📄 changeroom.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>换房</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<jsp:useBean id="change" scope="session" class="db.DBCon" />
<body>
<%
String chgroom=request.getParameter("chgroom");
String room=request.getParameter("room");
String roomcode=request.getParameter("roomcode");
String name=request.getParameter("name");
String certificate=request.getParameter("certificate");
String roomcode1=change.roomcode(chgroom);
String sql;
out.println(roomcode1);
out.println(change.beds(room));
if(change.hasEmptyBed(chgroom)){
sql="update guests set roomcode='"+roomcode1+"' where roomcode='"+roomcode+"' "+
"and name='"+name+"' and certificate='"+certificate+"';";
change.excuteUpdate(sql);
change.close();
sql="update roomstate set roomstate='1' where roomcode='"+roomcode1+"';";
change.excuteUpdate(sql);
change.close();
out.println("换房成功");
if(change.guestnum(room)==0){
sql="update roomstate set roomstate='z' where roomcode='"+roomcode+"';";
change.excuteUpdate(sql);
change.close();
}
}
else{
out.println("你要换的房间没有空床，请换另一间！");
}
%>
</body>
</html>
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