java连接本地mysql数据库

import java.sql.*;

public class MySQLExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase"; // 数据库连接URL，格式为jdbc:mysql://host:port/database
        String username = "root"; // 数据库用户名
        String password = "password"; // 数据库密码

        try {
            // 加载MySQL驱动
            Class.forName("com.mysql.cj.jdbc.Driver");

            // 建立数据库连接
            Connection connection = DriverManager.getConnection(url, username, password);

            // 创建Statement对象
            Statement statement = connection.createStatement();

            // 执行查询
            String sql = "SELECT * FROM mytable";
            ResultSet resultSet = statement.executeQuery(sql);

            // 处理查询结果
            while (resultSet.next()) {
                // 读取每一行数据并进行处理
                String column1 = resultSet.getString("column1");
                int column2 = resultSet.getInt("column2");
                System.out.println("Column 1: " + column1 + ", Column 2: " + column2);
            }

            // 关闭连接和释放资源
            resultSet.close();
            statement.close();
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}