Zip file getting downloaded without .zip extension in Chrome through Java

1. I am trying to download a zip file from a fixed location present in server.


2. In my Rest method , I am just passing the file name from client (browser) .
   (Please see below code ).


3. In my Rest method I am sending the zip file to the client.


4. The file gets downloaded on the browser without any issue.

My Issue is that the zip file gets downloaded on browser without .zip extension.

@RequestMapping(value = "/zip/{filePath}", method = RequestMethod.GET)

public @ResponseBody void downloadZip(@PathVariable("filePath") String filePath, HttpServletRequest request, HttpServletResponse response) throws IOException {



  ServletContext context = request.getServletContext();

  File downloadFile = new File(filePath);

  FileInputStream inputStream = new FileInputStream(downloadFile);

  // get output stream of the response

  OutputStream outStream = response.getOutputStream();



  byte[] buffer = new byte[(int) downloadFile.length()];

  int bytesRead = -1;



  // write bytes read from the input stream into the output stream

  while ((bytesRead = inputStream.read(buffer)) != -1) {

    outStream.write(buffer, 0, bytesRead);

  }

  // get MIME type of the file

  String mimeType = context.getMimeType(fullPath);

  if (mimeType == null) {

    // set to binary type if MIME mapping not found

    mimeType = "application/octet-stream";

  }

  System.out.println("MIME type: " + mimeType);



  // set content attributes for the response

  response.setContentType(mimeType);

  response.setContentLength((int) downloadFile.length());



  response.setHeader("Content-Disposition",

      String.format("attachment; filename=\"%s\"", downloadFile.getName()));

  logger.error("Filename = " + downloadFile.getName());

  inputStream.close();

  outStream.close();

}

PS: The file gets downloaded on some machine with ZIP and in some machine without ZIP. I have tested only on chrome (as per client requirement).
I think, there is an issue with the Chrome settings which I need to look upon (just a guess).

Can someone help upon this?

Thanks in advance....