SpringData JPA查询分页demo

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SpringData JPA 的 PagingAndSortingRepository接口已经提供了对分页的支持，查询的时候我们只需要传入一个 org.springframework.data.domain.Pageable

接口的实现类,指定PageNumber和pageSize即可

springData包中的 PageRequest类已经实现了Pageable接口，我们可以直接使用下边是部分代码：

DAO：

package com.jiaoyiping.jdjy.sourcecode.dao;import com.jiaoyiping.jdjy.sourcecode.bean.SourceCode;import org.springframework.data.repository.PagingAndSortingRepository;/** * Created with IntelliJ IDEA. * User: 焦一平 * Date: 14-11-20 * Time: 下午11:18 * To change this template use File | Settings | File Templates. */public interface SourceCodeDao extends PagingAndSortingRepository<SourceCode, String> {}

service：

package com.jiaoyiping.jdjy.sourcecode.service;import com.jiaoyiping.jdjy.sourcecode.bean.SourceCode;import com.jiaoyiping.jdjy.sourcecode.dao.SourceCodeDao;import org.apache.solr.client.solrj.SolrServerException;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.Page;import org.springframework.data.domain.PageRequest;import javax.transaction.Transactional;import java.io.IOException;import java.sql.Timestamp;import java.util.List;/** * Created with IntelliJ IDEA. * User: 焦一平 * Date: 14-11-20 * Time: 下午11:24 * To change this template use File | Settings | File Templates. */public class SourceCodeService {    @Autowired    private SourceCodeDao sourceCodeDao;public Page<SourceCode> getSourceCode(int pageNumber,int pageSize){        PageRequest request = this.buildPageRequest(pageNumber,pageSize);        Page<SourceCode> sourceCodes= this.sourceCodeDao.findAll(request);        return sourceCodes;    }　　//构建PageRequest    private PageRequest buildPageRequest(int pageNumber, int pagzSize) {        return new PageRequest(pageNumber - 1, pagzSize, null);    }}

controller：

package com.jiaoyiping.jdjy.sourcecode.controller;import com.jiaoyiping.jdjy.sourcecode.Const;import com.jiaoyiping.jdjy.sourcecode.bean.SourceCode;import com.jiaoyiping.jdjy.sourcecode.service.SourceCodeService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.domain.Page;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Created with IntelliJ IDEA. * User: 焦一平 * Date: 14-11-20 * Time: 下午11:22 * To change this template use File | Settings | File Templates. */@Controller@RequestMapping(value = "/sourcecode")public class SourceCodeController {    @Autowired    private SourceCodeService sourceCodeService;        @RequestMapping(value = "list")    public ModelAndView listSourceCode(HttpServletRequest request, HttpServletResponse response){        String pageNumberStr=request.getParameter("pageNumber");        if(pageNumberStr==null ||"".equals(pageNumberStr)){            pageNumberStr="1";        }        int pageNumber = Integer.parseInt(pageNumberStr);        int pageSize = Const.PAGE_SIZE;        ModelAndView modelAndView = new ModelAndView();        modelAndView.setViewName("/sourcecode/listSourceCode");        Page<SourceCode> sourceCodes = this.sourceCodeService.getSourceCode(pageNumber, pageSize);        modelAndView.addObject("sourceCodeList",sourceCodes.getContent());        modelAndView.addObject("totalPageNumber",sourceCodes.getTotalElements());        modelAndView.addObject("pageSize",pageSize);        return modelAndView;    }}

前端分页：

前端分页组件我们使用bootstrap提供的分页组件：

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><%--  Created by IntelliJ IDEA.  User: 焦一平  Date: 2014/12/27  Time: 9:57  To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><%  String basePath = request.getContextPath();  String MethodURL=basePath+"/sourcecode/list.action?pageNumber=";%><!DOCTYPE html><html lang="en"><head>  <meta charset="utf-8"/>  <title>源代码列表</title>  <link href="<%=basePath%>/resources/assets/css/bootstrap.min.css" rel="stylesheet"/>  <script type="text/javascript" src="<%=basePath%>/resources/js/jquery/jquery.js"></script>  <script type="text/javascript">    $(document).ready(function(){      var totalNumber = Number(${totalPageNumber});      var pageSize = Number(${pageSize});      var pageCount = totalNumber/pageSize;      var html = "";      for(var i = 0;i<pageCount;i++){        var link_Url = "<li><a href=\"<%=MethodURL%>"+(i+1)+"\">"+(i+1)+"</a></li>";        html += link_Url;      }      var fenyeDiv = document.getElementById("link");      fenyeDiv.innerHTML=html;    });  </script></head><body><a href="#" class="list-group-item active">  源代码列表</a>    <c:forEach items="${sourceCodeList}" var="sourceCode">      <a href="<%=request.getContextPath()%>/sourcecode/detail.action?id=<c:out value="${sourceCode.id}" />" class="list-group-item"><c:out value="${sourceCode.title}" /></a>    </c:forEach><!-- 列表分页的DIV,由JS动态填充内容--><ul class="pagination pagination-lg" id="link"></ul><br></body></html>

最终结果如下：

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