[feat]: 해당 기수에 맞는 지원서가 없는 경우 예외처리

server/Recruit-Domain/src/main/java/com/econovation/recruitdomain/domains/applicant/adaptor/AnswerAdaptor.java

@@ -6,6 +6,8 @@
 import com.econovation.recruitdomain.domains.applicant.domain.MongoAnswer;
 import com.econovation.recruitdomain.domains.applicant.domain.MongoAnswerRepository;
 import java.util.List;
+
+import com.econovation.recruitdomain.domains.applicant.exception.ApplicantNotFoundException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
@@ -48,7 +50,11 @@ public List<MongoAnswer> findByYear(Integer year) {
         Query query =
                 new Query()
                         .addCriteria(Criteria.where("year").is(year));
-        return mongoTemplate.find(query, MongoAnswer.class);
+        List<MongoAnswer> result =  mongoTemplate.find(query, MongoAnswer.class);
+        if(result.isEmpty()) {
+            throw ApplicantNotFoundException.EXCEPTION;
+        }
+        return result;
     }
 
     public long getTotalCountByYear(Integer year) {