Spring Hibernate实现分页功能

2024-07-13 10:07:33

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本实例采用Spring+Hibernate实现简单的分页功能，供大家参考，具体内容如下

最关键的是运用Hibernate的query里面的两个方法：

query.setFirstResult((p.getPage()-1)*p.getRows()); 指定从那个对象开始查询，参数的索引位置是从0开始的。

query.setMaxResults(p.getRows()); 分页时，一次最多产寻的对象数主要实现类：

package com.paging;import java.util.List;import javax.annotation.Resource;import org.hibernate.Query;import org.hibernate.SessionFactory;import com.user.User;import sun.nio.cs.US_ASCII;public class Paging { final int num=3; @Resource SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; }   public List<User> paging(int index) {  String hql = "from User"; Query query = sessionFactory.getCurrentSession().createQuery(hql); query.setFirstResult((index-1)*num); query.setMaxResults(num);  return query.list();  }    }

web层:

package com.web;import java.util.List;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.paging.Paging;import com.user.User;@Controller@RequestMapping("/Page")public class Web { @Resource Paging paging; public void setPaging(Paging paging) { this.paging = paging; }   @RequestMapping("/page") public String page(Model model,int index) { List<User> list = paging.paging(index); model.addAttribute("list", list); return "index";   } }

jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>" rel="external nofollow" >  <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0">  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css" rel="external nofollow" > --> </head>  <body> <h1><a href="/Paging/Page/page?index=1" rel="external nofollow" >1</a></h1> <h1><a href="/Paging/Page/page?index=2" rel="external nofollow" >2</a></h1> <h1><a href="/Paging/Page/page?index=3" rel="external nofollow" >3</a></h1>  <c:if test="${!empty list }"> <c:forEach items="${list}" var="list">  ${list.name} ${list.adderss}        </c:forEach> </c:if>  </body></html>

因为是简单例子所以界面就很简陋了。

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