[REFACTOR]/#86 - Exception 구조 변경

build.gradle

@@ -37,7 +37,7 @@ dependencies {
     runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.5'
     runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.11.5'
 
-    // reids
+    // redis
     implementation 'org.springframework.boot:spring-boot-starter-data-redis:2.3.1.RELEASE'
 
     // lombok
@@ -56,6 +56,9 @@ dependencies {
     // jackson
     implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.8'
 
+    // validation
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
+
     runtimeOnly 'com.h2database:h2'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"

src/main/java/org/example/tree/domain/comment/service/CommentService.java

@@ -16,6 +16,8 @@
 import org.example.tree.domain.profile.service.ProfileService;
 import org.example.tree.domain.reaction.dto.ReactionResponseDTO;
 import org.example.tree.domain.reaction.service.ReactionService;
+import org.example.tree.global.exception.AuthErrorCode;
+import org.example.tree.global.exception.AuthException;
 import org.example.tree.global.exception.GeneralException;
 import org.example.tree.global.exception.GlobalErrorCode;
 import org.springframework.stereotype.Component;
@@ -66,7 +68,7 @@ public void updateComment(Long treeId, Long postId, Long commentId, CommentReque
         Post post = postQueryService.findById(postId);
         Comment comment = commentQueryService.findById(commentId);
         if (!comment.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         comment.updateComment(request.getContent());
     }
@@ -77,7 +79,7 @@ public void deleteComment(Long treeId, Long postId, Long commentId, Member membe
         Post post = postQueryService.findById(postId);
         Comment comment = commentQueryService.findById(commentId);
         if (!comment.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         post.decreaseCommentCount();
         commentCommandService.deleteComment(comment);

src/main/java/org/example/tree/domain/comment/service/ReplyService.java

@@ -12,6 +12,8 @@
 import org.example.tree.domain.profile.service.ProfileService;
 import org.example.tree.domain.reaction.dto.ReactionResponseDTO;
 import org.example.tree.domain.reaction.service.ReactionService;
+import org.example.tree.global.exception.AuthErrorCode;
+import org.example.tree.global.exception.AuthException;
 import org.example.tree.global.exception.GeneralException;
 import org.example.tree.global.exception.GlobalErrorCode;
 import org.springframework.stereotype.Component;
@@ -54,7 +56,7 @@ public void updateReply(Long treeId, Long commentId, Long replyId, ReplyRequestD
         Comment comment = commentQueryService.findById(commentId);
         Reply reply = replyQueryService.findById(replyId);
         if (!reply.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         reply.updateReply(request.getContent());
     }
@@ -65,7 +67,7 @@ public void deleteReply(Long treeId, Long commentId, Long replyId, Member member
         Comment comment = commentQueryService.findById(commentId);
         Reply reply = replyQueryService.findById(replyId);
         if (!reply.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         replyCommandService.deleteReply(reply);
     }

src/main/java/org/example/tree/domain/member/service/MemberService.java

@@ -7,6 +7,8 @@
 import org.example.tree.domain.member.dto.MemberResponseDTO;
 import org.example.tree.domain.member.entity.Member;
 import org.example.tree.domain.member.entity.redis.RefreshToken;
+import org.example.tree.global.exception.AuthErrorCode;
+import org.example.tree.global.exception.AuthException;
 import org.example.tree.global.exception.GeneralException;
 import org.example.tree.global.exception.GlobalErrorCode;
 import org.example.tree.global.redis.service.RedisService;
@@ -47,7 +49,7 @@ public MemberResponseDTO.registerMember login(MemberRequestDTO.loginMember reque
 
     @Transactional
     public MemberResponseDTO.reissue reissue(MemberRequestDTO.reissue request) {
-        RefreshToken refreshToken = redisService.findRefreshToken(request.getRefreshToken()).orElseThrow(() -> new GeneralException(GlobalErrorCode.REFRESH_TOKEN_EXPIRED));
+        RefreshToken refreshToken = redisService.findRefreshToken(request.getRefreshToken()).orElseThrow(() -> new AuthException(AuthErrorCode.REFRESH_TOKEN_EXPIRED));
         Member member = memberQueryService.findById(refreshToken.getMemberId());
         TokenDTO token = memberCommandService.reissueToken(member,refreshToken);
         return memberConverter.toReissue(token.getAccessToken(), token.getRefreshToken());

src/main/java/org/example/tree/domain/post/service/PostService.java

@@ -15,6 +15,8 @@
 import org.example.tree.domain.profile.service.ProfileService;
 import org.example.tree.domain.reaction.dto.ReactionResponseDTO;
 import org.example.tree.domain.reaction.service.ReactionService;
+import org.example.tree.global.exception.AuthErrorCode;
+import org.example.tree.global.exception.AuthException;
 import org.example.tree.global.exception.GeneralException;
 import org.example.tree.global.exception.GlobalErrorCode;
 import org.springframework.stereotype.Component;
@@ -93,7 +95,7 @@ public void updatePost(Long treeId, Long postId, PostRequestDTO.updatePost reque
         Profile profile = profileService.getTreeProfile(member, treeId);
         Post post = postQueryService.findById(postId);
         if (!post.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         post.updatePost(request.getContent());
     }
@@ -103,7 +105,7 @@ public void deletePost(Long treeId, Long postId, Member member) {
         Profile profile = profileService.getTreeProfile(member, treeId);
         Post post = postQueryService.findById(postId);
         if (!post.getProfile().getId().equals(profile.getId())) {
-            throw new GeneralException(GlobalErrorCode.AUTHENTICATION_REQUIRED);
+            throw new AuthException(AuthErrorCode.AUTHENTICATION_REQUIRED);
         }
         postCommandService.deletePost(post);
     }

src/main/java/org/example/tree/domain/tree/service/TreeQueryService.java

@@ -17,7 +17,7 @@ public class TreeQueryService {
 
     public Tree findById(Long id) {
         return treeRepository.findById(id)
-                .orElseThrow(()->new GeneralException(GlobalErrorCode.TREE_NOT_FOUND));
+                .orElseThrow(()->new GeneralException(GlobalErrorCode.TREEHOUSE_NOT_FOUND));
     }
 
 }

src/main/java/org/example/tree/global/common/ApiResponse.java

@@ -53,8 +53,8 @@ public static <T> ApiResponse<T> onSuccess(T data){
     }
 
     // 실패한 경우 응답 생성
-    public static <T> ApiResponse<T> onFailure(GlobalErrorCode code, T data){
-        return new ApiResponse<>(false, String.valueOf(code.getHttpStatus().value()), code.getMessage(), LocalDateTime.now(), data);
+    public static <T> ApiResponse<T> onFailure(String code, String message, T data){
+        return new ApiResponse<>(false,code, message, LocalDateTime.now(), data);
     }
 
 }

src/main/java/org/example/tree/global/exception/AuthErrorCode.java

@@ -0,0 +1,49 @@
+package org.example.tree.global.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+import static org.springframework.http.HttpStatus.*;
+
+@Getter
+@AllArgsConstructor
+public enum AuthErrorCode implements BaseErrorCode{
+    // 401 Unauthorized - 권한 없음
+    TOKEN_EXPIRED(UNAUTHORIZED, "AUTH401_1", "인증 토큰이 만료 되었습니다. 토큰을 재발급 해주세요"),
+    INVALID_TOKEN(UNAUTHORIZED, "AUTH401_2", "인증 토큰이 유효하지 않습니다."),
+    INVALID_REFRESH_TOKEN(UNAUTHORIZED, "AUTH401_3", "리프레시 토큰이 유효하지 않습니다."),
+    REFRESH_TOKEN_EXPIRED(UNAUTHORIZED, "AUTH401_4", "리프레시 토큰이 만료 되었습니다."),
+    AUTHENTICATION_REQUIRED(UNAUTHORIZED, "AUTH401_5", "인증 정보가 유효하지 않습니다."),
+    LOGIN_REQUIRED(UNAUTHORIZED, "AUTH401_6", "로그인이 필요한 서비스입니다."),
+
+    // 403 Forbidden - 인증 거부
+    AUTHENTICATION_DENIED(FORBIDDEN, "AUTH403_1", "인증이 거부 되었습니다."),
+
+    // 404 Not Found - 찾을 수 없음
+    REFRESH_TOKEN_NOT_FOUND(NOT_FOUND, "AUTH404_1", "리프레시 토큰이 존재하지 않습니다."),
+    ;
+
+    private final HttpStatus httpStatus;
+    private final String code;
+    private final String message;
+
+    @Override
+    public ErrorReasonDTO getReason() {
+        return ErrorReasonDTO.builder()
+                .message(message)
+                .code(code)
+                .isSuccess(false)
+                .build();
+    }
+
+    @Override
+    public ErrorReasonDTO getReasonHttpStatus() {
+        return ErrorReasonDTO.builder()
+                .message(message)
+                .code(code)
+                .httpStatus(httpStatus)
+                .isSuccess(false)
+                .build();
+    }
+}

src/main/java/org/example/tree/global/exception/AuthException.java

@@ -0,0 +1,8 @@
+package org.example.tree.global.exception;
+
+public class AuthException extends GeneralException{
+
+    public AuthException(BaseErrorCode errorCode) {
+        super(errorCode);
+    }
+}

src/main/java/org/example/tree/global/exception/BaseErrorCode.java

@@ -0,0 +1,8 @@
+package org.example.tree.global.exception;
+
+public interface BaseErrorCode {
+
+    public ErrorReasonDTO getReason();
+
+    public ErrorReasonDTO getReasonHttpStatus();
+}

src/main/java/org/example/tree/global/exception/ErrorReasonDTO.java

@@ -0,0 +1,16 @@
+package org.example.tree.global.exception;
+
+import lombok.Builder;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@Builder
+public class ErrorReasonDTO {
+
+    private HttpStatus httpStatus;
+
+    private final boolean isSuccess;
+    private final String code;
+    private final String message;
+}

src/main/java/org/example/tree/global/exception/GeneralException.java

@@ -6,5 +6,14 @@
 @Getter
 @AllArgsConstructor
 public class GeneralException extends RuntimeException {
-private final GlobalErrorCode errorCode;
+
+    private final BaseErrorCode errorCode;
+
+    public ErrorReasonDTO getErrorReason() {
+        return this.errorCode.getReason();
+    }
+
+    public ErrorReasonDTO getErrorReasonHttpStatus() {
+        return this.errorCode.getReasonHttpStatus();
+    }
 }

src/main/java/org/example/tree/global/exception/GeneralExceptionHandler.java

@@ -96,21 +96,22 @@ public ResponseEntity onThrowException(
             GeneralException generalException,
             @AuthenticationPrincipal User user,
             HttpServletRequest request) {
-        getExceptionStackTrace(generalException, user, request);
-        GlobalErrorCode errorCode = generalException.getErrorCode();
-        return handleExceptionInternal(generalException, errorCode, null, request);
+//        getExceptionStackTrace(generalException, user, request);
+//        GlobalErrorCode errorCode = generalException.getErrorCode();
+        ErrorReasonDTO errorReasonHttpStatus = generalException.getErrorReasonHttpStatus();
+        return handleExceptionInternal(generalException, errorReasonHttpStatus, null, request);
     }
 
     private ResponseEntity<Object> handleExceptionInternal(
-            Exception e, GlobalErrorCode errorCode, HttpHeaders headers, HttpServletRequest request) {
+            Exception e, ErrorReasonDTO reason, HttpHeaders headers, HttpServletRequest request) {
 
         ApiResponse<Object> body =
-                ApiResponse.onFailure(errorCode, null);
+                ApiResponse.onFailure(reason.getCode(), reason.getMessage(), null);
         e.printStackTrace();
 
         WebRequest webRequest = new ServletWebRequest(request);
         return super.handleExceptionInternal(
-                e, body, headers, errorCode.getHttpStatus(), webRequest);
+                e, body, headers, reason.getHttpStatus(), webRequest);
     }
 
     private ResponseEntity<Object> handleExceptionInternalFalse(
@@ -121,7 +122,7 @@ private ResponseEntity<Object> handleExceptionInternalFalse(
             WebRequest request,
             String errorPoint) {
         ApiResponse<Object> body =
-                ApiResponse.onFailure(errorCode, errorPoint);
+                ApiResponse.onFailure(errorCode.getCode(), errorCode.getMessage(), errorPoint);
         return super.handleExceptionInternal(e, body, headers, status, request);
     }
 
@@ -132,14 +133,14 @@ private ResponseEntity<Object> handleExceptionInternalArgs(
             WebRequest request,
             Map<String, String> errorArgs) {
         ApiResponse<Object> body =
-                ApiResponse.onFailure(errorCode, errorArgs);
+                ApiResponse.onFailure(errorCode.getCode(), errorCode.getMessage(), errorArgs);
         return super.handleExceptionInternal(e, body, headers, errorCode.getHttpStatus(), request);
     }
 
     private ResponseEntity<Object> handleExceptionInternalConstraint(
             Exception e, GlobalErrorCode errorCode, HttpHeaders headers, WebRequest request) {
         ApiResponse<Object> body =
-                ApiResponse.onFailure(errorCode, null);
+                ApiResponse.onFailure(errorCode.getCode(), errorCode.getMessage(), null);
         return super.handleExceptionInternal(e, body, headers, errorCode.getHttpStatus(), request);
     }