📄 addcl2.jsp
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<%@page contentType="text/html; charset=GB2312"%>
<%@page import="java.sql.*"%>
<jsp:useBean id="DBConn" class="jspeshop.DBConn" scope="page"/>
<%
if (session.getAttribute("name") == null) {
response.sendRedirect("index.jsp");
}
else {
request.setCharacterEncoding("GB2312");
String sql=null;
Connection con;
Statement st;
String options = request.getParameter("options");
int op = 0;
if (options.equals("rename"))
op = 1;
if (options.equals("del"))
op = 2;
if (options.equals("new"))
op = 3;
con = DBConn.GetConn();
st = con.createStatement();
String cl2_name = request.getParameter("CL2_NAME");
switch (op) {
case 1:
sql = "update Class2 set CL2_NAME='" + request.getParameter("reTitle") + "' where CL2_NAME='" + cl2_name + "'";
st.executeUpdate(sql);
sql = "update Product set CL2_NAME='" + request.getParameter("reTitle") + "' where CL2_NAME='" + cl2_name + "'";
st.executeUpdate(sql);
break;
case 2:
sql = "delete from Class2 where CL2_NAME='" + cl2_name + "'";
st.executeUpdate(sql);
sql = "delete from Product where CL2_NAME='" + cl2_name + "'";
st.executeUpdate(sql);
break;
case 3:
sql="select * from Class2 where CL2_NAME='" + request.getParameter("CL1_NAME") + "'";
ResultSet rs= st.executeQuery(sql);
if (rs.next()){
response.sendRedirect("chkerre1.jsp");
return;
}
sql = "Insert into Class2(CL1_NAME,CL2_NAME) values('" + request.getParameter("CL1_NAME")+"','"+ request.getParameter("newTitle")+"')";
st.executeUpdate(sql);
break;
}
out.println("操作成功");
con.close();
st.close();
%>
<html>
<head>
<title>修改成功</title>
<meta http-equiv="refresh" content='0;URL=add_class_2.jsp'>
<style type="text/css">
<!--
.style3 {color: #FFFFFF}
-->
</style>
</head>
<body>
<p align="center"><b> </b></p>
<p> </p>
<p> </p>
<table width="316" height="137" border="1" align="center">
<tr>
<th width="306" height="131" bgcolor="#336699" scope="row"><span class="style3">修改成功</span></th>
</tr>
</table>
<%
}
%>
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