完全JSP分页代码
点击次数：23 次 发布日期：2008-11-26 16:47:09 作者：源代码网
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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></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="http://www.zzchn.com/edu/20071023/images/prev.gif" border="0"></a><% } if (cpage<allpage) { %><a href="article.jsp?pages=<%= cpage+1 %>"><img src="http://www.zzchn.com/edu/20071023/images/next.gif" border="0"></a><% } %> / <% for (i=1;i<=allpage;i++) { if (i != pages) {%><a href="article.jsp?pages=<%= i %>"><%= i %></a><% } }%></td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </body> </html> 源代码网供稿. |
