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  • 完全JSP分页代码

    对于分页这个问题,我试着以以前写ASP和PHP的思路做了一下,是以纯JSP代码的形式,后来又写了一个bean来实现,实际的结果发现2者速度没有多大差别(我是做了20000条记录的分页:>)我还想试试servlet的结果如何
    关于分页的代码如下:
    //Author tar(bigangell@yesky.com
    //您可以任意拷贝复制该代码,但请加上以上作者信息
    //有任何问题请与我联系
    //效果请看 http://210.77.144.64/kk/java/java/article.jsp

    <%@ page import="java.sql.*" %>
    <%@ page import="java.io.*" %>
    <%@ page import="java.util.*" %>
    <jsp:useBean id="sqlconn" scope="page" class="kk.database.sqlconn" />
    <%! String aTitle,aAuthor,AType,ArticleType,InsertTime,Color; %>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <TITLE>ArticleList</TITLE>
    <META NAME="Generator" CONTENT="jBuilder3.5 && jEdit1.0">
    <META NAME="Author" CONTENT="bigangell">
    <META NAME="Keywords" CONTENT="Java,Servlet,Jsp,Beans,PHP">
    <META NAME="Description" CONTENT="A Pure World For Programming Include C/C++,Java">
    <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=gb2312">
    <link rel="stylesheet" href="style.css">
    </head>

    <body bgcolor="#FFFFFF">
    <table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
    <tr>
    <td>
    <table width="750" border="0" cellspacing="2" cellpadding="2" align="center">
    <tr align="center">
    <td>&nbsp;</td>
    </tr>
    <tr>
    <td>
    <table width="740" border="0" cellspacing="1" cellpadding="1" align="center">
    <tr align="center" bgcolor="#CCCCCC">
    <td><b>标题</b></td>
    <td><b>作者</b></td>
    <td><b>类型</b></td>
    <td><b>点击</b></td>
    <td><b>加入时间</b></td>
    </tr>
    <%
    int i;
    int ipage=10; //分页单位
    int allpage; //总页数
    int pages; //接受的页码变量
    int cpage=1; //当前页
    int spage; //开始页


    //数据库连接声明
    java.lang.String sql,pagesql;
    java.sql.ResultSet rs,pagers;
    pagesql = "select count(a_id) as A from article";

    //取总文章数
    pagers = sqlconn.executeQuery(pagesql);
    int allCol = pagers.getInt("A");

    //获得总页面数
    allpage = (int)Math.ceil((allCol + ipage-1) / ipage);

    //判断参数pages是否为空
    if (request.getParameter("pages")==null) {
    pages=1;
    } else {
    pages = new Integer(request.getParameter("pages")).intValue();
    }

    //判断当前页
    if(pages > allpage // pages == 0){
    cpage = 1;
    } else {
    cpage = pages;
    }

    //判断起始页
    spage=(cpage-1)*ipage;

    sql = "select a_id,a_title,a_author,aID,a_time,a_readtime,sID from article order by a_id desc limit "+ spage +","+ ipage;
    rs = sqlconn.executeQuery(sql);
    int cu=1;

    //循环取数据库值
    while (rs.next()) {
    int aID = rs.getInt("a_id");
    aTitle = rs.getString("a_title");
    aAuthor = rs.getString("a_author");
    int ArticleTypeID = rs.getInt("aID");
    int ReadTime = rs.getInt("a_readtime");
    InsertTime = rs.getString("a_time");
    if (cu % 2 == 0) { Color="#DBECFD"; }
    else { Color="#C6E1FD"; }
    switch (ArticleTypeID) {
    case(1):
    ArticleType="小说";
    break;
    case(2):
    ArticleType="散文";
    break;
    case(3):
    ArticleType="诗歌";
    break;
    case(4):
    ArticleType="随笔";
    break;
    }
    %>
    <tr bgcolor="<%= Color %>">
    <td width="300"><a href="viewarticle.jsp?aID=<%= aID %>"><%= aTitle %></a></td>
    <td align="center" width="100"><%= aAuthor %></td>
    <td align="center" width="50"><%= ArticleType %></td>
    <td align="center" width="50"><%= ReadTime %></td>
    <td align="center" width="240"><%= InsertTime %></td>
    </tr>
    <%
    cu++;
    }
    %>
    <tr bgcolor="#CCCCCC">
    <td colspan="5" align="right" valign="middle">共 <%= allCol %>条记录 共 <%= allpage %>页 <% if (cpage>1) { %><a href="article.jsp?pages=<%= cpage-1 %>"><img src="images/prev.gif" border="0"></a><% } if (cpage<allpage) { %><a href="article.jsp?pages=<%= cpage+1 %>"><img src="images/next.gif" border="0"></a><% } %> / <% for (i=1;i<=allpage;i++) { if (i != pages) {%><a href="article.jsp?pages=<%= i %>"><%= i %></a>&nbsp;<% } }%></td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/chinatefl/p/135531.html
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