?? update.jsp
字號(hào):
<html>
<head>
<title>更新數(shù)據(jù)庫(kù)</title>
<%@ page session="true" %>
<%@ page contentType="text/html;charset=gb2312" %>
</head>
<body bgcolor="#CCFFCC">
<%@ page language="java" %>
<%@ page import="java.util.*" %>
<%@ page import="javax.servlet.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="ConDB" %>
<jsp:useBean id="check" scope="page" class="ConDB" />
<%
String id = (String)application.getAttribute("stdid");
int[] course= new int[]{-1,-1};
int sum=0 ; // 記錄選了幾門課
String[] checked = new String[5];
checked[0] = (String)request.getParameter("check0");
checked[1] = (String)request.getParameter("check1");
checked[2] = (String)request.getParameter("check2");
checked[3] = (String)request.getParameter("check3");
checked[4] = (String)request.getParameter("check4");
for(int i=0; i<5; i++)
{
if(checked[i].equals("on")){
course[sum++] = i+1;
}
}
if(sum>2){
out.println("<center>選課不能超過(guò)兩門!");
out.println("<a href='./select.jsp'>返回</a></center>");
}
if(sum==1){
String sql = "insert into sc(stdid,course1,course2) values('"+id+"','"+course[0]+"','NULL')";
check.executeQuery(sql);
}
if(sum==2){
String sql = "insert into sc(stdid,course1,course2) values('"+id+"','"+course[0]+"','"+course[1]+"')";
check.executeQuery(sql);
}
out.println("<center>選課成功!</center>");
%>
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