Uploading file using AJAX GET from Spring service

I am trying to implement a service that automatically starts a download with the requested file.

This is my AJAX call:

function downloadFile(fileName) {
  $.ajax({
    url : SERVICE_URI + "files/" + fileName,
    contentType : 'application/json',
    type : 'GET',
    success : function (data)
    {
      alert("done!");
    },
    error: function (error) {
      console.log(error);
    }
  });
}

      

        
        
        
      

    

and this is my Spring service GET method:

@RequestMapping(value = "/files/{file_name}", method = RequestMethod.GET)
public void getFile(@PathVariable("file_name") String fileName,
                    HttpServletResponse response) {
    try {
        // get your file as InputStream
        FileInputStream fis = new FileInputStream( fileName + ".csv" );
        InputStream is = fis;
        // copy it to response OutputStream
        ByteStreams.copy(is, response.getOutputStream());
        response.setContentType("text/csv");
        response.flushBuffer();
    } catch (IOException ex) {
        throw new RuntimeException("IOError writing file to output stream");
    }

}

      

        
        
        
      

    

When my client requests an existing file from the server, AJAX is done success()

, but the file doesn't even load. Am I doing something wrong?