java操作mysql数据库代码

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQLExample {
    public static void main(String[] args) {
        // JDBC连接MySQL数据库
        String url = "jdbc:mysql://localhost:3306/mydatabase";  // 数据库URL
        String username = "root";  // 数据库用户名
        String password = "password";  // 数据库密码
        
        try {
            Connection conn = DriverManager.getConnection(url, username, password);
            
            // 执行SQL查询
            Statement stmt = conn.createStatement();
            String sql = "SELECT * FROM users";
            ResultSet rs = stmt.executeQuery(sql);
            
            // 处理查询结果
            while (rs.next()) {
                int id = rs.getInt("id");
                String name = rs.getString("name");
                System.out.println("ID: " + id + ", Name: " + name);
            }
            
            // 关闭资源
            rs.close();
            stmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}