我在oracle中创建了一个表，其中包含college_names、student_name、regno和result属于特定的大学和每所大学的college_ids以及数据存储的日期......
现在我想给出college_id和日期，我希望所有学生的姓名及其结果和regno在浏览器中的表格结构中我已经编写了一个html页面用于提供college_id和日期，以及一个jsp页面用于从数据库中检索不同的字段但是它不起作用..这是我的两个页面的代码..
这是我的 html 页面
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org /TR/html4/loose.dtd">
<html>
<head>
<script>
function check()
{
var a=result.college_id.value;
var b=result.date.value;
if(a==""|| b=="")
{
alert("fill the fields")
}
else
{
result.action="result.jsp";
result.method="post";
result.submit();
}
}
</script>
</head>
<body bgcolor="#cc99ff">
<form name="result">
<center>
<table>
<tr>
<td>college_id:</td>
<td><input type="text" name="college_id"></td>
</tr>
<tr>
<td>date:</td>
<td><input type="text" name="date"></td>
</tr>
<tr>
<td>
<input type="Button" value="Submit" onClick="check()">
</td>
</tr>
</table>
</center>
</body>
</html>
现在这是我用于检索多行的 jsp 页面...
<html>
<body background="main_BG.jpg">
<%@page language="java"%>
<%@page import="java.sql.*,java.util.*"%>
<%!
Connection con;
PreparedStatement ps;
ResultSet rs;
String college_id;
String college_name;
String regno;
String student_name;
String result;
String date;
%>
<%
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","pro","pro
");
college_id=request.getParameter("college_id");
date=request.getParameter("date");
ps=con.prepareStatement("select * from add_result where college_id=? and date=?");
ps.setString(1,college_id);
ps.setString(6,date);
rs=ps.executeQuery();
while(rs.next())
{
college_name=rs.getString(2);
regno=rs.getString(3);
student_name=rs.getString(4);
result=rs.getString(5);
}
else
{
out.println("no data found");
}
}
catch(Exception e)
{
out.println("<center><b><font color=lightblue>some error occured...please try again</font></b></center>");
out.println("<br><br><a href='result.html'><center><b><font color=lightblue>click here to return..</font></b></center>");
}
%>
<center>
<font color=lightblue>
<b>
Information of student with college_id [<%=college_id%>]:
</b>
</font>
</center>
<p style="position:absolute;left:100;top:100">
<table border="2" width="100%">
<th style="color:yellow">
college_name
</th>
<th style="color:yellow">
regno
</th>
<th style="color:yellow">
student_name
</th>
<th style="color:yellow">
result
</th>
<tr>
<td style="color:lightgreen" align="center"><%=college_name%></td>
<td style="color:lightgreen" align="center"><%=regno%></td>
<td style="color:lightgreen" align="center"><%=student_name%></td>
<td style="color:lightgreen" align="center"><%=result%></td>
</tr>
</table>
</p>
</body>
</html>