📄 update.jsp
字号:
<%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="UTF-8"%>
<%@ page contentType="text/html;charset=gb2312" %>
<%
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 'update.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>
<body>
<%
try{
request.setCharacterEncoding("gbk");
String parent=request.getParameter("parent1");
String child1=request.getParameter("child1");
String child2=request.getParameter("child2");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ="+"C:\\Documents and Settings\\Administrator\\My Documents\\"+"menu.mdb";
Connection conn = DriverManager.getConnection(url);
if(parent.equals("根目录")){
String sql1="update b set c_name='"+child2+"' where c_name='"+child1+"'";
Statement statement = conn.createStatement();
int i=statement.executeUpdate(sql1);
if(i==0) out.print("修改不成功");
else out.print("修改成功");
statement.close();
}
else {
String sql2="select c_id from b where c_name='"+parent+"'";
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery(sql2);
int paren=0;
if(rs!=null){
if(rs.next()) {paren=rs.getInt(1);
stmt.close();
String sql="update c set c1_name='"+child2+"' where c1_name='"+child1+"' and c_id="+paren+"";
Statement statement = conn.createStatement();
int i=statement.executeUpdate(sql);
if(i==0) out.print("修改不成功");
else out.print("修改成功");
statement.close();
conn.close();
}
else out.print("修改不成功");
}}
}catch(Exception e){
out.print(e.getMessage());}
%>
</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 + -