📄 user_delete_new.jsp
字号:
<%@ page language="java" import="java.sql.*" pageEncoding="UTF-8"%>
<%
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>My JSP 'user_delete_new.jsp' starting page</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="test1" scope="application" class="test.Connect_db"/>
<body>
<%
Connection con=test1.getConnection();
String user_class=request.getParameter("user_class");
String user_id=request.getParameter("user_id");
String sql1="delete from student where s_id=?";
String sql2="delete from teacher where t_id=?";
String sql3="delete from administrator where id=?";
if(user_class.equals("student"))
{
PreparedStatement ps=con.prepareStatement(sql1);
ps.setString(1,user_id);
ps.executeUpdate();
}
else if(user_class.equals("teacher")){
PreparedStatement ps=con.prepareStatement(sql2);
ps.setString(1,user_id);
ps.executeUpdate();
}
else {
PreparedStatement ps=con.prepareStatement(sql3);
ps.setString(1,user_id);
ps.executeUpdate();
}
out.println("删除成功．");
con.close();
%>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -