diff --git a/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/PalletAutoGoToWCSImpl.java b/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/PalletAutoGoToWCSImpl.java
index a818db3..85a678c 100644
--- a/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/PalletAutoGoToWCSImpl.java
+++ b/src/main/java/com/gaotao/modules/automatedWarehouse/service/impl/PalletAutoGoToWCSImpl.java
@@ -132,7 +132,17 @@ public class PalletAutoGoToWCSImpl implements PalletAutoGoToWCS {
 
         //组盘里面判断 结束组盘 才会修改栈板不可用标记
         if("Y".equals(endFlag)) {
-            String username = ((SysUserEntity) SecurityUtils.getSubject().getPrincipal()).getUsername();
+            // 获取当前用户，定时任务场景下使用默认值 - rqrq
+            String username = "sys_wms";
+            try {
+                SysUserEntity currentUser = (SysUserEntity) SecurityUtils.getSubject().getPrincipal();
+                if (currentUser != null) {
+                    username = currentUser.getUsername();
+                }
+            } catch (Exception e) {
+                // 定时任务或异步线程中无法获取Shiro上下文，使用默认用户 - rqrq
+                username = "sys_wms";
+            }
             // 更新栈板calling_flag为Y
             wcsIntegrationMapper.updatePalletCallingFlag(site, palletId, "Y", "组盘操作", username);
             palletOperationLogService.logPalletOperation(palletId, site,"调用托盘","组盘操作","是否调用","N","Y",username,"");