diff --git a/broker/src/main/java/com/xiaoleilu/loServer/action/UploadFileAction.java b/broker/src/main/java/com/xiaoleilu/loServer/action/UploadFileAction.java
index 04c31c9a..a40107e9 100755
--- a/broker/src/main/java/com/xiaoleilu/loServer/action/UploadFileAction.java
+++ b/broker/src/main/java/com/xiaoleilu/loServer/action/UploadFileAction.java
@@ -257,6 +257,7 @@ public class UploadFileAction extends Action {
                 if(!bFile) {
                     bFile = dirFile.mkdirs();
                     if (!bFile) {
+                        logger.error("create dirs error! {}", dir);
                         response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
                         response.setContent("服务器错误：无法创建文件");
                         return false;