HotJava

package  dao;

import  org.hibernate.cfg. * ;
import  org.hibernate. * ;

public   class  MySessionFactory  ... {
     private   static  Configuration config = null ;
     private   static  SessionFactory sf = null ;
     private  MySessionFactory() ... {
        config = new  Configuration().configure();
        sf = config.buildSessionFactory();
    }
    
     public   static  SessionFactory getSessionFactory() ... {
         if (sf == null ) ... {
             new  MySessionFactory();
        }
         return  sf;
    }
    
}

package  dao;

import  java.util.List;

import  org.hibernate.Query;
import  org.hibernate.Session;
import  org.hibernate.SessionFactory;
import  org.hibernate.Transaction;

public   class  pageList  ... {
     //  分页实现代码:
     //  得到总页数 pagesize为一个页面显示的记录数
     public   int  getTotalPage(String hql,  int  pagesize)  ... {
        SessionFactory sf  =  MySessionFactory.getSessionFactory();
        Session session  =  sf.openSession();
        Transaction ts  =  session.beginTransaction();
        Query query  =  session.createQuery(hql);
        List list  =  query.list();
         int  totalrs  =  list.size();
         int  totalpage  =   0 ;
         if  (totalrs  %  pagesize  >   0 )  ... {
            totalpage  =  totalrs  /  pagesize  +   1 ;
        }   else   ... {
            totalpage  =  totalrs  /  pagesize;
        }
        ts.commit();
        session.close();
         return  totalpage;
    }

     //  分页list
     public  List getObject(String hql,  int  page,  int  pagesize)  ... {
         if  (page  <   1 )page  =   1 ;
        SessionFactory sf  =  MySessionFactory.getSessionFactory();
        Session session  =  sf.openSession();
        Transaction ts  =  session.beginTransaction();
        Query query  =  session.createQuery(hql);
        query.setFirstResult(page  *  pagesize  -  pagesize);
        query.setMaxResults(pagesize);
        List list  =  query.list();
        ts.commit();
         //  session.close();
         return  list;
    }

     //  分页代码完
}

<% ... @ page language = " java "  contentType = " text/html; charset=GBK "
    pageEncoding = " GBK " %>
<% ... @ page import = " dao.*,po.*,java.util.* " %>
<% ... @ taglib uri = " http://jakarta.apache.org/struts/tags-bean "
    prefix = " bean " %>
<% ... @ taglib uri = " http://jakarta.apache.org/struts/tags-html "
    prefix = " html " %>
<% ...
     String  nowpage  =  request.getParameter( " page " );

//如果请求业面为空或第一次访问时，页面设为1
     if  (nowpage  ==   null  || nowpage.equals( "" ))nowpage  =   " 1 " ;

//将nowpage转为整型
     int  mypage  =   Integer .parseInt(nowpage);
     if  (mypage  <=   0 )mypage  =   1 ;

//页面记录数设为10
     int  pagesize  =   10 ;
     String  hql  =   " from ExamStudent " ;
    pageList pl  =   new  pageList();
     int  totalpage  =  pl.getTotalPage(hql, pagesize);

//当请求页面大于总页数，则将当前请求页面设为最大页数
     if  (mypage  >  totalpage)mypage  =  totalpage;
    ArrayList list  =  (ArrayList) pl.getObject(hql, mypage,pagesize);
    Iterator it  =  list.iterator();
%>
< html >
< head >
< title > JSP for AddStudentForm form </ title >
</ head >
< body >
< table  border ="1" >
     < tr >
         < td > 学号 </ td >
         < td > 姓名 </ td >
         < td > 性别 </ td >
         < td > 电话 </ td >
         < td  colspan ="2" > 操作 </ td >
     </ tr >
     <% ...
             while  (it.hasNext()) {
            ExamStudent es  =  (ExamStudent) it.next();
     %>
     < tr >
         < td > <% = es.getStudentClassid() %> </ td >
         < td > <% = es.getStudentName() %> </ td >
         < td > <% = es.getStudentSex() %> </ td >
         < td > <% = es.getStudentTel() %> </ td >
         < td >< a  href ="updateStudent.jsp?id=<%=es.getStudentId()%>" > 修改 </ a ></ td >
         < td >< a  href ="/exam/deleteStudent?id=<%=es.getStudentId()%>" > 删除 </ a ></ td >
     </ tr >
     <% ...
        }
        list.clear();
     %>
     < tr >
         < td  colspan ="6" >< a  href ="addStudent.jsp?page=1" > 首页 </ a > || < a
             href ="addStudent.jsp?page=<%=mypage-1%>" > 上一页 </ a > || < a
             href ="addStudent.jsp?page=<%=mypage+1%>" > 下一页 </ a > || < a
             href ="addStudent.jsp?page=<%=totalpage%>" > 末页 </ a ></ td >
     </ tr >
</ table >
</ body >
</ html >