[홈페이지 제작] 홈페이지 댓글 만들기 5 - 댓글 삭제

1. View

<!-- 댓글아이템 -->
            {{#replyList}}
                <div class="list-group-item d-flex justify-content-between align-items-center">
                    <div class="d-flex">
                        <div class="px-1 me-1 bg-primary text-white rounded">{{username}}</div>
                        <div>{{comment}}</div>
                    </div>
                <!--댓글 삭제 -->
                    {{#replyOwner}}
                        <form action="/reply/{{id}}/delete" method="post">
                            <button class="btn">🗑</button>
                        </form>
                    {{/replyOwner}}
                </div>
            {{/replyList}}

2. 컨트롤러

@PostMapping("/reply/{id}/delete")
    public String delete(@PathVariable int id,HttpServletRequest request){
        //로그인 확인
        User sessionUser = (User) session.getAttribute("sessionUser");
        if(sessionUser==null){
            return "redirect:/loginForm";
        }

        Reply reply = replyRepository.findById(id);

        if(reply==null){
            request.setAttribute("msg","페이지를 찾을 수 없습니다.");
            request.setAttribute("status",404);
            return "error/40x";
        }
        if(reply.getUserId()!=sessionUser.getId()){
            request.setAttribute("msg","권한이 없습니다.");
            request.setAttribute("status",403);
            return "error/40x";
        }

        replyRepository.deleteById(id);

        return "redirect:/board/"+reply.getBoardId();
    }

3. 레파지토리

public Reply findById(int id) {
				//select 문은 Reply.class 클래스명을 작성해야 파싱 가능
        Query query = em.createNativeQuery("select * from reply_tb where id =?",Reply.class);
				query.setParameter(1,id);

        try {
            return (Reply) query.getSingleResult();
        }catch (Exception e){
            return null ;
        }
    }

@Transactional
    public void deleteById(int id) {
        Query query = em.createNativeQuery("delete from reply_tb where id = ?");
        query.setParameter(1,id);
        query.executeUpdate();
    }