0. 예제 테이블 구조CREATE TABLE users ( id INT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(40) NOT NULL, email VARCHAR(100), age INT, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP);1. 객체로 넘기기1‑1. Java 코드// User.java (Lombok 예시)@Data@AllArgsConstructor@NoArgsConstructorpublic class User { private Integer id; private String username; private String emai..