//index.JSP 改进了的实现分类查询的默认页面
<%@ page contentType="text/HTML;charset=big5"%> <%@ include file="articleconn1.JSP"%><%
String types=request.getParameter("types");if(types==null)types="null";
String query=null;String sqlname=null; %><HTML><head><meta http-equiv="Content-Type" content="text/HTML; charset=big5"><title>信息查詢系統</title>
<script>
function openwin(id){ window.open("view.JSP?id="+id,"","height=450,width=550,resizable=yes,scrollbars=yes,status=no,toolbar=no,menubar=no,location=no");}
</script><link rel="stylesheet" href=../../"CSS/style.CSS"></head>
<body bgcolor="#FFFFFF" topmargin="0" leftmargin="0" marginwidth="0" marginheight="0"><table width="609" border="0" cellspacing="0" cellpadding="0" align="center"> <tr> <td> <div align="center"><img src=../../"images/TITLE.jpg" width="587" height="174"></div> </td> </tr></table>
<center>分類查看信息:<a href=../../"index.JSP?types=mp3">>>mp3</a> <a href=../../"index.JSP?types=notebook">>>notebook</a> <a href=../../"index.JSP?types=pc">>>computer</a> <a href=../../"index.JSP?types=mobile phone">>>mobile phone</a> </center><div align="center"></div><table width="607" cellpadding="0" cellspacing="0" align="center"> <tr> <td colspan="3" height="117"> <table border="1" width="100%" bordercolorlight="#000000" bordercolordark="#FFFFFF" cellpadding="0" cellspacing="0" align="center"> <tr> <td height="16" bgcolor="#B5D85E" width="81%"> <div align="center">
<p><font color="#000000"><strong>信 息 列 表</strong></font> </p> </div> </td> </tr> <tr> <td width="81%" align="center" valign="top" height="139"> <div align="center">
<div align="center"> <div align="center"><br> <br> <div align="center"> <p align="left"> <%int intPageSize;int intRowCount;//記錄總數int intPageCount;//總頁數int intPage;//頁面參數String strPage;//定義變數用來傳遞pageint i,j;intPageSize=5;//定義每頁顯示5條記錄strPage=request.getParameter("page");//取得當前的頁碼if(strPage==null){//判斷初始頁面,如果沒有顯示記錄,就置為第一頁intPage=1;}else{intPage=Integer.parseInt(strPage);//將strPage轉化為整數if(intPage<1) intPage=1;}
if(types.equals("null")){sqlname=" select count(article_id) from learning ";}else{sqlname=" select count(article_id) from learning where types='"+types+"' "; }
//sqlname="select count(article_id) from learning where title like '%"+keyword+"%' and types like '%"+typename+"%' order by article_id desc";
PreparedStatement ps=conn.prepareStatement(sqlname);ResultSet rs1=ps.executeQuery();rs1.next();intRowCount=rs1.getInt(1);//取得整數保存與intRowCount變數中intPageCount=(intRowCount+intPageSize-1)/intPageSize;//計算出總頁數(記錄總數+每頁顯示的記錄-1)/每頁顯示的記錄)if(intPage>intPageCount)intPage=intPageCount;
if(types.equals("null")){query=" select * from learning order by article_id ";}else{query=" select * from learning where types='"+types+"' order by article_id "; }
ps=conn.prepareStatement(query);//String query=" select * from learning order by article_id ";
ResultSet rs=ps.executeQuery(query);//執行sql，按照時間先後排序顯示i=(intPage-1)*intPageSize;for(j=0;j<i;j++)rs.next();%><%-- 設置intPage參數 --%> <FORM action=index.JSP method=POST><p align='center' vAlign='bottom'> 第<%=intPage%>頁 共<%=intPageCount%>頁 <%if(intPage>1){%> <a href=../../"index.JSP?page=<%=intPage-1%>&types=<%=types%>">上一頁</a> <%}%> <%if(intPage<intPageCount){%> <a href=../../"index.JSP?page=<%=intPage+1%>&types=<%=types%>">下一頁</a> <%}%> </form> </div> <div align="center"> <center> <table border="1" cellspacing="0" width="90%" bgcolor="#F0F8FF" bordercolorlight="#000000" bordercolordark="#FFFFFF" background="../images/top-linebg.gif"> <tr> <td width="15%" al
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