prgrms-web-devcourse-final-project · asowjdan · Oct 11, 2025 · Oct 10, 2025 · Oct 10, 2025
diff --git a/backend/src/main/java/com/ai/lawyer/domain/chatbot/entity/Chat.java b/backend/src/main/java/com/ai/lawyer/domain/chatbot/entity/Chat.java
@@ -33,10 +33,10 @@ public class Chat {
     @Lob
     private String message;
 
-    @OneToMany(mappedBy = "chatId")
+    @OneToMany(mappedBy = "chatId", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<ChatPrecedent> chatPrecedents;
 
-    @OneToMany(mappedBy = "chatId")
+    @OneToMany(mappedBy = "chatId", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<ChatLaw> chatLaws;
 
     @CreationTimestamp

diff --git a/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatLawRepository.java b/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatLawRepository.java
@@ -2,8 +2,18 @@
 
 import com.ai.lawyer.domain.chatbot.entity.ChatLaw;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 @Repository
 public interface ChatLawRepository extends JpaRepository<ChatLaw, Long> {
+
+    /**
+     * member_id에 해당하는 모든 ChatLaw 삭제 (회원 탈퇴 시 사용)
+     */
+    @Modifying
+    @Query("DELETE FROM ChatLaw cl WHERE cl.chatId.historyId.memberId.memberId = :memberId")
+    void deleteByMemberIdValue(@Param("memberId") Long memberId);
 }
diff --git a/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatPrecedentRepository.java b/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatPrecedentRepository.java
@@ -2,6 +2,16 @@
 
 import com.ai.lawyer.domain.chatbot.entity.ChatPrecedent;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 public interface ChatPrecedentRepository extends JpaRepository<ChatPrecedent, Long> {
+
+    /**
+     * member_id에 해당하는 모든 ChatPrecedent 삭제 (회원 탈퇴 시 사용)
+     */
+    @Modifying
+    @Query("DELETE FROM ChatPrecedent cp WHERE cp.chatId.historyId.memberId.memberId = :memberId")
+    void deleteByMemberIdValue(@Param("memberId") Long memberId);
 }
diff --git a/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatRepository.java b/backend/src/main/java/com/ai/lawyer/domain/chatbot/repository/ChatRepository.java
@@ -2,8 +2,18 @@
 
 import com.ai.lawyer.domain.chatbot.entity.Chat;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 @Repository
 public interface ChatRepository extends JpaRepository<Chat, Long> {
+
+    /**
+     * member_id에 해당하는 모든 Chat 삭제 (회원 탈퇴 시 사용)
+     */
+    @Modifying
+    @Query("DELETE FROM Chat c WHERE c.historyId.memberId.memberId = :memberId")
+    void deleteByMemberIdValue(@Param("memberId") Long memberId);
 }
diff --git a/backend/src/main/java/com/ai/lawyer/domain/member/service/MemberService.java b/backend/src/main/java/com/ai/lawyer/domain/member/service/MemberService.java
@@ -8,6 +8,9 @@
 import com.ai.lawyer.domain.post.repository.PostRepository;
 import com.ai.lawyer.domain.poll.repository.PollVoteRepository;
 import com.ai.lawyer.domain.chatbot.repository.HistoryRepository;
+import com.ai.lawyer.domain.chatbot.repository.ChatRepository;
+import com.ai.lawyer.domain.chatbot.repository.ChatPrecedentRepository;
+import com.ai.lawyer.domain.chatbot.repository.ChatLawRepository;
 import com.ai.lawyer.global.jwt.TokenProvider;
 import com.ai.lawyer.global.jwt.CookieUtil;
 import com.ai.lawyer.global.email.service.EmailService;
@@ -33,6 +36,9 @@ public class MemberService {
     private final PostRepository postRepository;
     private final PollVoteRepository pollVoteRepository;
     private final HistoryRepository historyRepository;
+    private final ChatRepository chatRepository;
+    private final ChatPrecedentRepository chatPrecedentRepository;
+    private final ChatLawRepository chatLawRepository;
 
     public MemberService(
             MemberRepository memberRepository,
@@ -43,7 +49,10 @@ public MemberService(
             EmailAuthService emailAuthService,
             PostRepository postRepository,
             PollVoteRepository pollVoteRepository,
-            HistoryRepository historyRepository) {
+            HistoryRepository historyRepository,
+            ChatRepository chatRepository,
+            ChatPrecedentRepository chatPrecedentRepository,
+            ChatLawRepository chatLawRepository) {
         this.memberRepository = memberRepository;
         this.passwordEncoder = passwordEncoder;
         this.tokenProvider = tokenProvider;
@@ -53,6 +62,9 @@ public MemberService(
         this.postRepository = postRepository;
         this.pollVoteRepository = pollVoteRepository;
         this.historyRepository = historyRepository;
+        this.chatRepository = chatRepository;
+        this.chatPrecedentRepository = chatPrecedentRepository;
+        this.chatLawRepository = chatLawRepository;
     }
 
     @org.springframework.beans.factory.annotation.Autowired(required = false)
@@ -225,37 +237,32 @@ public void deleteMember(String loginId) {
         // 2. 연관된 데이터 명시적 삭제 (순서 중요: FK 제약조건 고려)
         log.info("연관 데이터 삭제 시작: memberId={}", memberId);
 
-        // 2-1. 채팅 히스토리 삭제 (Chat 엔티티도 cascade로 함께 삭제됨)
-        try {
-            historyRepository.deleteByMemberIdValue(memberId);
-            log.info("채팅 히스토리 삭제 완료: memberId={}", memberId);
-        } catch (Exception e) {
-            log.error("채팅 히스토리 삭제 실패: memberId={}, error={}", memberId, e.getMessage());
-        }
+        // 2-1. ChatPrecedent, ChatLaw 삭제 (Chat의 FK 참조)
+        chatPrecedentRepository.deleteByMemberIdValue(memberId);
+        log.info("채팅 판례 삭제 완료: memberId={}", memberId);
 
-        // 2-2. 투표 내역 삭제
-        try {
-            pollVoteRepository.deleteByMemberIdValue(memberId);
-            log.info("투표 내역 삭제 완료: memberId={}", memberId);
-        } catch (Exception e) {
-            log.error("투표 내역 삭제 실패: memberId={}, error={}", memberId, e.getMessage());
-        }
+        chatLawRepository.deleteByMemberIdValue(memberId);
+        log.info("채팅 법령 삭제 완료: memberId={}", memberId);
 
-        // 2-3. 게시글 삭제 (Poll 엔티티도 cascade로 함께 삭제됨)
-        try {
-            postRepository.deleteByMemberIdValue(memberId);
-            log.info("게시글 삭제 완료: memberId={}", memberId);
-        } catch (Exception e) {
-            log.error("게시글 삭제 실패: memberId={}, error={}", memberId, e.getMessage());
-        }
+        // 2-2. Chat 삭제 (History의 FK 참조)
+        chatRepository.deleteByMemberIdValue(memberId);
+        log.info("채팅 삭제 완료: memberId={}", memberId);
+
+        // 2-3. History 삭제 (Member의 FK 참조)
+        historyRepository.deleteByMemberIdValue(memberId);
+        log.info("채팅 히스토리 삭제 완료: memberId={}", memberId);
+
+        // 2-4. 투표 내역 삭제
+        pollVoteRepository.deleteByMemberIdValue(memberId);
+        log.info("투표 내역 삭제 완료: memberId={}", memberId);
+
+        // 2-5. 게시글 삭제 (Poll 엔티티도 cascade로 함께 삭제됨)
+        postRepository.deleteByMemberIdValue(memberId);
+        log.info("게시글 삭제 완료: memberId={}", memberId);
 
         // 3. Redis 토큰 삭제
-        try {
-            tokenProvider.deleteAllTokens(loginId);
-            log.info("Redis 토큰 삭제 완료: loginId={}", loginId);
-        } catch (Exception e) {
-            log.error("Redis 토큰 삭제 실패: loginId={}, error={}", loginId, e.getMessage());
-        }
+        tokenProvider.deleteAllTokens(loginId);
+        log.info("Redis 토큰 삭제 완료: loginId={}", loginId);
 
         // 4. 회원 정보 삭제
         final Long finalMemberId = memberId;

diff --git a/backend/src/test/java/com/ai/lawyer/domain/member/service/MemberServiceOAuth2Test.java b/backend/src/test/java/com/ai/lawyer/domain/member/service/MemberServiceOAuth2Test.java
@@ -66,6 +66,15 @@ class MemberServiceOAuth2Test {
     @Mock
     private com.ai.lawyer.domain.chatbot.repository.HistoryRepository historyRepository;
 
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatRepository chatRepository;
+
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatPrecedentRepository chatPrecedentRepository;
+
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatLawRepository chatLawRepository;
+
     @Mock
     private HttpServletResponse response;
 
@@ -86,7 +95,10 @@ void setUp() {
                 emailAuthService,
                 postRepository,
                 pollVoteRepository,
-                historyRepository
+                historyRepository,
+                chatRepository,
+                chatPrecedentRepository,
+                chatLawRepository
         );
         memberService.setOauth2MemberRepository(oauth2MemberRepository);
 

diff --git a/backend/src/test/java/com/ai/lawyer/domain/member/service/MemberServiceTest.java b/backend/src/test/java/com/ai/lawyer/domain/member/service/MemberServiceTest.java
@@ -61,6 +61,15 @@ class MemberServiceTest {
     @Mock
     private com.ai.lawyer.domain.chatbot.repository.HistoryRepository historyRepository;
 
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatRepository chatRepository;
+
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatPrecedentRepository chatPrecedentRepository;
+
+    @Mock
+    private com.ai.lawyer.domain.chatbot.repository.ChatLawRepository chatLawRepository;
+
     @Mock
     private HttpServletResponse response;
 
@@ -85,7 +94,10 @@ void setUp() {
                 emailAuthService,
                 postRepository,
                 pollVoteRepository,
-                historyRepository
+                historyRepository,
+                chatRepository,
+                chatPrecedentRepository,
+                chatLawRepository
         );
         memberService.setOauth2MemberRepository(oauth2MemberRepository);
 
@@ -315,7 +327,10 @@ void withdraw_Success() {
         // 1. 회원 조회
         verify(memberRepository).findByLoginId(loginId);
 
-        // 2. 연관 데이터 명시적 삭제 (순서 중요)
+        // 2. 연관 데이터 명시적 삭제 (순서 중요: FK 제약조건 고려)
+        verify(chatPrecedentRepository).deleteByMemberIdValue(member.getMemberId());
+        verify(chatLawRepository).deleteByMemberIdValue(member.getMemberId());
+        verify(chatRepository).deleteByMemberIdValue(member.getMemberId());
         verify(historyRepository).deleteByMemberIdValue(member.getMemberId());
         verify(pollVoteRepository).deleteByMemberIdValue(member.getMemberId());
         verify(postRepository).deleteByMemberIdValue(member.getMemberId());