Struts+Hibernate+jsp页面，实现分页-白红宇

Struts+Hibernate+jsp页面，实现分页

阅读量：4951 次

发布时间：2019-06-11

本文共 3384 字，大约阅读时间需要 11 分钟。

dao层代码

package com.hanqi.dao;import java.util.ArrayList;import java.util.List;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import com.hanqi.utility.USer;public class USerDAO {        private Configuration cfg = null ;        private ServiceRegistry sr = null ;                private SessionFactory sf = null ;        private Session se = null ;        Transaction ts = null ;                        public USerDAO()        {            //初始化Hibernate            cfg = new Configuration().configure() ;                        sr = new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build() ;                    }                public void init()        {            sf = cfg.buildSessionFactory(sr) ;                        se = sf.openSession() ;                        ts = se.beginTransaction() ;        }                        public void destory()        {            ts.commit() ;                         se.close() ;                        sf.close() ;         }                                //查询列表        public List
     
       getAll(int page)        {            List
      
        list = new ArrayList<>() ;                        init() ;                         //设置每页两行及起始页            list = se.createQuery("from USer").setMaxResults(2)                        .setFirstResult((page-1)*2).list() ;                        destory();                        return list;        }}

jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
     Insert title here添加用户
用户列表

<%@page import="com.hanqi.utility.USer"%><%@page import="java.util.List"%><%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
     Insert title here<%List
     
       list = (List
      
       )request.getAttribute("selectuser") ;for(USer us : list ){    out.print(us + "
           【删除】"                        +"
           【修改】"                            +"
       
") ;}int pages = Integer.parseInt(request.getParameter("pages")) ;%><% if(list.size()==0){response.getWriter().write("页码超出范围") ;                                response.setHeader("refresh", "3;url=selectUSer?pages=1") ;}else{ %><%%>
       上一页
       下一页<%} %>

Struts文件配置


             
                             
      
       /WEB-INF/pages/fail.jsp
                              
      
       /WEB-INF/pages/selectUSer.jsp

service层方法

public String selectUSer()    {        String rtn = "fail" ;                try        {
    //得到原生request            HttpServletRequest hsr = ServletActionContext.getRequest() ;                        int page = Integer.parseInt(hsr.getParameter("pages")) ;                        //page = Integer.parseInt(hsr.getParameter("pagess")) ;            //调用查询的方法            List
     
       list = new UserService().getAll(page);                        hsr.setAttribute("pages", page+1);                        hsr.setAttribute("selectuser", list);                    rtn = "success" ;        }catch(Exception e)        {            e.printStackTrace();        }                return rtn;    }

转载于:https://www.cnblogs.com/ydymz/p/8329288.html

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