Oracle 将表中的数据动态检索到jsp中
我有下面的代码从Oracle表中检索数据。这很好用Oracle 将表中的数据动态检索到jsp中,oracle,jsp,jdbc,Oracle,Jsp,Jdbc,我有下面的代码从Oracle表中检索数据。这很好用 <%@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
<%@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">
<title>JSP Page</title>
</head>
<body><table>
<%
String a=request.getParameter("type").trim();
String b=request.getParameter("user").trim();
String c=request.getParameter("from").trim();
String d=request.getParameter("to").trim();
ResultSetMetaData rsmd;
String st="SELECT type, Hari, Rakesh, Total FROM (select (type), max( decode( SPECIALIST, 'Hari', cnt, null ) ) Hari, max( decode( SPECIALIST, 'Rakesh', cnt, null ) ) Rakesh, Sum(cnt) total from ( select (type),specialist, sum(update_count) cnt from scope1 where (RECVD_DATE >='"+c+"' and RECVD_DATE <='"+d+"') group by (type),specialist ) q group by (type) Union Select 'Total' as type, Sum(Hari) Hari,Sum(Rakesh) Rakesh,Sum(total) Total from ( select (type), max( decode( SPECIALIST, 'Hari', cnt, null ) ) Hari, max( decode( SPECIALIST, 'Rakesh', cnt, null ) ) Rakesh, Sum(cnt) total from ( select (type),specialist, sum(update_count) cnt from scope1 where (RECVD_DATE >='"+c+"' and RECVD_DATE <='"+d+"') group by (type),specialist ) q group by (type) )a) b Order by Total";
try{%>
<tr><b><%=b%></b></tr><%
//String sql=(st);
//out.print(sql);
ps1=con.prepareStatement(st);
rs1=ps1.executeQuery();
rsmd=rs1.getMetaData();
int cou=rsmd.getColumnCount();
for(int i=1;i<cou;i++){
%>
<td><%=rsmd.getColumnName(i)%>
<%
}
%>
<td>Total</td>
<%
while(rs1.next())
{
%>
<tr><td><b><%=rs1.getString(1)%></b></td><td><%=rs1.getString(2)%></td><td><%=rs1.getString(3)%></td><td><%=rs1.getString(4)%> </td></tr>
<%
}
}
catch(Exception e)
{
out.println(e);
}
%>
</table> </body>
</html>
JSP页面
='“+c+”'和记录日期='“+c+”'和记录日期
但是我永远不会这样做。JSP不应该使用scriptlet。他们不应该执行数据库查询。他们唯一的工作应该是使用存储在请求属性中的对象生成HTML标记
SQL查询应该位于首选MVC框架的servlet或操作中。这个servlet将获取数据，将其存储在列表中，将该列表放入请求属性中，然后转发给JSP
然后JSP将使用JSTL和JSPEL（以及其他自定义标记，如果需要的话），以显示这个列表
<tr><td><b><%=rs1.getString(1)%></b></td><td><%=rs1.getString(2)%></td><td><%=rs1.getString(3)%></td><td><%=rs1.getString(4)%> </td></tr>
SELECT type, Hari, Rakesh, Total FROM (select (type), max( decode( SPECIALIST, 'Hari', cnt, null ) ) Hari, max( decode( SPECIALIST, 'Rakesh', cnt, null ) ) Rakesh, Sum(cnt) total from ( select (type),specialist, sum(update_count) cnt from scope1 where (RECVD_DATE >='"+c+"' and RECVD_DATE <='"+d+"') group by (type),specialist ) q group by (type) Union Select 'Total' as type, Sum(Hari) Hari,Sum(Rakesh) Rakesh,Sum(total) Total from ( select (type), max( decode( SPECIALIST, 'Hari', cnt, null ) ) Hari, max( decode( SPECIALIST, 'Rakesh', cnt, null ) ) Rakesh, Sum(cnt) total from ( select (type),specialist, sum(update_count) cnt from scope1 where (RECVD_DATE >='"+c+"' and RECVD_DATE <='"+d+"') group by (type),specialist ) q group by (type) )a) b Order by Total
<%=rs1.getString(i)%>
<%
for (int i = 1; i < 5; i++) {
%>
<td><%= rs1.getString(i) %></td>
<%
}
%>