[Spring JDBC] 진웨이얀5,6,7단계 미션제출합니다. #523
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
juanxiu
reviewed
Nov 23, 2025
| keyHolder | ||
| ); | ||
| // Generated id | ||
| Long id = keyHolder.getKey().longValue(); |
There was a problem hiding this comment.
keyHolder 에서 생성된 키를 잘 가져오고 계시는 군요! 좋습니닷 다만 keyHolder.getKey()가 null 일 수 있으니, null 체크해서 에러 던지는 로직을 작성해보는 건 어떨까요?
|
|
||
| jdbcTemplate.update( | ||
| connection -> { | ||
| PreparedStatement ps = connection.prepareStatement(sql,new String[]{"id"}); |
There was a problem hiding this comment.
PreparedStatement 를 생성할 때, 두 번째 파라미터에 컬럼명을 지정해서 가져오기 보단 PreparedStatement.RETURN_GENERATED_KEYS 를 사용하면 좋을 것 같아요! 모든 자동 생성된 키를 가져올 수 있어요.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
5단계 - 데이터베이스 적용하기
6단계 - 데이터 조회하기
7단계 - 데이터 추가/삭제하기