src/main/java/ru/ulstu/paper/service/PaperService.java

@@ -67,6 +67,9 @@ public class PaperService {
     @Transactional
     public Integer update(PaperDto paperDto) throws IOException {
         Paper paper = paperRepository.findOne(paperDto.getId());
+        if(paper != null && paper.getStatus() != paperDto.getStatus()){
+            sendMessageAboutStatusChange(paper.getStatus(),paperDto);
+        }
         if (paperDto.getTmpFileName() != null && paper.getFileData() != null) {
             fileService.deleteFile(paper.getFileData());
         }