The file name and extension of downloaded file are not same as the original file in file manager

Question

Hey there.

We have used customDownload() function to send keycloak username and token to download api in file manager. The file name and extension of the file are not same as that of the original file after downloading it in file manager. Please find the attached code of both frontend and backend.

Sivakumar ShunmugaSundaram · Answer

Hi Jyoti,From the shared details, we understand that you are facing
issues with the downloaded file format in the React FileManager component while
using a custom download operation. We have prepared a simple sample of the
React FileManager component with the Amazon S3 file service provider to
implement a custom download operation, and the sample works fine with the
downloaded file. We would like to let you know that the reported issue occurs
only when we miss content-disposition code details on the controller side.
To overcome the issue, we suggest you include the below code changes in your
controller Download method. Also, from the shared screenshot details, we
suspect that you are using a custom service provider on your side. We suspect that the issue occurs due to controller-level
customization made from your side. We have attached the React local sample and
the Amazon S3 file service provider for your reference. Refer to the below code
snippet.

[FileManagerController.cs]
   
  [Route("Download")]
         
  public IActionResult
  Download(string downloadInput)
         
  {
             
  var headerValue =
  Request.Headers["Custom-Header"].ToString();
             
  Response.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition");
             
  FileManagerDirectoryContent args =
  JsonConvert.DeserializeObject<FileManagerDirectoryContent>(downloadInput);
             
  return
  operation.Download(args.Path, args.Names, args.Data);
         
  }

Sample: https://stackblitz.com/edit/react-vuwczm?file=index.js
Service provider:  https://www.syncfusion.com/downloads/support/directtrac/general/ze/amazon-s3-aspcore-file-provider-883348794.zipPlease check the attached sample and confirm whether the
issue is resolved. If the issue still persists from your side, share the
service provider details from your side. It will help us to provide a prompt
solution.Regards,Sivakumar S

Jyoti Bajpai · Answer

Thanks for your help. But your solution of controller side was in dot net and we are working in java. So can you please provide us a solution of controller side in java. Here is the code attached of controller side in java.

Sivakumar ShunmugaSundaram · Answer

Hi Jyoti,Thanks for the shared details. Thanks for the shared details. As per the shared details, we
understand that you are facing issues with the downloaded file format in the
React FileManager component while using a custom download operation with a Java
provider. We would like to let you know that in our syncfusion FileManager
component, we have written service operations in C#. So, we are unable to
replicate the reported issue from our side.We have also attached the general blob related to the
reported issue for your reference.Link: https://stackoverflow.com/questions/16601428/how-to-set-content-disposition-and-filename-when-using-filesystemresource-toPlease check the shared details and try it on your end. If
the issue still persists, share with us your own customized Java service provider.
It will help us to provide a prompt solution.Regards,Sivakumar S