diff --git a/src/main/java/edu/whut/smilepicturebackend/manager/upload/PictureUploadTemplate.java b/src/main/java/edu/whut/smilepicturebackend/manager/upload/PictureUploadTemplate.java
index 2364b6e..59116d2 100644
--- a/src/main/java/edu/whut/smilepicturebackend/manager/upload/PictureUploadTemplate.java
+++ b/src/main/java/edu/whut/smilepicturebackend/manager/upload/PictureUploadTemplate.java
@@ -25,6 +25,7 @@ import java.util.List;
  * 图片上传模板
  */
 @Slf4j
+@RequiredArgsConstructor
 public abstract class PictureUploadTemplate {
 
     @Resource
diff --git a/src/main/java/edu/whut/smilepicturebackend/manager/websocket/PictureEditHandler.java b/src/main/java/edu/whut/smilepicturebackend/manager/websocket/PictureEditHandler.java
index 2be2375..40a0731 100644
--- a/src/main/java/edu/whut/smilepicturebackend/manager/websocket/PictureEditHandler.java
+++ b/src/main/java/edu/whut/smilepicturebackend/manager/websocket/PictureEditHandler.java
@@ -40,12 +40,19 @@ public class PictureEditHandler extends TextWebSocketHandler {
     @Lazy
     private PictureEditEventProducer pictureEditEventProducer;
 
+    private final ObjectMapper objectMapper;
+
+    public PictureEditHandler(ObjectMapper objectMapper) {
+        this.objectMapper = objectMapper;
+    }
+
     // 每张图片的编辑状态，key: pictureId, value: 当前正在编辑的用户 ID
     private final Map<Long, Long> pictureEditingUsers = new ConcurrentHashMap<>();
 
     // 保存所有连接的会话，key: pictureId, value: 所有正在编辑这张图片的用户会话集合
     private final Map<Long, Set<WebSocketSession>> pictureSessions = new ConcurrentHashMap<>();
 
+
     /**
      * 实现连接建立成功后执行的方法，保存会话到集合中，并且给其他会话发送消息
      *
@@ -212,18 +219,10 @@ public class PictureEditHandler extends TextWebSocketHandler {
     private void broadcastToPicture(Long pictureId, PictureEditResponseMessage pictureEditResponseMessage, WebSocketSession excludeSession) throws IOException {
         Set<WebSocketSession> sessionSet = pictureSessions.get(pictureId);
         if (CollUtil.isNotEmpty(sessionSet)) {
-            // 创建 ObjectMapper
-            ObjectMapper objectMapper = new ObjectMapper();
-            // 配置序列化：将 Long 类型转为 String，解决丢失精度问题
-            SimpleModule module = new SimpleModule();
-            module.addSerializer(Long.class, ToStringSerializer.instance);
-            module.addSerializer(Long.TYPE, ToStringSerializer.instance); // 支持 long 基本类型
-            objectMapper.registerModule(module);
-            // 序列化为 JSON 字符串
-            String message = objectMapper.writeValueAsString(pictureEditResponseMessage);
-            TextMessage textMessage = new TextMessage(message);
+            // 使用全局注入的 objectMapper（已经配置 JavaTimeModule 和 Long→String）
+            String json = objectMapper.writeValueAsString(pictureEditResponseMessage);
+            TextMessage textMessage = new TextMessage(json);
             for (WebSocketSession session : sessionSet) {
-                // 排除掉的 session 不发送 （比如自己发送的广播，自己不接收）
                 if (excludeSession != null && session.equals(excludeSession)) {
                     continue;
                 }
diff --git a/src/main/java/edu/whut/smilepicturebackend/manager/websocket/disruptor/PictureEditEventProducer.java b/src/main/java/edu/whut/smilepicturebackend/manager/websocket/disruptor/PictureEditEventProducer.java
index caf0869..e9fe853 100644
--- a/src/main/java/edu/whut/smilepicturebackend/manager/websocket/disruptor/PictureEditEventProducer.java
+++ b/src/main/java/edu/whut/smilepicturebackend/manager/websocket/disruptor/PictureEditEventProducer.java
@@ -4,22 +4,22 @@ import com.lmax.disruptor.RingBuffer;
 import com.lmax.disruptor.dsl.Disruptor;
 import edu.whut.smilepicturebackend.manager.websocket.model.PictureEditRequestMessage;
 import edu.whut.smilepicturebackend.model.entity.User;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import org.springframework.web.socket.WebSocketSession;
 
 import javax.annotation.PreDestroy;
-import javax.annotation.Resource;
 
 /**
  * 图片编辑事件（生产者）
  */
 @Component
 @Slf4j
+@RequiredArgsConstructor
 public class PictureEditEventProducer {
 
-    @Resource
-    private Disruptor<PictureEditEvent> pictureEditEventDisruptor;
+    private final Disruptor<PictureEditEvent> pictureEditEventDisruptor;
 
     /**
      * 发布事件