공부기록, 2021-08-24(화), 134일차

## JSP
```
package com.jhs.exam.exam2.service;

import java.util.List;

import com.jhs.exam.exam2.container.Container;
import com.jhs.exam.exam2.container.ContainerComponent;
import com.jhs.exam.exam2.dto.Article;
import com.jhs.exam.exam2.dto.Member;
import com.jhs.exam.exam2.dto.ResultData;
import com.jhs.exam.exam2.repository.ArticleRepository;
import com.jhs.exam.exam2.util.Ut;

public class ArticleService implements ContainerComponent {
private ArticleRepository articleRepository;

public void init() {
articleRepository = Container.articleRepository;
}

public ResultData write(int boardId, int memberId, String title, String body) {
// 받아온 변수를 이용해 게시물 작성하는 함수 후에 해당 게시물 번호를 리턴
int id = articleRepository.write(boardId, memberId, title, body);

// S-1, 완료 메세지, id값을 리턴
return ResultData.from("S-1", Ut.f("%d번 게시물이 생성되었습니다.", id), "id", id);
}

// 해당 변수를 받아 요구에 맞는 게시물 리스트를 리턴하는 메서드
public List<Article> getForPrintArticles(Member actor, int boardId, String searchKeywordTypeCode, String searchKeyword, int itemsCountInAPage, int page) {
int limitFrom = (page - 1) * itemsCountInAPage;
int limitTake = itemsCountInAPage;

// 요구에 맞는 게시물 리스트 변수에 저장
List<Article> articles = articleRepository.getForPrintArticles(boardId, searchKeywordTypeCode, searchKeyword, limitFrom, limitTake);

// 각 게시물마다 권한이 있는 member에 수정,삭제 버튼 보이게 해주는 메서드
for ( Article article : articles ) {
updateForPrintData(actor, article);
}

return articles;
}

// 해당 id의 게시물을 찾는 메서드
public Article getForPrintArticleById(Member actor, int id) {
// 해당 게시물 id로 해당 게시물 불러오기
Article article = articleRepository.getForPrintArticleById(id);

// 접속한 멤버와 게시물로 수정,삭제 여부 판단해주는 함수
updateForPrintData(actor, article);

// 게시물 리턴
return article;
}

// 접속한 멤버와 게시물로 수정,삭제 여부 판단해주는 함수
private void updateForPrintData(Member actor, Article article) {
// 멤버가 존재 하지 않으면 실행하지 않고 리턴
if (actor == null) {
return;
}

// 접속한 멤버와 게시물을 비교하여 수정,삭제 true,false여부 판단(F-로 시작시 false S-로 시작시 true)
boolean actorCanModify = actorCanModify(actor, article).isSuccess();
boolean actorCanDelete = actorCanDelete(actor, article).isSuccess();

// article변수에 해당 게시물의 작성자가 접속한 멤버일시 true저장 아닐시 false저장
article.setExtra__actorCanModify(actorCanModify);
article.setExtra__actorCanDelete(actorCanDelete);
}

// id번 게시물을 삭제하는 메서드
public ResultData delete(int id) {
articleRepository.delete(id);

// 삭제후 S-1, 메세지, id값 저장후 리턴
return ResultData.from("S-1", Ut.f("%d번 게시물이 삭제되었습니다.", id), "id", id);
}

// 게시물을 수정하는 메서드
public ResultData modify(int id, String title, String body) {
articleRepository.modify(id, title, body);

return ResultData.from("S-1", Ut.f("%d번 게시물이 수정되었습니다.", id), "id", id);
}

// 접속한 회원이 해당 게시물 수정 권한이 있는지 알려주는 메서드
public ResultData actorCanModify(Member member, Article article) {
// 접속한 멤버의 id와 게시물에 저장된 작성자(memberId)를 저장
int memberId = member.getId();
int writerMemberId = article.getMemberId();

// memberId와 writerMemberId가 다를시 F-1저장 후 리턴
if (memberId != writerMemberId) {
return ResultData.from("F-1", "권한이 없습니다.");
}

// memberId와 writerMemberId가 같을시 S-1 저장후 리턴
return ResultData.from("S-1", "수정이 가능합니다.");
}

// 접속한 회원이 해당 게시물 삭제 권한이 있는지 알려주는 메서드
public ResultData actorCanDelete(Member member, Article article) {
// 접속한 member의 id와 게시물 작성자(memberId)를 변수에 저장
int memberId = member.getId();
int writerMemberId = article.getMemberId();

// memberId와 writerMemberId가 다를시 F-1저장후 리턴
if (memberId != writerMemberId) {
return ResultData.from("F-1", "권한이 없습니다.");
}

// memberId와 writerMemberId가 같을시 S-1저장후 리턴
return ResultData.from("S-1", "삭제가 가능합니다.");
}

// 해당 변수에 일치하는 게시물의 수를 리턴하는 메서드
public int getArticlesCount(int boardId, String searchKeywordTypeCode, String searchKeyword) {
// 해당 변수를 이용하여 게시물 수를 구한뒤 리턴
return articleRepository.getArticlesCount(boardId, searchKeywordTypeCode, searchKeyword);
}

}

```

## 내가 모르는 것
- JSP 재구현 및 주석 

## 느낀점
- 하루 할당량이 많아서 좋다