jsp页面数据分页模仿百度分页效果(实例讲解)

2024-09-05 00:23:11

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<%@page import="web09.shop.DBUtil"%><%@page import="java.sql.ResultSet"%><%@page import="java.sql.PreparedStatement"%><%@page import="java.sql.Connection"%><%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE html><html><head>  <meta charset="UTF-8">  <title>数据分页</title>  <style type="text/css">    .page a{      min-width: 34px;      height: 34px;      border: 1px solid #e1e2e3;      cursor: pointer;      display:block;      float: left;      text-decoration: none;      text-align:center;      line-height: 34px;          }        .page a:HOVER {      background: #f2f8ff;      border: 1px solid #38f ;    }    .page a.prev{      width:50px;    }    .page span{      width: 34px;      height: 34px;      border: 1px solid transparent;      cursor: pointer;      display:block;      float: left;      text-decoration: none;      text-align:center;      line-height: 34px;      cursor: default;    }  </style></head><body><table class="tt" border="1" align="center" width="80%" cellpadding="10">  <tr>    <th>ID</th>    <th>姓名</th>    <th>年龄</th>    <th>专业</th>  </tr>  <%  DBUtil dbutil=new DBUtil();  Connection conn=dbutil.getCon();  //Connection conn = new DBUtil().getCon();  PreparedStatement pstmt1 = conn.prepareStatement("select count(*) from student");  ResultSet rs1 = pstmt1.executeQuery();  rs1.next();  int recordCount = rs1.getInt(1);   //记录总数  int pageSize = 10;          //每页记录数  int start=1;            //显示开始页  int end=10;              //显示结束页  int pageCount = recordCount%pageSize==0 ? recordCount/pageSize : recordCount/pageSize+1;   int currPage = request.getParameter("p")==null ? 1 : Integer.parseInt(request.getParameter("p"));    currPage = currPage<1 ? 1 : currPage;  currPage = currPage>pageCount ? pageCount : currPage;    PreparedStatement pst = conn.prepareStatement("select * from student limit ?,?");  pst.setInt(1,currPage*pageSize-pageSize);  pst.setInt(2,pageSize);  ResultSet rs = pst.executeQuery();    while(rs.next()){  %>  <tr align="center">  <td><%=rs.getInt(1) %></td>  <td><%=rs.getString(2) %></td>  <td><%=rs.getInt("age") %></td>  <td><%=rs.getString(4) %></td>  </tr>  <%  }  %>  <tr>     <th colspan="4" class="page">       <%          out.print(String.format("<a class=/"prev/" href=/"?p=%d/">首页</a>",1));         if(currPage>=7){           start=currPage-5;           end=currPage+4;         }         if(start>(pageCount-10)){           start=pageCount-9;         }         if(currPage>1){           out.print(String.format("<a class=/"prev/" href=/"?p=%d/">上一页</a>",currPage-1));         }                  for(int i=start;i<=end;i++){           if(i>pageCount) break;           String pageinfo=String.format("<a href=/"?p=%d/">%d</a>",i,i);           if(i==currPage){             pageinfo=String.format("<span>%d</span>",i);           }           out.print(pageinfo);         }                  if(currPage<=pageCount){           out.print(String.format("<a class=/"prev/" href=/"?p=%d/">下一页</a>",currPage+1));         }                  out.print(String.format("<a class=/"prev/" href=/"?p=%d/">尾页</a>",pageCount));        %>     </th>   </tr></table></body></html>

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