public static bool StoreFile(OssHelper oss, string bucketName, string oldFileUrl, string fileUrl, out string newFileUrl) { newFileUrl = ""; // tmp -> origin string fileName = fileUrl.toFileName(); if (fileName.Trim().Length != 0) { string fileNameTemp = fileName.toTemp(); string fileNameNormal = fileName.toNormal(); newFileUrl = fileUrl.Replace(fileName, fileNameNormal); if (oss.ExistKey(bucketName, fileNameNormal)) { return(true); } if (!oss.ExistKey(bucketName, fileNameTemp)) { return(false); } try { oss.CopyObject(bucketName, fileNameTemp, fileNameNormal); } catch { return(false); } } // delete tmp fileName = oldFileUrl.toFileName(); if (fileName != "") { try { oss.DeleteObject(bucketName, fileName); } catch { } } return(true); }