我有一個情況,我必須得到所有下拉元素的總數。我能夠單獨實現它。下面是用於個人選擇的代碼。如何獲得所有的下拉列表值
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body><form name="Reports" method="post" action="Reports.jsp"><table><tr><td>
Select user:<select name="user" id="user">
<option value="">Select User</option>
<option value="Rakesh">Rakesh</option>
<option value="Hari">Hari</option>
</select></td><td>
Select Type:<select name="type" id="type">
<option value="'Updates','Multibases','DAIS','Acds','Legis','LegAll'">All</option>
<option value="Updates">Updates</option>
<option value="Multibases">Multibases</option>
<option value="DAIS">DAIS</option>
<option value="Acds">Admin Codes</option>
<option value="Legis">Legis</option>
<option value="LegAll">Legis-All</option>
</select></td>
<td><input type="submit" value="Generate" id="sub1" name="sub1"></td></tr>
</table> </form> </body>
和JSP低於
<%--
Document : Reports
Created on : Oct 25, 2012, 4:53:23 PM
Author : u0138039
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@include file="DBCon.jsp" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body><table>
<%
String[] a=request.getParameterValues("type");
String b=request.getParameter("user");
try{
ps=con.prepareStatement("Select * from Scope1");
ps=con.prepareStatement("SELECT SUM(Update_Count) FROM Scope1 where type ='"+a+"' and Specialist='"+b+"'");
rs=ps.executeQuery();
while(rs.next())
{%>
<tr>
<td><%=a%>:</td><td>
<%=rs.getString(1)%>
</td></tr>
<% }
}
catch(Exception e)
{
out.println(e);
}
%>
,並從下拉我用下面的SQL代碼
SELECT SUM(Update_Count) FROM Scope1 where type IN ('All','Updates','Multibases','DAIS','Acds','Legis','LegAll') and Specialist='b';
檢索所有值
並檢索單獨我用下面的代碼
ps=con.prepareStatement("SELECT SUM(Update_Count) FROM Scope1 where type IN ('"+a+"') and Specialist='"+b+"'");
我想這是一個聲明,我也想,當我選擇全部顯示在一個表格式的輸出。
感謝
感謝您的答覆老兄,但是當我試圖通過它做一個組只是給一個空白頁作爲輸出。 – Rakesh
@Rakesh你確定你能夠從數據庫中檢索值嗎? – user75ponic
當我單獨使用查詢我能夠,它也在SQL中工作。 – Rakesh