JSP分页 | 易学教程

页面pagelistDemo.jsp内容：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
    //连接字符串
    String url = "jdbc:sqlserver://" + Globals.Server
            + ";databaseName=" + Globals.DbName;
    Class.forName(Globals.driverName).newInstance();
    Connection connection = DriverManager.getConnection(url,
            Globals.username, Globals.pwd);
    Statement statement = connection.createStatement();

    //每页显示记录数
    int PageSize = 10;
    int StartRow = 0; //开始显示记录的编号
    int PageNo = 0;//需要显示的页数
    int CounterStart = 0;//每页页码的初始值
    int CounterEnd = 0;//显示页码的最大值
    int RecordCount = 0;//总记录数;
    int MaxPage = 0;//总页数
    int PrevStart = 0;//前一页
    int NextPage = 0;//下一页
    int LastRec = 0;
    int LastStartRecord = 0;//最后一页开始显示记录的编号

    //获取需要显示的页数，由用户提交
    if (request.getParameter("PageNo") == null) { //如果为空，则表示第1页
        if (StartRow == 0) {
            PageNo = StartRow + 1; //设定为1
        }
    } else {
        PageNo = Integer.parseInt(request.getParameter("PageNo")); //获得用户提交的页数
        StartRow = (PageNo - 1) * PageSize; //获得开始显示的记录编号
    }

    //因为显示页码的数量是动态变化的，假如总共有一百页，则不可能同时显示100个链接。而是根据当前的页数显示
    //一定数量的页面链接

    //设置显示页码的初始值!!
    if (PageNo % PageSize == 0) {
        CounterStart = PageNo - (PageSize - 1);
    } else {
        CounterStart = PageNo - (PageNo % PageSize) + 1;
    }

    CounterEnd = CounterStart + (PageSize - 1);
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%@page import="net.data.util.Globals"%>
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.Statement"%>
<element>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>分页显示记录</title>
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<%
    //获取总记录数
    ResultSet rs = statement
            .executeQuery("select count(P_ID) from product");
    rs.next();
    RecordCount = rs.getInt(1);

    //取特定页数的数据
    String strColumn = " P_ID,P_Name,LoginID,modTime,P_SingleIntro ";
    String strTable = " Product ";
    String strSort = " p_ID desc ";
    String PKID = "P_ID";
    String strSql = "";
    String strWhere = "";
    String START_ID = Integer.toString((PageNo - 1) * PageSize + 1);
    String END_ID = Integer.toString(PageNo * PageSize);
    strSql = " SELECT " + strColumn
            + " FROM (SELECT ROW_NUMBER() OVER(ORDER BY " + strSort
            + ") AS rownum," + strColumn + " FROM " + strTable
            + " WITH(NOLOCK) " + strWhere
            + ") AS D WHERE rownum BETWEEN " + START_ID + " AND "
            + END_ID + " ORDER BY " + strSort;
    rs = statement.executeQuery(strSql);

    //获取总页数
    MaxPage = RecordCount % PageSize;
    if (RecordCount % PageSize == 0) {
        MaxPage = RecordCount / PageSize;
    } else {
        MaxPage = RecordCount / PageSize + 1;
    }
%>
<body class="UsePageBg">
<table width="100%" border="0" class="InternalHeader">
    <tr>
        <td width="24%"><font size=4>分页显示记录</font></td>
        <td width="76%"><font size=4><%="总共" + RecordCount + "条记录 - 当前页：" + PageNo + "/"
                    + MaxPage%></font></td>
    </tr>
</table>

<br>
<table width="100%" border="0" class="NormalTableTwo">
    <tr>
        <td class="InternalHeader">记录序号</td>
        <td class="InternalHeader">数据标识号</td>
        <td class="InternalHeader">产品名称</td>
        <td class="InternalHeader">作者</td>
        <td class="InternalHeader">提交时间</td>
        <td class="InternalHeader">简介</td>
    </tr>

    <%
        long i = 1;
        while (rs.next()) {
            long bil = i + (PageNo - 1) * PageSize;
    %>
    <tr>
        <td class="NormalFieldTwo"><%=bil%></td>
        <td class="NormalFieldTwo"><%=rs.getString(1)%></td>
        <td class="NormalFieldTwo"><%=rs.getString(2)%></td>
        <td class="NormalFieldTwo"><%=rs.getString(3)%></td>
        <td class="NormalFieldTwo"><%=rs.getString(4)%></td>
        <td class="NormalFieldTwo"><%=rs.getString(5)%></td>
    </tr>
    <%
        i++;
        }
    %>
</table>
<br>
<table width="100%" border="0" class="InternalHeader">
    <tr>
        <td>
        <div align="center">
        <%
            out.print("<font size=4>");
            //显示第一页或者前一页的链接
            //如果当前页不是第1页，则显示第一页和前一页的链接
            if (PageNo != 1) {
                PrevStart = PageNo - 1;
                out.print("<a href=pagelistDemo.jsp?PageNo=1>第一页 </a>: ");
                out.print("<a href=pagelistDemo.jsp?PageNo=" + PrevStart
                        + ">前一页</a>");
            }
            out.print("[");

            //打印需要显示的页码
            for (int c = CounterStart; c <= CounterEnd; c++) {
                if (c < MaxPage) {
                    if (c == PageNo) {
                        if (c % PageSize == 0) {
                            out.print(c);
                        } else {
                            out.print(c + " ,");
                        }
                    } else if (c % PageSize == 0) {
                        out.print("<a href=pagelistDemo.jsp?PageNo=" + c + ">" + c
                                + "</a>");
                    } else {
                        out.print("<a href=pagelistDemo.jsp?PageNo=" + c + ">" + c
                                + "</a> ,");
                    }
                } else {
                    if (PageNo == MaxPage) {
                        out.print(c);
                        break;
                    } else {
                        out.print("<a href=pagelistDemo.jsp?PageNo=" + c + ">" + c
                                + "</a>");
                        break;
                    }
                }
            }

            out.print("]");
            ;

            if (PageNo < MaxPage) { //如果当前页不是最后一页，则显示下一页链接
                NextPage = PageNo + 1;
                out.print("<a href=pagelistDemo.jsp?PageNo=" + NextPage
                        + ">下一页</a>");
            }

            //同时如果当前页不是最后一页，要显示最后一页的链接
            if (PageNo < MaxPage) {
                LastRec = RecordCount % PageSize;
                if (LastRec == 0) {
                    LastStartRecord = RecordCount - PageSize;
                } else {
                    LastStartRecord = RecordCount - LastRec;
                }

                out.print(":");
                out.print("<a href=pagelistDemo.jsp?PageNo=" + MaxPage
                        + ">最后一页</a>");
            }
            out.print("</font>");
        %>
        </div>
        </td>
    </tr>
</table>
<%
    rs.close();
    statement.close();
    connection.close();
%>
</body>
</html>

用到的类文件：Globals.java

Code
/** *//**
*
*/
package net.data.util;

/** *//**
* @author Administrator
*
*/
public class Globals {
    public static String username="sa";
    public static String pwd="sa";
    public static String DbName="TestData";
    //public static String Server="192.168.30.6";
    public static String Server="192.168.44.2:1433";
    public static String Port="1433";

    public static String driverName="com.microsoft.sqlserver.jdbc.SQLServerDriver";
//    public static String connectionURL {
//
//            return "jdbc:sqlserver://"+Server+":"+Port+";databaseName="+DbName;
//    }

}

来源：https://www.cnblogs.com/smallsong/archive/2012/02/08/2342616.html

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