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 --> cptry {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;}}