fix 修复 本地文件上传 无法获取文件长度问题

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java

@@ -219,9 +219,10 @@ public class SysOssServiceImpl implements ISysOssService, OssService {
         String originalfileName = file.getName();
         String suffix = StringUtils.substring(originalfileName, originalfileName.lastIndexOf("."), originalfileName.length());
         OssClient storage = OssFactory.instance();
+        long length = file.length();
         UploadResult uploadResult = storage.uploadSuffix(file, suffix);
         SysOssExt ext1 = new SysOssExt();
-        ext1.setFileSize(file.length());
+        ext1.setFileSize(length);
         // 保存文件信息
         return buildResultEntity(originalfileName, suffix, storage.getConfigKey(), uploadResult, ext1);
     }