本文实例为大家分享了android九宫格图片展示的具体代码，供大家参考，具体内容如下
推荐视频：尚硅谷spring data jpa视频教程，一学就会，百度一下就有。
后台代码：在dao层继承spring data jpa的pagingandsortingrepository接口实现的 （实现方法主要在sbglserviceimpl.java类中）
前台表现：用kkpaper表现出来
实现效果：
1、实体类
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package com.jinhetech.yogurt.sbgl.entity;import java.io.serializable;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.id;import javax.persistence.primarykeyjoincolumn;import javax.persistence.sequencegenerator;import javax.persistence.table;import org.hibernate.annotations.genericgenerator;import org.springframework.cache.annotation.cacheable;@entity@table(name="sys_sbgl")@primarykeyjoincolumn(name = "sbbm")@cacheable(value = "basecache")public class sbgl implements serializable{ private static final long serialversionuid = -1423899016746755470l; @id private string sbbm; private string sbmc; private string sblx; private string sssx; private string ssjd; private string azsj; private string azry; private string sbzt; private string sbjd; private string sbwd; private string wxlxr; private string wxlxdh; private string sbywxcs; private string jzpylyz; private string mqsbcyr; private string bzsm; //setter、getter方法省略 } |
2、jsp页面，看最下面的分页组件（kkpaper）
resultmap集合是下面controller中最后查询和分页后获得的所有数据信息，resultmap.resultlist：resultlist是map集合的属性，里面存着<key,value>数据
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<%@ page language="java" import="java.util.*" pageencoding="utf-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %><%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %><%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %><!doctype html><c:set var="ctx" value="${pagecontext.request.contextpath}" scope="session"/><html><head> <title>设备管理</title> <!-- ztree需要的样式和js --> <link rel="stylesheet" href="${ctx }/yogurtresource/assembly/ztree/css/ztreestyle.css" rel="external nofollow" type="text/css"> <script type="text/javascript" src="${ctx }/yogurtresource/assembly/ztree/jquery.ztree.core-3.5.js"></script> <script type="text/javascript" src="${ctx }/yogurtresource/assembly/ztree/jquery.ztree.excheck-3.5.js"></script> <!-- 验证框架 --> <script type="text/javascript" src="${ctx }/yogurtresource/assembly/yogurt/user/formvalidate.js"></script> <!-- 修改表单验证错误提示样式 --> <style type="text/css"> .table-bordered-ul li{ margin:0 5px; float:left} label.error { padding-left: 16px; padding-bottom: 2px; font-weight: bold; color: #f00; } </style> <script type="text/javascript"> function console(consoletag, userid, statetag) { // 添加用户。 if("add" == consoletag) { $('#formid').prop("action", "${ctx}/sbgl/sbgl_add_list"); } } /** * 搜索。 */ function search() { $('#searchform').submit(); } </script> </head><body> <div class="clear"> <div class="panel panel-default yogurt_route" id="yogurt_route"> <a href="${ctx }/home/home_list" rel="external nofollow" >首页</a> > <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="navigate();">设备管理</a> > 设备列表 </div> </div> <ul id="bqnum"> <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="navigate();">导航</a> </li> <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="orgtree();">机构</a> </li> </ul> <!-- 根据条件查询 --> <div class="clear ppd10" style="line-height:32px"> <form action="${ctx }/sbgl/sbgl_list" method="post" id="searchform"> <div style="float:left; width:200px"> 设备名称： <input type="text" name="sersbmc" id="sersbmc" > </div> <div class="floatleft"> 设备类型： <input type="text" name="sersblx" id="sersblx" > </div> <div class="floatleft"> 所属市县： <input type="text" name="sersssx" id="sersssx" > </div> <div class="floatleft"> 基地名称： <input type="text" name="serjdmc" id="serjdmc" > </div> <div class="floatleft"> 设备状态： <select class="form-control" style="display:inline-block; width:80px" name="sersbzt" id="sersbzt"> <option value="">全部</option> <option value="y">正常</option> <option value="n">异常</option> </select> </div> <button type="submit" class="btn btn-success yogurt_search_button" onclick="search();"> <img src="${ctx }/yogurtresource/images/panel/search.png" width="18" height="18" /> </button> </form> </div> <!-- 新增、删除 --> <div class="panel panel-default" style="margin-top:10px"> <div class="yogurt_panel_title_core"> <span class="state_bold">共查询出数据结果：<span class="state_red">${resultmap.totalnum}</span>条</span> </div> <div class="more_core3"> <!-- <button type="button" class="btn btn-success yogurt_search_button2" onclick="console('add','');">新增设备</button> --> <button type="button" class="btn btn-success yogurt_search_button2" onclick="window.location.href='${ctx }/sbgl/sbgl_add_list' ">新增设备</button> <button type="button" class="btn btn-success yogurt_search_button2" onclick="console('delete','');">删除设备</button> </div> </div> <!-- 列表 --> <div class="yogurt_elementsbox_core clear"> <div class="yogurt_elementsbox_table_article" id="yogurt_elementsbox_table_article"> <table id="tablebody" border="0" cellspacing="0" cellpadding="0" class="table yogurt_elementsbox_table"> <thead> <tr class="yogurt_tab_back" onmouseover="this.classname='yogurt_tab_trhover'" onmouseout="this.classname='yogurt_tab_back'"> <th width="3%"><input type="checkbox" onclick="allchecked(this)"></th> <th width="10%">设备名称</th> <th width="10%">设备类型</th> <th width="10%">所属市县</th> <th width="10%">基地名称</th> <th width="10%">设备状态</th> <th width="10%">维修联系人</th> <th width="10%">联系电话</th> <th width="10%">设备持有人</th> <th width="17%" style="text-align:center;">操作</th> </tr> </thead> <tbody id="usertb"> <c:foreach var="sbgl" items="${resultmap.resultlist}" varstatus="status"> <tr> <td><input type="checkbox" ></td> <td>${sbgl.sbmc }</td> <td>${sbgl.sblx }</td> <td>${sbgl.sssx }</td> <td>${sbgl.ssjd }</td> <td>${sbgl.sbzt }</td> <td>${sbgl.wxlxr }</td> <td>${sbgl.wxlxdh }</td> <td>${sbgl.mqsbcyr }</td> <td style="text-align:center"> <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="console('update', '${user.userid}')"> 修改</a> <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="showroles('${user.userid}')">| 查看</a> </td> </tr> </c:foreach> </tbody> </table> </div> </div> <!--分页--> <div style="clear:both; height:50px"> <!--加载分页组件--> <div id="kkpager"></div> <script type="text/javascript"> var param = ""; $(function() { var totalpage = "${resultmap.totalpage}"; var totalrecords = "${resultmap.totalnum}"; var pagesize = "${resultmap.pagesize}"; var pagenum = parseint("${resultmap.pagenum}") + 1; //初始化分页控件 //有些参数是可选的，比如lang，若不传有默认值 kkpager.init({ pno: pagenum, //总页码 total: "${resultmap.totalpage}", //总数据条数 totalrecords: totalrecords, //链接前部 hrefformer: 'sbgl_list', //链接尾部 hreflatter: '', getlink: function(n) { return getinitparam() + "&pagenum=" + n + "&pagesize=" + pagesize; }, lang: { prepagetext: '上一页', nextpagetext: '下一页', totalpagebeforetext: '共', totalpageaftertext: '页', totalrecordsaftertext: '条数据', gopagebeforetext: '转到', gopagebuttonoktext: '确定', gopageaftertext: '页', buttontipbeforetext: '第', buttontipaftertext: '页' } }); //生成 kkpager.generpagehtml(); $('#mykkpagerselect').val(pagesize); }); function returnoption(pagesize) { window.location.href = getinitparam() + "&pagenum=1&pagesize=" + pagesize; } function getinitparam() { var sersbmc = $('#sersbmc').val(); var sersblx = $('#sersblx').val(); var sersssx = $('#sersssx').val(); var serjdmc = $('#serjdmc').val(); var sersbzt = $('#sersbzt').val(); var attr = "?sersbmc=" + encodeuri(encodeuri(sersbmc)) + "&sersblx=" + sersblx + "&sersssx=" + sersssx + "&serjdmc=" + serjdmc+ "&sersbzt=" + sersbzt; return "${ctx}/sbgl/sbgl_list" + attr; } </script> <!--分页结束--> </div> <!--分页end--> </body></html> |
3、controller（看红色字体下面那个处理方法）
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package com.jinhetech.yogurt.sbgl.controller;import java.util.arraylist;import java.util.hashmap;import java.util.linkedhashset;import java.util.list;import java.util.map;import java.util.set;import javax.annotation.resource;import org.apache.shiro.authz.annotation.requirespermissions;import org.apache.shiro.authz.annotation.requiresroles;import org.springframework.beans.factory.annotation.autowired;import org.springframework.stereotype.controller;import org.springframework.ui.model;import org.springframework.web.bind.annotation.modelattribute;import org.springframework.web.bind.annotation.requestmapping;import org.springframework.web.bind.annotation.requestmethod;import org.springframework.web.bind.annotation.requestparam;import org.springframework.web.bind.annotation.responsebody;import org.springframework.web.servlet.modelandview;import org.springframework.web.servlet.mvc.support.redirectattributes;import org.springframework.web.servlet.view.redirectview;import com.jinhetech.yogurt.dictionary.crop.service.impl.cropserviceimpl;import com.jinhetech.yogurt.func.entity.func;import com.jinhetech.yogurt.func.service.funcservice;import com.jinhetech.yogurt.menu.entity.menu;import com.jinhetech.yogurt.menu.service.menuservice;import com.jinhetech.yogurt.menu.util.menuutil;import com.jinhetech.yogurt.organization.entity.orgtable;import com.jinhetech.yogurt.organization.service.orgservice;import com.jinhetech.yogurt.organization.util.orgutil;import com.jinhetech.yogurt.role.entity.role;import com.jinhetech.yogurt.role.service.roleservice;import com.jinhetech.yogurt.sbgl.dao.sbgldao;import com.jinhetech.yogurt.sbgl.entity.sbgl;import com.jinhetech.yogurt.sbgl.service.sbglservice;import com.jinhetech.yogurt.sbgl.util.sbglutil;import com.jinhetech.yogurt.user.entity.user;import com.jinhetech.yogurt.user.entity.userinfo;import com.jinhetech.yogurt.user.service.userservice;import com.jinhetech.yogurt.user.util.userutil;import com.jinhetech.yogurt.util.base.basecontroller;import com.jinhetech.yogurt.util.base.constants;import com.jinhetech.yogurt.util.common.textutils;import com.jinhetech.yogurt.util.common.uuidhexgenerator;/** * 系统用户管理控制类 * * @author wang hao * @version 1.0 2014-02-28 初版 */@controller("sbglcontroller")@requestmapping("/sbgl")public class sbglcontroller extends basecontroller {// @resource(name = "sbgldao")// private sbgldao sbgldao; @resource(name = "sbglservice") private sbglservice sbglservice; /** * 平台权限管理导航*/ @requestmapping("/home_list") public modelandview home() { return new modelandview("iot/permis/permis_home"); } /** * 查询设备信息列表(支持分页和多条件查询)。 * */ @requestmapping("sbgl_list") @requiresroles("sbgl/sbgl_list") public string getuserlist(model model) throws exception { //显示设备列表// list<sbgl> lst=new arraylist<sbgl>();// lst=(list<sbgl>) sbglservice.getall(); map<string, object> resultmap = null; // 查询表单或分页保持请求时 请求参数的接收 map<string, string> serargs = new hashmap<string, string>(); serargs = sbglutil.getselargstomap(request);//这个类在下面给出 resultmap = sbglservice.getuserbysearch(serargs, "wxlxdh"); model.addattribute("resultmap", resultmap);// model.addattribute("lst", lst); return "sbgl/sbgl_list"; } /** * 新增设备信息列表(支持分页和多条件查询)。 * * @author yangzhenghua 2014-5-28 * @throws exception */ @requestmapping("sbgl_add_list") @requiresroles("sbgl/sbgl_add_list") public string getaddlist(model model) throws exception { system.out.println("aaa"); model.addattribute("aaa","aaa"); model.addattribute("resultmap", "hello world"); return "sbgl/sbgl_add_list"; } /** * 保存、修改用户信息。 * * @author yangzhenghua 2014-5-28 * @throws exception */ @requestmapping("sbgl_save_list") @requiresroles("sbgl/sbgl_save_list") public modelandview savesbgl(sbgl sbgl) throws exception { string sbmc=request.getparameter("sbmc"); string sblx=request.getparameter("sblx"); string sssx=request.getparameter("sssx"); string ssjd=request.getparameter("ssjd"); string azsj=request.getparameter("azsj"); string azry=request.getparameter("azry"); string sbzt=request.getparameter("sbzt"); string sbjd=request.getparameter("sbjd"); string sbwd=request.getparameter("sbwd"); string wxlxr=request.getparameter("wxlxr"); string wxlxdh=request.getparameter("wxlxdh"); string sbywxcs=request.getparameter("sbywxcs"); string jzpylyz=request.getparameter("jzpylyz"); string mqsbcyr=request.getparameter("mqsbcyr"); string bzsm=request.getparameter("bzsm"); sbgl.setsbbm(uuidhexgenerator.generate()); sbgl.setsbmc(sbmc); sbgl.setsblx(sblx); sbgl.setsssx(sssx); sbgl.setssjd(ssjd); sbgl.setazsj(azsj); sbgl.setazry(azry); sbgl.setsbzt(sbzt); sbgl.setsbjd(sbjd); sbgl.setsbwd(sbwd); sbgl.setwxlxr(wxlxr); sbgl.setwxlxdh(wxlxdh); sbgl.setsbywxcs(sbywxcs); sbgl.setjzpylyz(jzpylyz); sbgl.setmqsbcyr(mqsbcyr); sbgl.setbzsm(bzsm); sbglservice.save(sbgl); return new modelandview(new redirectview("sbgl_list")); }} |
3.2、sbglutil.java
封装从前台传递过来的查询参数、前台传递过来的分页参数，都放到map集合serargs中
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package com.jinhetech.yogurt.sbgl.util;import java.util.arraylist;import java.util.hashmap;import java.util.list;import java.util.map;import java.util.map.entry;import javax.servlet.http.httpservletrequest;import javax.servlet.http.httpsession;import org.springframework.web.context.request.requestcontextholder;import org.springframework.web.context.request.servletrequestattributes;import com.jinhetech.yogurt.organization.entity.orgtable;import com.jinhetech.yogurt.report.entity.report;import com.jinhetech.yogurt.role.entity.role;import com.jinhetech.yogurt.user.entity.user;import com.jinhetech.yogurt.user.entity.userinfo;import com.jinhetech.yogurt.util.common.jsonutils;import com.jinhetech.yogurt.util.common.textutils;/** * 用户功能模块工具类。 * * @author yangzhenghua * @version v1.0 2014-5-16 初版 * */public class sbglutil { /** * 封装从前台传递过来的查询参数。 * * @author yangzhenghua * @date 2014-6-26 */ public static map<string, string> getselargstomap(httpservletrequest request) throws exception { map<string, string> serargs = new hashmap<string, string>(); string sersbmc = request.getparameter("sersbmc"); string sersblx = request.getparameter("sersblx"); string sersssx = request.getparameter("sersssx"); string serjdmc = request.getparameter("serjdmc"); string sersbzt = request.getparameter("sersbzt"); string pagenum = request.getparameter("pagenum") == null ? "1" : request.getparameter("pagenum"); string pagesize = request.getparameter("pagesize") == null ? "10" : request.getparameter("pagesize"); //serargs.put("serusername", java.net.urldecoder.decode(serusername == null ? "" : serusername, "utf-8")); serargs.put("sersbmc", sersbmc); serargs.put("sersblx", sersblx); serargs.put("sersssx", sersssx); serargs.put("serjdmc", serjdmc); serargs.put("sersbzt", sersbzt); serargs.put("pagenum", pagenum); serargs.put("pagesize", pagesize); return serargs; }} |
3.3、sbglservice.java
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package com.jinhetech.yogurt.sbgl.service;import java.util.list;import java.util.map;import org.springframework.stereotype.service;import org.springframework.transaction.annotation.transactional;import com.jinhetech.yogurt.sbgl.entity.sbgl;public interface sbglservice { public list<sbgl> getall() throws exception; public sbgl save(sbgl sbgl) throws exception; public map<string, object> getuserbysearch(map<string, string> serargs, final string sorttype) throws exception; } |
3.4、sbglserviceimpl.java (根据前台传递来的查询参数进行查询，获得的结果数据放到page objpage参数)
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package com.jinhetech.yogurt.sbgl.service.impl;import java.util.arraylist;import java.util.list;import java.util.map;import javax.annotation.resource;import javax.persistence.criteria.criteriabuilder;import javax.persistence.criteria.criteriaquery;import javax.persistence.criteria.jointype;import javax.persistence.criteria.listjoin;import javax.persistence.criteria.predicate;import javax.persistence.criteria.root;import org.springframework.data.domain.page;import org.springframework.data.domain.pageable;import org.springframework.data.jpa.domain.specification;import org.springframework.stereotype.service;import org.springframework.transaction.annotation.transactional;import com.jinhetech.yogurt.role.entity.role;import com.jinhetech.yogurt.sbgl.dao.sbgldao;import com.jinhetech.yogurt.sbgl.entity.sbgl;import com.jinhetech.yogurt.sbgl.service.sbglservice;import com.jinhetech.yogurt.user.entity.userinfo;import com.jinhetech.yogurt.util.common.pageutils;import com.jinhetech.yogurt.util.common.textutils;@service("sbglservice")@transactionalpublic class sbglserviceimpl implements sbglservice{ @resource(name = "sbgldao") private sbgldao sbgldao; public list<sbgl> getall() throws exception{ return (list<sbgl>) this.sbgldao.findall(); } public sbgl save(sbgl sbgl) throws exception { return sbgldao.save(sbgl); } /** * 查询用户信息列表(支持分页和多条件查询)。 * * @author yangzhenghua 2014-6-19 */ public map<string, object> getuserbysearch(final map<string, string> serargs, final string sorttype) throws exception { // 获得分页对象pageable，并且在pageable中页码是从0开始，设定按照sorttype升序排列 pageable pageable = pageutils.buildpagerequest(integer.valueof(serargs.get("pagenum")), integer.valueof(serargs.get("pagesize")), sorttype); page<sbgl> objpage = sbgldao.findall(new specification<sbgl>() { public predicate topredicate(root<sbgl> root, criteriaquery<?> query, criteriabuilder cb) { list<predicate> lstpredicates = new arraylist<predicate>(); if (textutils.isnotblank(serargs.get("sersbmc"))) { lstpredicates.add(cb.like(root.get("sbmc").as(string.class), "%" + serargs.get("sersbmc") + "%")); } if (textutils.isnotblank(serargs.get("sersblx"))) { lstpredicates.add(cb.like(root.get("sblx").as(string.class), "%" + serargs.get("sersblx") + "%")); } if (textutils.isnotblank(serargs.get("sersssx"))) { lstpredicates.add(cb.like(root.get("sssx").as(string.class), "%" + serargs.get("sersssx") + "%")); } if (textutils.isnotblank(serargs.get("serjdmc"))) { lstpredicates.add(cb.like(root.get("jdmc").as(string.class), "%" + serargs.get("serjdmc") + "%")); } if (textutils.isnotblank(serargs.get("sersbzt"))) { lstpredicates.add(cb.equal(root.get("sbzt"), serargs.get("sersbzt"))); } predicate[] arraypredicates = new predicate[lstpredicates.size()]; return cb.and(lstpredicates.toarray(arraypredicates)); } }, pageable); return pageutils.getpagemap(objpage); } } |
3.4.1、pageutils.java(分页数据工具类)
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package com.jinhetech.yogurt.util.common;import java.util.hashmap;import java.util.map;import org.springframework.data.domain.page;import org.springframework.data.domain.pagerequest;import org.springframework.data.domain.sort;import org.springframework.data.domain.sort.direction;import com.jinhetech.yogurt.util.base.constants;/** * 分页数据工具类。 * * @author yangzhenghua * @version v1.0 2014-6-24 初版 * */public class pageutils { /** * 封装分页数据到map中。 */ public static map<string, object> getpagemap(page<?> objpage) { map<string, object> resultmap = new hashmap<string, object>(); resultmap.put(constants.page_result_list, objpage.getcontent()); // 数据集合 resultmap.put(constants.page_total_num, objpage.gettotalelements()); // 总记录数 resultmap.put(constants.page_total_page, objpage.gettotalpages()); // 总页数 resultmap.put(constants.page_num, objpage.getnumber()); // 当前页码 resultmap.put(constants.page_size, objpage.getsize()); // 每页显示数量 return resultmap; } /** * 创建分页请求。 * * @author yangzhenghua * @date 2014-7-14 * * @param pagenum 当前页 * @param pagesize 每页条数 * @param sorttype 排序字段 * @param direction 排序方向 */ public static pagerequest buildpagerequest(int pagenum, int pagesize, string sorttype, string direction) { sort sort = null; if (!textutils.isnotblank(sorttype)) { return new pagerequest(pagenum - 1, pagesize); } else if (textutils.isnotblank(direction)) { if (direction.asc.equals(direction)) { sort = new sort(direction.asc, sorttype); } else { sort = new sort(direction.desc, sorttype); } return new pagerequest(pagenum - 1, pagesize, sort); } else { sort = new sort(direction.asc, sorttype); return new pagerequest(pagenum - 1, pagesize, sort); } } /** * 创建分页请求(该方法可以放到util类中). */ public static pagerequest buildpagerequest(int pagenum, int pagesize, string sorttype) { return buildpagerequest(pagenum, pagesize, sorttype, null); } /** * 创建分页请求 * * @author yangzhenghua * @date 2014-11-12 * * @param pagenum * @param pagesize * @param sort * @return */ public static pagerequest buildpagerequest(int pagenum, int pagesize, sort sort) { return new pagerequest(pagenum - 1, pagesize, sort); } /** * 创建分页请求(该方法可以放到util类中). */ public static pagerequest buildpagerequest(int pagenum, int pagesize) { return buildpagerequest(pagenum, pagesize, null, null); }} |
4、dao（sbgldao.java）,对，只需要继承spring data jpa的pagingandsortingrepository接口，controller中调用其findall()方法
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package com.jinhetech.yogurt.sbgl.dao;import org.springframework.data.jpa.repository.jpaspecificationexecutor;import org.springframework.data.repository.crudrepository;import org.springframework.data.repository.pagingandsortingrepository;import org.springframework.stereotype.repository;import com.jinhetech.yogurt.sbgl.entity.sbgl;import com.jinhetech.yogurt.user.entity.userinfo;@repository("sbgldao")public interface sbgldao extends pagingandsortingrepository<sbgl, string>, jpaspecificationexecutor<sbgl> { } |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/Donnnnnn/p/6277872.html
