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JSP分页显示实例(基于Bootstrap)

发布时间:2016-06-11 11:00:15
首先介绍一款简单利落的分页利器:bootstrap-paginator效果截图:GitHub官方下载地址:https://github.com/lyonlai/bootstrap-paginator备用下载地址:http://files.cnblogs.com/files/Dre ...

JSP分页显示实例(基于Bootstrap)

首先介绍一款简单利落的分页利器:bootstrap-paginator

效果截图:

JSP分页显示实例(基于Bootstrap)

GitHub官方下载地址:https://github.com/lyonlai/bootstrap-paginator

备用下载地址:http://files.cnblogs.com/files/Dreamer-1/bootstrap-paginator-master.rar

下面就来详细介绍一下基于这款分页利器的JSP分页显示实现过程(注:相较于原网页我隐去了很多不必要的内容,本例只专注于分页显示的实现)

 

一:

为什么需要分页显示?

这篇博文的博主说得很透彻:http://blog.csdn.net/xiaoyousifang/article/details/5659667

 

二:

JSP页面部分,这里直接在JSP页面中用JDBC连接SqlServer2005数据库查询数据(实际实现里不建议把复杂的业务逻辑封装在JSP页面中,JSP页面应当只是负责显示;对客户端的响应、业务逻辑调用、结果转发都应该由Servlet来完成)

代码如下:

<%@ page import="PaginationExample.*" %><%@ page import="java.util.*"%><%@ page import="java.sql.*"%><%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%><%!  private static final int pageSize = 20;  //设定每页显示的记录条数(当前为每页显示20条记录)%><%    request.setCharacterEncoding("UTF-8");          //设定客户端提交给servlet的内容按UTF-8编码  response.setCharacterEncoding("UTF-8");          //设定servlet传回给客户端的内容按UTF-8编码  response.setContentType("text/html;charset=UTF-8");    //告知浏览器用UTF-8格式解析内容    String pageNoStr = request.getParameter("pageNoStr");  //接收客户端传递的要显示页数  int pageNo = 1;  //要显示的页数  int totalPages = 1;  //总页数    //检查、设置pageNo  if (pageNoStr != null && !pageNoStr.equals("")) {    try {      pageNo = Integer.parseInt(pageNoStr);            if (pageNo < 1) {        //pageNo小于1时默认显示第一页        pageNo = 1;      }    }    catch (NumberFormatException e) {      //获取到的pageNo(当前页面数)不合法时,默认显示第一页      pageNo = 1;    }  }  else {    //其他未获取到pageNo的情况都默认显示第一页    pageNo = 1;  }  /* ========================================连接数据库(获取总页数与当前页内要显示的观测记录)====================================== */        /* 获取数据库中将记录按指定条数(pageSize)分页后的总页数 */  Connection totalConn = null;  Statement totalStmt = null;  ResultSet totalRs = null;    try {    totalConn = DBUtil.getConnection();        //生成sql语句    String sqlGetTotalPages = "select count(*) from alldata";    //获取总记录条数    totalStmt = totalConn.createStatement();    totalRs = totalStmt.executeQuery(sqlGetTotalPages);    totalRs.next();    int countResult = totalRs.getInt(1);        //取得总页数    totalPages = countResult % pageSize == 0 ? countResult / pageSize : (int)(countResult / pageSize) + 1;            } catch (SQLException e) {    System.out.println("历史记录查询出错,操作未完成!");    e.printStackTrace();  } finally {    DBUtil.close(totalRs);    DBUtil.close(totalStmt);    DBUtil.close(totalConn);  }    /* 如果页数大于总页数,则默认显示最后一页 */  if (pageNo > totalPages) {    pageNo = totalPages;  }      /* 获取数据库中当前页内要显示的观测记录,使用一个List来盛装记录 */  List<Record> records = new ArrayList<Record>();      Connection conn = null;  PreparedStatement pstmt = null;  ResultSet rs = null;    int startIndex = (pageNo - 1) * pageSize + 1;  int endIndex = pageNo * pageSize;    try {    conn = DBUtil.getConnection();        String sql = "select * from (select row_number() over(order by data_taizhan_num, data_date asc) as 'num', * from alldata) as temp where num between " + startIndex + " and " + endIndex;    pstmt = conn.prepareStatement(sql);    rs = pstmt.executeQuery();    while (rs.next()) {      //取出每条记录的数据,并将其封装成Record对象      Record r = new Record();      r.setTaizhan_num(rs.getString(2));      r.setDate(rs.getTimestamp(3));      r.setTem(rs.getString(4));      r.setHum(rs.getString(5));      r.setPa(rs.getString(6));      r.setRain(rs.getString(7));      r.setWin_dir(rs.getString(8));      r.setWin_sp(rs.getString(9));                    records.add(r);    //将封装好的Record对象放入列表容器中    }      } catch (SQLException e) {    System.out.println("查询出错,操作未完成!");    e.printStackTrace();  } finally {    DBUtil.close(rs);    DBUtil.close(pstmt);    DBUtil.close(conn);  }System.out.println(totalPages);System.out.println(pageNo);/* ========================================数据库连接结束====================================== */  %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html lang="zh-CN">  <head>    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">    <meta http-equiv="X-UA-Compatible" content="IE=edge">  <%-- 在IE运行最新的渲染模式 --%>    <meta name="viewport" content="width=device-width, initial-scale=1">  <%-- 初始化移动浏览显示 --%>    <meta name="Author" content="Dreamer-1.">    <link rel="stylesheet" href="css/bootstrap.css">    <link rel="stylesheet" href="css/recordSearchResult.css">    <script type="text/javascript" src='/images/loading.gif' data-original="js/jquery-1.12.3.min.js"></script>    <script type="text/javascript" src='/images/loading.gif' data-original="js/bootstrap.min.js"></script>    <script type="text/javascript" src='/images/loading.gif' data-original="js/bootstrap-paginator.min.js"></script>          <title>- 搜索记录 -</title>  </head>    <body>    <div class="container">      <div class="wrapper">        <!-- 使用表单展示数据记录 -->        <form class="form-area">           <table class="table table-striped table-hover" >           <%            if (records == null || records.size() == 0) {              out.println("<tr><td><h4><strong>没有符合要求的记录呢,不如换个搜索条件试试吧~</strong></h4></td></tr>");                        }            else {          %>                        <tr>                <td><h4><strong>观测台站</strong></h4></td>                          <%                Record r = records.get(0);                                  if (r.getTem() != null) {                  out.println("<td><h4><strong>温度(℃)</strong></h4></td>");                }                if (r.getHum() != null) {                  out.println("<td><h4><strong>湿度(%)</strong></h4></td>");                }                if (r.getPa() != null) {                  out.println("<td><h4><strong>压强(hPa)</strong></h4></td>");                }                if (r.getRain() != null) {                  out.println("<td><h4><strong>雨量(mm)</strong></h4></td>");                }                if (r.getWin_dir() != null) {                  out.println("<td><h4><strong>风向(°)</strong></h4></td>");                }                    if (r.getWin_sp() != null) {                  out.println("<td><h4><strong>风速(m/s)</strong></h4></td>");                }                              %>                            <td><h4><strong>观测时间</strong></h4></td>              </tr>          <%            }          %>              <%            if (records != null && records.size() != 0) {              for (Record r : records) {                      %>                          <tr>                  <td><%= r.getTaizhan_num() %></td>                    <%                  if (r.getTem() != null) {                    out.println("<td>" + r.getTem() + "</td>");                  }                  if (r.getHum() != null) {                    out.println("<td>"+ r.getHum() +"</td>");                  }                  if (r.getPa() != null) {                    out.println("<td>" + r.getPa() + "</td>");                  }                  if (r.getRain() != null) {                    out.println("<td>" + r.getRain() + "</td>");                  }                  if (r.getWin_dir() != null) {                    out.println("<td>" + r.getWin_dir() + "</td>");                  }                      if (r.getWin_sp() != null) {                    out.println("<td>" + r.getWin_sp() + "</td>");                  }          %>                          <td><%= r.getDate() %></td>                </tr>                    <%                            }          %>                            </table>                          <!-- 分页显示div -->                                                  <div align="center">               <ul class="pagination" id="paginator"></ul>             </div>                          </form>                              <%            }          %>            </div>    </div>       <script type='text/javascript'>      var options = {                    bootstrapMajorVersion: 3,  //bootstrap版本          size: 'normal',          itemTexts: function (type, page, current) {            switch (type) {            case "first":              return "首页";            case "prev":              return "<i class='fa fa-caret-left'></i> 上一页";            case "next":              return "下一页 <i class='fa fa-caret-right'></i>";            case "last":              return "末页";            case "page":              return page;            }          },          tooltipTitles: function (type, page, current) {            switch (type) {            case "first":              return "首页";            case "prev":              return "上一页";            case "next":              return "下一页";            case "last":              return "末页";            case "page":              return "第" + page + "页";            }          },          pageUrl: function(type, page, current){            return "showInfoSearchResult.jsp?pageNoStr="+page;  //跳转到选定页面          },          numberOfPages: 6,  //显示“第几页”的选项数目          currentPage: <%= pageNo %>,  //当前页数          totalPages: <%= totalPages %>  //总页数          }        $('#paginator').bootstrapPaginator(options);    </script>    </body></html>

原标题:JSP分页显示实例(基于Bootstrap)

关键词:JS

JS
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