📄 classmanager_m.jsp
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<%@ page contentType="text/html;charset=GBK" import="java.sql.*"%>
<%@ page errorPage="/public/errorBusy.jsp" %>
<%@ include file="/public/check_admin.jsp" %>
<jsp:useBean id="conn" scope="page" class="SQLBean.DBConn"/>
<%!
ResultSet rs=null;
ResultSet _rs=null;
String sql="";
String _sql="";
String sp_id="";
String sp_name="";
int class_number=0;
%>
<html>
<head>
<title>班级管理</title>
<link rel="stylesheet" href="../../public/style.css">
</head>
<body>
<a href="classmanager.jsp" class="a">建立班级</a>
<a href="classmanager_m.jsp" class="a">管理班级</a>
<a href="javascript:window.location.reload()" class="a">刷新</a>
<a href="javascript:history.back()" class="a">返回</a>
<hr></hr>
<center>
<h3>班级列表</h3>
<table width="98%" border="1" cellpadding="1" cellspacing="0">
<tr bgcolor="#3399FF">
<td width="10%">班级代号</td>
<td width="10%">年级名称</td>
<td width="20%">专业名称</td>
<td width="10%"><center>班级</center></td>
<td width="10%"><center>总人数</center></td>
<td width="10%"><center>添加学生</td>
<td width="10%"><center>删除</center></td>
</tr>
<%
sql="select * from college_name order by grade_name,sp_name asc";
rs=conn.executeQuery(sql);
if(!rs.next())
out.println("<center><h3>数据库中还没有班级!</h3></center>");
else{
do{
%>
<tr>
<td><%= rs.getString("class_id") %></td>
<td><%=rs.getString("grade_name") %>级</td>
<td><%=rs.getString("sp_name") %></td>
<td><center><%= rs.getString("class_number_name") %>班</center></td>
<%
String class_id=(String)rs.getString("class_id");
_sql="select count(*) as number from student where class_id='"+class_id+"'";
_rs=conn.executeQuery(_sql);
_rs.next();
class_number=_rs.getInt("number");
conn.close();
%>
<td><center><%= class_number %>人</center></td>
<td><center><a href="stu_manager.jsp?class_id=<%=class_id%>">添加</a></center></td>
<td><center><a href="class_del_2.jsp?id=<%=rs.getInt("id")%>" onClick="return confirm('您确信要删除吗？此班级的信息将全部删除!')">删除</a></center></td>
</tr>
<%
}while(rs.next());
}
// conn.close();
%>
</table>
</center>
</body>
</html>
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