From 38eaaa87743252da53851047bd15b089ccf9697b Mon Sep 17 00:00:00 2001
From: ‘liusuyi’ <1951119284@qq.com>
Date: 星期四, 07 三月 2024 11:00:40 +0800
Subject: [PATCH] SDK云台控制和setptz增加错误码返回 增加部门和相机按角色数据权限查询

---
 ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java b/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
index 6c3522b..674b0de 100644
--- a/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
+++ b/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
@@ -46,7 +46,7 @@
      * @return
      */
     public static String getKeyByMinValue(Map<String, Double> map) {
-        if (map == null) return null;
+        if (map == null||map.size()==0) return null;
         List<Map.Entry<String, Double>> list = new ArrayList(map.entrySet());
         Collections.sort(list, (o1, o2) -> (o1.getValue().intValue() - o2.getValue().intValue()));
         String min = list.get(0).getKey();

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