CLAP-200 Fix: 파일 배열에 대해 null 체크 추가

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- 관련: #202

Author: joowojr

src/main/java/clap/server/application/service/task/CreateTaskService.java

@@ -55,7 +55,10 @@ public CreateTaskResponse createTask(Long requesterId, CreateTaskRequest createT
         savedTask.setInitialProcessorOrder();
         commandTaskPort.save(savedTask);
 
-        saveAttachments(files, savedTask);
+        if (files != null) {
+            saveAttachments(files, savedTask);
+        }
+
         publishNotification(savedTask);
         return TaskMapper.toCreateTaskResponse(savedTask);
     }
@@ -66,7 +69,7 @@ private void saveAttachments(List<MultipartFile> files, Task task) {
         commandAttachmentPort.saveAll(attachments);
     }
 
-    private void publishNotification(Task task){
+    private void publishNotification(Task task) {
         List<Member> reviewers = memberService.findReviewers();
 
         // 검토자들 각각에 대한 알림 생성 후 event 발행
@@ -90,5 +93,4 @@ private void publishNotification(Task task){
     }
 
 
-
 }

src/main/java/clap/server/application/service/task/UpdateTaskService.java

@@ -122,9 +122,11 @@ private void updateAttachments(List<Long> attachmentIdsToDelete, List<MultipartF
         List<Attachment> attachmentsToDelete = validateAndGetAttachments(attachmentIdsToDelete, task);
         attachmentsToDelete.forEach(Attachment::softDelete);
 
-        List<String> fileUrls = s3UploadAdapter.uploadFiles(FilePathConstants.TASK_IMAGE, files);
-        List<Attachment> attachments = AttachmentMapper.toTaskAttachments(task, files, fileUrls);
-        commandAttachmentPort.saveAll(attachments);
+        if(files != null) {
+            List<String> fileUrls = s3UploadAdapter.uploadFiles(FilePathConstants.TASK_IMAGE, files);
+            List<Attachment> attachments = AttachmentMapper.toTaskAttachments(task, files, fileUrls);
+            commandAttachmentPort.saveAll(attachments);
+        }
     }
 
     private List<Attachment> validateAndGetAttachments(List<Long> attachmentIdsToDelete, Task task) {