diff --git a/ccdi-project/src/main/java/com/ruoyi/ccdi/project/controller/CcdiFileUploadController.java b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/controller/CcdiFileUploadController.java
index 3870664..53b80c1 100644
--- a/ccdi-project/src/main/java/com/ruoyi/ccdi/project/controller/CcdiFileUploadController.java
+++ b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/controller/CcdiFileUploadController.java
@@ -62,10 +62,13 @@ public class CcdiFileUploadController extends BaseController {
                 return AjaxResult.error("文件 " + file.getOriginalFilename() + " 超过50MB限制");
             }
             String fileName = file.getOriginalFilename();
+            if (fileName == null || fileName.trim().isEmpty()) {
+                return AjaxResult.error("文件名不能为空");
+            }
             String lowerFileName = fileName.toLowerCase();
             if (!lowerFileName.endsWith(".xlsx") && !lowerFileName.endsWith(".xls")
                     && !lowerFileName.endsWith(".csv") && !lowerFileName.endsWith(".pdf")) {
-                return AjaxResult.error("文件 " + fileName + " 格式不支持，仅支持 PDF、CSV、Excel 文件");
+                return AjaxResult.error("文件 " + fileName + " 格式不支持, 仅支持 PDF, CSV, Excel 文件");
             }
         }