From 6d00eb4ba14d7fdf208c9c04e6baea9db2be16ce Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Wed, 7 Jan 2026 16:46:50 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=B7=BB=E5=8A=A0=E7=BC=BA=E5=A4=B1?=
 =?UTF-8?q?=E7=9A=84Set=E5=92=8CHashSet=E5=AF=BC=E5=85=A5?=
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---
 .../src/main/java/com/designhub/service/TaskItemService.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index ed51e54..4053857 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -18,8 +18,10 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDateTime;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 /**
  * 任务子项服务类（流水线任务）
@@ -507,7 +509,7 @@ public class TaskItemService {
 
                     // 发送通知给接单部门负责人
                     // 从子任务的任务类型配置中获取allowed_dept_ids
-                    Set<Long> notifiedLeaderIds = new java.util.HashSet<>();
+                    Set<Long> notifiedLeaderIds = new HashSet<>();
                     for (TaskItem nextItem : nextGroupItems) {
                         Long targetDeptId = getTargetDeptIdFromTaskType(nextItem.getTaskTypeId());
                         if (targetDeptId != null) {