refactor: 예외처리 방식 각 Domain에 알맞게 수정

Author: dnzp75

src/main/java/com/example/log4u/domain/diary/exception/DiaryErrorCode.java

@@ -0,0 +1,29 @@
+package com.example.log4u.domain.diary.exception;
+
+import org.springframework.http.HttpStatus;
+
+import com.example.log4u.common.exception.base.ErrorCode;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum DiaryErrorCode implements ErrorCode {
+
+	NOT_FOUND_DIARY(HttpStatus.NOT_FOUND, "다이어리를 찾을 수 없습니다.");
+
+	private final HttpStatus httpStatus;
+	private final String message;
+
+	@Override
+	public HttpStatus getHttpStatus() {
+		return httpStatus;
+	}
+
+	@Override
+	public String getErrorMessage() {
+		return message;
+	}
+}
+

src/main/java/com/example/log4u/domain/diary/exception/DiaryException.java

@@ -1,9 +1,11 @@
-// package com.example.log4u.domain.diary.exception;
-//
-// public class DiaryException extends ServiceException{
-//
-// 	DiaryException(ErrorCode errorCode){
-// 		super(errorCode);
-// 	}
-//
-// }
+package com.example.log4u.domain.diary.exception;
+
+import com.example.log4u.common.exception.base.ErrorCode;
+import com.example.log4u.common.exception.base.ServiceException;
+
+public class DiaryException extends ServiceException {
+	public DiaryException(ErrorCode errorCode) {
+		super(errorCode);
+	}
+}
+

src/main/java/com/example/log4u/domain/diary/exception/NotFoundDiaryException.java

@@ -1,4 +1,7 @@
-// package com.example.log4u.domain.diary.exception;
-//
-// public class NotFoundDiaryException extends DiaryException{
-// }
+package com.example.log4u.domain.diary.exception;
+
+public class NotFoundDiaryException extends DiaryException {
+	public NotFoundDiaryException() {
+		super(DiaryErrorCode.NOT_FOUND_DIARY);
+	}
+}

src/main/java/com/example/log4u/domain/diary/service/DiaryService.java

@@ -3,6 +3,7 @@
 import org.springframework.stereotype.Service;
 
 import com.example.log4u.domain.diary.entity.Diary;
+import com.example.log4u.domain.diary.exception.NotFoundDiaryException;
 import com.example.log4u.domain.diary.repository.DiaryRepository;
 
 import lombok.RequiredArgsConstructor;
@@ -16,7 +17,7 @@ public class DiaryService {
 
 	public Diary getDiary(Long diaryId) {
 		return diaryRepository.findById(diaryId)
-			.orElseThrow(IllegalArgumentException::new);
+			.orElseThrow(NotFoundDiaryException::new);
 	}
 
 	public Long incrementLikeCount(Long diaryId) {

src/main/java/com/example/log4u/domain/like/exception/DuplicateLikeException.java

@@ -0,0 +1,7 @@
+package com.example.log4u.domain.like.exception;
+
+public class DuplicateLikeException extends LikeException {
+	public DuplicateLikeException() {
+		super(LikeErrorCode.DUPLICATE_LIKE);
+	}
+}

src/main/java/com/example/log4u/domain/like/exception/LikeErrorCode.java

@@ -0,0 +1,31 @@
+package com.example.log4u.domain.like.exception;
+
+import org.springframework.http.HttpStatus;
+
+import com.example.log4u.common.exception.base.ErrorCode;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum LikeErrorCode implements ErrorCode {
+
+	NOT_FOUND_LIKE(HttpStatus.NOT_FOUND, "좋아요 정보를 찾을 수 없습니다."),
+	DUPLICATE_LIKE(HttpStatus.BAD_REQUEST, "이미 좋아요를 눌렀습니다.");
+
+
+	private final HttpStatus httpStatus;
+	private final String message;
+
+	@Override
+	public HttpStatus getHttpStatus() {
+		return httpStatus;
+	}
+
+	@Override
+	public String getErrorMessage() {
+		return message;
+	}
+}
+

src/main/java/com/example/log4u/domain/like/exception/LikeException.java

@@ -0,0 +1,10 @@
+package com.example.log4u.domain.like.exception;
+
+import com.example.log4u.common.exception.base.ErrorCode;
+import com.example.log4u.common.exception.base.ServiceException;
+
+public class LikeException extends ServiceException {
+	public LikeException(ErrorCode errorCode) {
+		super(errorCode);
+	}
+}

src/main/java/com/example/log4u/domain/like/service/LikeService.java

@@ -7,6 +7,7 @@
 import com.example.log4u.domain.like.dto.request.LikeAddRequestDto;
 import com.example.log4u.domain.like.dto.response.LikeAddResponseDto;
 import com.example.log4u.domain.like.entity.Like;
+import com.example.log4u.domain.like.exception.DuplicateLikeException;
 import com.example.log4u.domain.like.repository.LikeRepository;
 
 import lombok.RequiredArgsConstructor;
@@ -31,7 +32,7 @@ public LikeAddResponseDto addLike(Long userId, LikeAddRequestDto requestDto) {
 
 	private void validateDuplicateLike(Long userId, Long diaryId) {
 		if (likeRepository.existsByUserIdAndDiaryId(userId, diaryId)) {
-			throw new IllegalArgumentException();
+			throw new DuplicateLikeException();
 		}
 	}
 }