springmvc+java+mysql分页条件查询自学代码
jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <% 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%>"> <title>获得注册信息</title> <script type="text/javascript" src=\‘#\‘" /js/jquery-1.9.1.min.js"></script> <script type="text/javascript" src=\‘#\‘" /js/exportExcel.js"></script> <style type="text/css"> .table td{ text-align:center; height:28px; line-height:28px; padding:0 5px; font-size:12px; color:#2b2b2b; border-bottom:1px dashed #cbcbcb;} </style> </head> <body> id:<input type="text" name="id" id="id"> 姓名:<input type="text" name="name" id="name"> <input type="button" onclick="getRegInfo();" value="查询"> <input type="button" onclick="exportExcel()" value="导出数据"> <!--<form action="export.do" method="post"> <input type="submit" value="导出数据"> </form>--> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="table"> <tr id="tabTitle"></tr> <tbody id="tabBody" style="cursor:pointer"></tbody> </table> <div id="ttPage" class="page_bg"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="200"> </td> <td align="right"> 共 <span id="totalPage"></span>页 当前第<span id="currentPage"></span>页 共 <span id="totalCount"></span>条记录 每页 <select id="pageSize" name="pageSize" onchange="goto_page(‘changePage‘)"> <option value=‘10‘> 10 </option> <option value=‘50‘> 50 </option> <option value=‘100‘> 100 </option> </select> 条 <a onclick="goto_page(‘first‘)" style="cursor: pointer; color: blue">[首页]</a> <a onclick="goto_page(‘pre‘)" style="cursor: pointer; color: blue">[上一页]</a> <a onclick="goto_page(‘next‘)" style="cursor: pointer; color: blue">[下一页]</a> <a onclick="goto_page(‘last‘)" style="cursor: pointer; color: blue">[末页]</a> <label>跳转 <input id="page" name="page" type="text" style="border:solid 1px cornflowerblue;width:30px" /> <a onclick="goto_page(‘jump‘)" style="cursor: pointer; color: blue"> GO </a> </label> </td> </tr> </table> </div> </body> </html>
js:
$(document).ready(function(){ getRegInfo(); }); function getRegInfo(){ var id = $.trim($("#id").val()); var name = $.trim($("#name").val()); var rand = Math.random(); $.ajax( { url : "./pageExport.do", type : "GET", async : false, data: "id="+id+"&name="+encodeURI(encodeURI(name))+"&rand="+rand, // dataType : ‘json‘, //contentType : "application/x-www-form-urlencoded; charset=utf-8", success : function(data, textStatus) { var json = eval(data); changePage(json); }, error : function(XMLHttpRequest, textStatus, errorThrown) { alert("服务器请求失败!"); } }); } function changePage(json){ var title = []; title.push( "<th>id</th>"); title.push( "<th>姓名</th>"); title.push( "<th>密码</th>"); $("#tabTitle").html(title.join("")); var body = []; if (json == undefined || json.length == 0) { body.push( "<tr><td colspan=‘3‘>没有数据!</td></tr>"); } else { for(var i = 0, len = json[0].list.length;i < len; i++){ body.push( "<tr>"); body.push( "<td>"+(json[0].list[i].id == null ? "" : json[0].list[i].id)+"</td>") body.push( "<td>"+(json[0].list[i].name == null ? "" : json[0].list[i].name)+"</td>") body.push( "<td>"+(json[0].list[i].psw == null ? "" : json[0].list[i].psw)+"</td>") body.push( "</tr>") } } $("#tabBody").html(body.join("")); $("#currentPage").text(json[0].currentPage); $("#totalCount").text(json[0].totalCount); $("#totalPage").text(json[0].totalPage); // $("#pageSize").html("<option value=‘"+pageSize+"‘ selected>"+pageSize+"</option>") $(".selector").val(pageSize); } //翻页 function goto_page(currentPage) { var curp = $("#currentPage").text(); var totalPage = $("#totalPage").text(); if(currentPage == "next"){ curp = curp*1+1*1; } if(currentPage == "pre"){ curp = curp*1 - 1*1; } if(currentPage == "first"){ curp = 1; } if(currentPage == "last"){ curp = totalPage; } if(currentPage == "changePage"){ curp = curp; } if(currentPage == "jump"){ curp = $("#page").val(); } var pageSize = $("#pageSize").val();//每页显示多少行 if (pageSize == null || pageSize == "" || pageSize == undefined) { pageSize = 10; // 默认每页10条 } var rand = Math.random(); var id = $.trim($("#id").val()); var name = $.trim($("#name").val()); $.ajax( { url : "./pageExport.do", type : "GET", async : false, data: "id="+id+"&name="+name+"&rand="+rand+"¤tPage="+curp+"&pageSize="+pageSize, success : function(data, textStatus) { var json = eval(data); changePage(json); }, error : function(XMLHttpRequest, textStatus, errorThrown) { alert("服务器请求失败!"); } }); } function exportExcel(){ var id = $.trim($("#id").val()); var name = $.trim($("#name").val()); var rand = Math.random(); }
java控制器代码:
//mysql分页 @ResponseBody @RequestMapping(value = { "pageExport.do" }, method = { RequestMethod.GET,RequestMethod.POST }) public void pageExportExcel(HttpServletRequest request,HttpServletResponse response) throws Exception{ request.setCharacterEncoding("utf-8"); response.setCharacterEncoding("utf-8"); PrintWriter out = response.getWriter(); List<Map<String,Object>> list = null; String id = request.getParameter("id")==null ? "" :request.getParameter("id"); String name = request.getParameter("name")==null ? "" : java.net.URLDecoder.decode(request.getParameter("name"), "UTF-8"); String temp=request.getParameter("currentPage"); if(temp==null || temp.equals("null")){ currentPage=1; }else { currentPage=Integer.parseInt(temp); } int pageSize = request.getParameter("pageSize")==null ? 10 : Integer.parseInt(request.getParameter("pageSize"));//每页显示的记录数 int totalCount=regDao.findInfoRowCount(id,name); int totalPage = totalCount%pageSize==0 ? totalCount/pageSize : totalCount/pageSize+1;//总页面数 if(currentPage<1||currentPage==1){ currentPage=1; }else if (currentPage>totalPage) { currentPage=totalPage; } try { list = regDao.getregList(id,name,currentPage,pageSize); } catch (Exception e) { e.printStackTrace(); } Map<String, Object> map = new HashMap<String, Object>(); map.put("list", list); map.put("currentPage", currentPage); map.put("totalCount", totalCount); map.put("totalPage", totalPage); map.put("pageSize", pageSize); JSONArray js = JSONArray.fromObject(map); out.print(js); out.close(); }
接口代码:
package com.test.dao; import java.util.List; import java.util.Map; public interface RegDao { public List<Map<String, Object>> getregList(String id, String name,int currentPage,int pageSize); public int findInfoRowCount(String id,String name); }
接口实现代码:
package com.test.dao.impl; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import java.util.Map; import javax.annotation.Resource; import org.apache.log4j.Logger; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.PreparedStatementCreator; import org.springframework.jdbc.support.GeneratedKeyHolder; import org.springframework.jdbc.support.KeyHolder; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; import com.mysql.jdbc.Statement; import com.test.dao.RegDao; @Repository("regDao") @Transactional public class RegDaoImpl implements RegDao{ private static Logger logger = Logger.getLogger(RegDaoImpl.class); private JdbcTemplate jdbcTemplate; @Resource(name = "jdbcTemplate") public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } public List<Map<String, Object>> getregList(String id, String name,int currentPage,int pageSize) { StringBuffer sb = new StringBuffer(); if(!"".equals(id) || !"".equals(name)){ sb.append(" where 1=1 "); if(!"".equals(id)){ sb.append("and id = "+id+""); } if(!"".equals(name)){ sb.append(" and name like ‘"+name+"‘"); } } String sql = "select * from student "+sb+" order by id LIMIT "+(currentPage-1)*pageSize+","+pageSize+""; List<Map<String,Object>> list = null; try { list = jdbcTemplate.queryForList(sql); } catch (Exception e) { // TODO: handle exception } return list; } public int findInfoRowCount(String id,String name) { int rtn=0; StringBuffer sb = new StringBuffer(); if(!"".equals(id) || !"".equals(name)){ sb.append(" where 1=1 "); if(!"".equals(id)){ sb.append("and id = "+id+""); } if(!"".equals(name)){ sb.append(" and name like "+name+""); } } String sql = "select count(id) from student "+sb+" order by id"; try { rtn = jdbcTemplate.queryForInt(sql); } catch (Exception e) { // TODO: handle exception } return rtn; } }
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