[Feat] 나의 구독한 학과 리스트 업 정렬 기능

src/main/java/com/linku/backend/domain/alert/service/AlertService.java

@@ -47,7 +47,7 @@ public AlertListResponse getMyAlerts(Long userId){
                 .orElseThrow(()-> LinkuException.of(ResponseCode.USER_NOT_FOUND));
 
         // 1) 구독 정보 조회
-        List<Subscribe> subscribes = subscribeRepository.findByUser_UserId(userId);
+        List<Subscribe> subscribes = subscribeRepository.findByUser_UserIdOrderByDepartmentConfig_IdAsc(userId);
 
         // 2) 구독한 departmentConfigId 리스트 뽑기
         List<Long> departmentConfigIds = subscribes.stream()
@@ -69,7 +69,7 @@ public AlertListResponse getMyAlertsWithDepartments(Long userId, List<String> de
                 .orElseThrow(() -> LinkuException.of(ResponseCode.USER_NOT_FOUND));
 
         // 1) 내 구독 DepartmentConfig ID들
-        List<Long> subscribedIds = subscribeRepository.findByUser_UserId(userId).stream()
+        List<Long> subscribedIds = subscribeRepository.findByUser_UserIdOrderByDepartmentConfig_IdAsc(userId).stream()
                 .map(s -> s.getDepartmentConfig().getId())
                 .toList();
 

src/main/java/com/linku/backend/domain/deapartmentConfig/service/DepartmentConfigService.java

@@ -12,6 +12,7 @@
 import com.linku.backend.global.response.ResponseCode;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -28,7 +29,7 @@ public class DepartmentConfigService {
 
     @Transactional(readOnly = true)
     public DepartmentConfigListResponse getAllDepartmentConfigs() {
-        List<DepartmentConfig> departmentConfigList = departmentConfigRepository.findAll();
+        List<DepartmentConfig> departmentConfigList = departmentConfigRepository.findAll(Sort.by(Sort.Direction.ASC, "id"));
 
         List<DepartmentConfigResponse> list = departmentConfigList.stream()
                 .map(department -> DepartmentConfigResponse.of(department.getId(), department.getName()))
@@ -41,7 +42,7 @@ public DepartmentConfigListResponse getAllMyDepartmentConfigs(Long userId) {
         User user = userRepository.findById(userId)
                 .orElseThrow(()-> LinkuException.of(ResponseCode.USER_NOT_FOUND));
 
-        List<Subscribe> subscribeList = subscribeRepository.findByUser_UserId(userId);
+        List<Subscribe> subscribeList = subscribeRepository.findByUser_UserIdOrderByDepartmentConfig_IdAsc(userId);
 
         List<DepartmentConfigResponse> list = subscribeList.stream()
                 .map(subscribe -> DepartmentConfigResponse.of(subscribe.getDepartmentConfig().getId(), subscribe.getDepartmentConfig().getName()))

src/main/java/com/linku/backend/domain/subscribe/repository/SubscribeRepository.java

@@ -6,7 +6,7 @@
 import java.util.List;
 
 public interface SubscribeRepository extends JpaRepository<Subscribe, Long> {
-    List<Subscribe> findByUser_UserId(Long userId);
+    List<Subscribe> findByUser_UserIdOrderByDepartmentConfig_IdAsc(Long userId);
     void deleteByUser_UserIdAndDepartmentConfig_Id(Long userId, Long departmentConfigId);
     boolean existsByUser_UserIdAndDepartmentConfig_Id(Long userId, Long configId);
 }

src/main/java/com/linku/backend/global/resolver/CurrentUserIdArgumentResolver.java

@@ -1,13 +1,18 @@
 package com.linku.backend.global.resolver;
 
 import com.linku.backend.global.auth.AuthUser;
+import com.linku.backend.global.exception.LinkuException;
 import org.springframework.core.MethodParameter;
+import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Component;
 import org.springframework.web.bind.support.WebDataBinderFactory;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.web.method.support.ModelAndViewContainer;
+import com.linku.backend.global.response.ResponseCode;
+
+import java.nio.file.attribute.UserPrincipal;
 
 @Component
 public class CurrentUserIdArgumentResolver implements HandlerMethodArgumentResolver {
@@ -23,7 +28,13 @@ public Object resolveArgument(MethodParameter parameter,
                                   NativeWebRequest webRequest,
                                   WebDataBinderFactory binderFactory) throws Exception {
 
-        AuthUser principal = (AuthUser) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+
+        if (authentication == null || !authentication.isAuthenticated()) {
+            throw LinkuException.of(ResponseCode.GOOGLE_INVALID_USER_INFO_RESPONSE);
+        }
+
+        AuthUser principal = (AuthUser) authentication.getPrincipal();
         return principal.getId();
     }
 }