From 0e52779267ece968b19237d20fc11f186b2d34ce Mon Sep 17 00:00:00 2001
From: huangfeng <beehuang74@hotmail.com>
Date: Mon, 9 Jun 2025 10:18:15 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=8F=96=E6=B6=88=E8=AE=A2=E9=98=85?=
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---
 .../shxy/xymanager_service/mqtt/MqttSubscriberService.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/xymanager_service/src/main/java/com/shxy/xymanager_service/mqtt/MqttSubscriberService.java b/xymanager_service/src/main/java/com/shxy/xymanager_service/mqtt/MqttSubscriberService.java
index 35165d6..c4cf2b4 100644
--- a/xymanager_service/src/main/java/com/shxy/xymanager_service/mqtt/MqttSubscriberService.java
+++ b/xymanager_service/src/main/java/com/shxy/xymanager_service/mqtt/MqttSubscriberService.java
@@ -66,7 +66,9 @@ public class MqttSubscriberService {
     @PreDestroy
     private void preDestroy() {
         try {
-            mqttClient.unsubscribe(topicList.toArray(new String[0]));
+            if (topicList.size() > 0) {
+                mqttClient.unsubscribe(topicList.toArray(new String[0]));
+            }
             if (mqttClient.isConnected()) {
                 mqttClient.disconnect();
             }