添加
<%@page import="java.sql.Statement"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.SQLException"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>向數據庫添加信息</title>
</head>
<body>
<%
String url="jdbc:mysql://localhost:3306/test";
String user="root";
String password="123456";
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
out.println("加載驅動類成功");
conn=DriverManager.getConnection(url,user,password);
out.println("連接MySQL成功");
} catch (ClassNotFoundException e) {
out.println("找不到驅動類");
}catch(SQLException e){
out.println("連接MySQL失敗");
}
try{
Statement stmt=conn.createStatement();
String addUser="insert into user(id,username,password)values(null,'黃敏聰','123456')";
stmt.executeUpdate(addUser);
out.println("添加用戶信息成功");
}catch(SQLException e){
out.println("添加用戶信息失敗");
}
%>
</body>
</html>
修改
<%@page import="java.sql.Statement"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.SQLException"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>更新用戶信息</title>
</head>
<body>
<%
String url="jdbc:mysql://localhost:3306/test";
String user="root";
String password="123456";
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
out.println("加載驅動類成功");
conn=DriverManager.getConnection(url,user,password);
out.println("連接MySQL成功");
} catch (ClassNotFoundException e) {
out.println("找不到驅動類");
}catch(SQLException e){
out.println("連接MySQL失敗");
}
try{
Statement stmt=conn.createStatement();
String updateUser="update user set password='000000' where id=1";
stmt.executeUpdate(updateUser);
out.println("修改用戶信息成功");
}catch(SQLException e){
out.println("修改用戶信息失敗");
}
%>
</body>
</html>
刪除
<%@page import="java.sql.Statement"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.SQLException"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>更新用戶信息</title>
</head>
<body>
<%
String url="jdbc:mysql://localhost:3306/test";
String user="root";
String password="123456";
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
out.println("加載驅動類成功");
conn=DriverManager.getConnection(url,user,password);
out.println("連接MySQL成功");
} catch (ClassNotFoundException e) {
out.println("找不到驅動類");
}catch(SQLException e){
out.println("連接MySQL失敗");
}
try{
Statement stmt=conn.createStatement();
String deletUser="delete from user where id='2'";
stmt.executeUpdate(deletUser);
out.println("刪除用戶信息成功");
}catch(SQLException e){
out.println("刪除用戶信息失敗");
}
%>
</body>
</html>