Fix uploadInitEvent object_name

src/main/java/com/backendsys/modules/upload/service/impl/SysFileMultipartServiceImpl.java

@@ -106,7 +106,7 @@ public class SysFileMultipartServiceImpl implements SysFileMultipartService {
 
         String upload_id = null;
         String object_key = null;
-        String object_name = Convert.toStr(UUID.randomUUID()) + FileUtil.extName(multipartUploadParams.getFilename());
+        String object_name = Convert.toStr(UUID.randomUUID()) + "." + FileUtil.extName(multipartUploadParams.getFilename());
 
         // target: 上传目标 (-1:本地, 1:腾讯云, 2:阿里云, 3.抖音云)
         if (target == 1) {