diff --git a/src/main/java/com/youlai/boot/common/aspect/LogAspect.java b/src/main/java/com/youlai/boot/common/aspect/LogAspect.java
index 779d8b94..cb1bb990 100644
--- a/src/main/java/com/youlai/boot/common/aspect/LogAspect.java
+++ b/src/main/java/com/youlai/boot/common/aspect/LogAspect.java
@@ -54,6 +54,13 @@ public class LogAspect {
     public void pointcut(Log logAnnotation) {
     }
 
+    /**
+     * 无用户上下文（如设备通过 X-Device-SN 上报）时的兜底操作人ID。
+     * 设备类接口没有登录会话，operatorId 无法获取，用该常量保证日志可落库。
+     */
+    private static final long UNKNOWN_OPERATOR_ID = 99L;
+    private static final String DEVICE_SN_HEADER = "X-Device-SN";
+
     @Around(value = "pointcut(logAnnotation)", argNames = "jp,logAnnotation")
     public Object around(ProceedingJoinPoint jp, Log logAnnotation) throws Throwable {
         long start = System.currentTimeMillis();
@@ -101,8 +108,10 @@ public class LogAspect {
         entity.setActionType(action);
         entity.setTitle(StrUtil.blankToDefault(ann.title(), module.getLabel() + "-" + action.getLabel()));
         entity.setContent(ann.content());
-        entity.setOperatorId(userId);
-        entity.setOperatorName(username);
+        // 设备类接口无登录用户，userId 为 null；兜底为常量为保证日志可落库
+        entity.setOperatorId(userId != null ? userId : UNKNOWN_OPERATOR_ID);
+        // 无用户时尝试用设备SN标识操作来源
+        entity.setOperatorName(username != null ? username : resolveDeviceSn(req));
         entity.setRequestUri(req.getRequestURI());
         entity.setRequestMethod(req.getMethod());
         entity.setIp(ip);
@@ -146,6 +155,14 @@ public class LogAspect {
         return Optional.ofNullable(ua).map(UserAgent::getBrowser).map(b -> b.getName()).orElse(null);
     }
 
+    /**
+     * 从设备上报请求头解析设备SN，用于无登录用户时标识操作来源。
+     */
+    private String resolveDeviceSn(HttpServletRequest req) {
+        String sn = req.getHeader(DEVICE_SN_HEADER);
+        return StrUtil.isBlank(sn) ? null : "设备-" + sn;
+    }
+
     private record IpRegion(String province, String city) {
         static final IpRegion EMPTY = new IpRegion(null, null);
     }
diff --git a/src/main/java/com/youlai/boot/common/config/FilePath.java b/src/main/java/com/youlai/boot/common/config/FilePath.java
index 35ea4b60..00617815 100644
--- a/src/main/java/com/youlai/boot/common/config/FilePath.java
+++ b/src/main/java/com/youlai/boot/common/config/FilePath.java
@@ -7,7 +7,7 @@ import java.io.File;
 
 public class FilePath {
 //    @Value("${file.upload-dir-unix}")
-    private static final String unixUploadDir = "/data/uploads" ;
+    private static final String unixUploadDir = "/tmp/ttstd/uploads" ;
 
 //    @Value("${file.upload-dir-windows}")
     private static final String windowsUploadDir = "uploadFile";