ; document.spage.submit() ; } function selOpenPage() { document.spage.cp.value = document.spage.selpage.value ; document.spage.submit() ; } // --></mce:script> <form name="spage" action="<%=jspUrl%>"> <input type="hidden" name="status" value="<%="T".equals(searchFlag)?"selectlike":"selectall"%>"> <% if("T".equals(searchFlag)) { %> 输入查询关键字：<input type="text" name="kw" value="<%=keyWord.equals("null")?"":keyWord%>"> <input type="submit" value="查询"> <br> <br> <% } %> <% if(allRecorders>0) { %> <input type="button" value="首页" onClick="openPage(1)" <%=currentPage==1?"disabled":""%>> <input type="button" value="上一页" onClick="openPage(<%=currentPage-1%>)" <%=currentPage==1?"disabled":""%>> <input type="button" value="下一页" onClick="openPage(<%=currentPage+1%>)" <%=currentPage==pageSize?"disabled":""%>> <input type="button" value="尾页" onClick="openPage(<%=pageSize%>)" <%=currentPage==pageSize?"disabled":""%>> <input type="hidden" name="cp" value=""> <font color="red" size="5"><%=currentPage%></font> / <font color="red" size="5"><%=pageSize%></font> 跳转到 <select name="selpage" onChange="selOpenPage()"> <% for(int x=1;x<=pageSize;x++) { %> <option value="<%=x%>" <%=currentPage==x?"selected":""%>><%=x%></option> <% } %> </select> 页 <% } %> </form>

 

 

 二、在需要分页的JSP页面插入如下代码：（<%=jspUrl%> 根据实际情况填写实际的地址 ）

 <jsp:include page="split_page.jsp"> <jsp:param name="jspUrl" value="<%=jspUrl%>" /> <jsp:param name="lineSize" value="<%=request.getAttribute("lineSize")%>" /> <jsp:param name="allRecorders" value="<%=request.getAttribute("allRecorders")%>" /> <jsp:param name="keyWord" value="<%=request.getAttribute("keyWord")%>" /> <jsp:param name="currentPage" value="<%=request.getAttribute("currentPage")%>" /> <jsp:param name="searchFlag" value="T" /> </jsp:include>

 

三、struts事例：将数据保存到页面中进行显示的设置

public class PersonAction extends DispatchAction { /* * Generated Methods */ private PersonDAO persondao; public ActionForward selectall(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { PersonForm personForm = (PersonForm) form; // 每页显示10行记录 int lineSize = 10; // 当前是第几页 int currentPage = 1; // 全部的记录数 int allRecorders = 0; // 全部的记录数 List all = null; // 每次需要接收currentPage --> cp try { currentPage = Integer.parseInt(request.getParameter("cp")); } catch (Exception e) { } // 求出全部的记录数 try { allRecorders = persondao.getAllCount(); all = persondao.queryAll(currentPage, lineSize); } catch (Exception e) { e.printStackTrace(); } // 将数据保存到页面中进行显示 request.setAttribute("currentPage", currentPage); request.setAttribute("lineSize", lineSize); request.setAttribute("allRecorders", allRecorders); request.setAttribute("all", all); return mapping.findForward("list"); } }

 

 

 四、从数据库提取数据的类。

 public class PersonDAOImpl extends HibernateDaoSupport implements PersonDAO { public int getAllCount() throws Exception { int count = 0; String hql = "SELECT COUNT(p.id) from Person AS p"; Query q = this.getSession().createQuery(hql); List all = q.list(); if (all.size() > 0) { count = (Integer) all.get(0); } return count; } public List queryAll(int currentPage, int lineSize) throws Exception { List<Person> all = new ArrayList<Person>(); String hql = "FROM Person AS p"; Query q = this.getSession().createQuery(hql); q.setFirstResult((currentPage - 1) * lineSize); q.setMaxResults(lineSize); all = q.list(); return all; } }