19강 Talend API POST 500 에러

안녕하세요. 강의듣던중 오류가 생겨서 코드 남깁니다.

인텔리제이에 코딩한건 아래와 같고,

package com.example.firstproject.api;

import com.example.firstproject.dto.ArticleForm;
import com.example.firstproject.entity.Article;
import com.example.firstproject.repository.ArticleRepository;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@Slf4j
@RestController //RestAPI용 컨트롤러. 데이터(JSON)을 반환
public class ArticleApiController {

    @Autowired //DI
    private ArticleRepository articleRepository;

    //GET
    @GetMapping("/api/articles")
    public List<Article> index() {
        return articleRepository.findAll();
    }

    @GetMapping("/api/articles/{id}")
    public Article show(@PathVariable Long id) {
        return articleRepository.findById(id).orElse(null);
    }

    //POST
    @PostMapping("/api/articles")
    public Article create(@RequestBody ArticleForm dto) {
        Article article = dto.toEntity();
        return articleRepository.save(article);
    }

    //PATCH
    @PatchMapping("/api/articles/{id}")
    public ResponseEntity<Article> update(@PathVariable Long id,
                                          @RequestBody ArticleForm dto) {
        // 1: DTO -> 엔티티
        Article article = dto.toEntity();
        log.info("id: {}, article: {}", id, article.toString());

        // 2: 타겟 조회
        Article target = articleRepository.findById(id).orElse(null);

        // 3: 잘못된 요청 처리
        if (target == null || id != article.getId()) {
            // 400, 잘못된 요청 응답!
            log.info("잘못된 요청! id: {}, article: {}", id, article.toString());
            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
        }

        // 4: 업데이트 및 정상 응답(200)
        target.patch(article);
        Article updated = articleRepository.save(target);
        return ResponseEntity.status(HttpStatus.OK).body(updated);
    }

    //DELETE
    @DeleteMapping("/api/articles/{id}")
    public ResponseEntity<Article> delete(@PathVariable Long id) {
        // 대상 찾기
        Article target = articleRepository.findById(id).orElse(null);

        // 잘못된 요청 처리
        if (target == null) {
            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
        }

        // 대상 삭제
        articleRepository.delete(target);
        return ResponseEntity.status(HttpStatus.OK).build();
    }
}

package com.example.firstproject.entity;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.ToString;

import javax.persistence.*;

@Entity //DB가 해당 객체를 인식 가능 (해당 클래스로 테이블을 만든다)
@AllArgsConstructor
@NoArgsConstructor //디폴트 생성자를 추가
@ToString
@Getter
public class Article {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)//DB가 ID를 자동 생성
    private Long id;

    @Column
    private String title;

    @Column
    private String content;

    public void patch(Article article) {
        if (article.title != null)
            this.title = article.title;
        if (article.content != null)
            this.content = article.content;
        }
    }

package com.example.firstproject.dto;

import com.example.firstproject.entity.Article;
import lombok.AllArgsConstructor;
import lombok.NoArgsConstructor;
import lombok.ToString;

import javax.persistence.Entity;


@NoArgsConstructor
@AllArgsConstructor
@ToString
public class ArticleForm {

    private Long id;
    private String title;
    private String content;

    public Article toEntity() {

        return new Article( id, title, content);
    }
}

인텔리제이 오류는 아래와 같고,

org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: Unique index or primary key violation: "PRIMARY KEY ON PUBLIC.ARTICLE(ID) ( /* key:1 */ CAST(1 AS BIGINT), '1111', '1')"; SQL statement:

insert into article (id, content, title) values (default, ?, ?) [23505-214]

Talend API 오류는 아래와 같습니다.

{

"timestamp": "2022-11-01T12:34:19.732+00:00",

"status": 500,

"error": "Internal Server Error",

"path": "/api/articles"

}

아래에는 캡처본 올립니다.

먼저 비슷한 질문 해주신 분 따라서 해봤는데 안되서 질문올립니다.