I want to download a excel file from my angularJs code. Where i made a http post request to Java Rest API and returned the file with header "Content-Disposition" : "attachment; filename=\"new_excel_file.xlsx\""

Java Code

@Post 
@Path("/excel/trekResult")
@Produces("application/vnd.ms-excel")
public Response getResultsReport(@HeaderParam(Constants.ID) Long userId, @QueryParam(Constants.COMPANY_TREK_ID) Integer companyTrekId) {
String CONTENT_DESPOSITION = "Content-Disposition";
String CONTENT_ATTACHEMENT = "attachment; filename=\"new_excel_file.xlsx\"";

//Generates a excel file in local file system
File excelFile = misHelper.writeToFile(workBook, mis, userId, "trek-results");

return Response.ok().entity((Object)excelFile).
    header(CONTENT_DESPOSITION, CONTENT_ATTACHEMENT).build();

}

On Javascript Side

myService.exportResult($scope.companyTrek.id).then(function(result) {
  if(result !== undefined || result !== '') {
    var blob = new Blob([result], {
      type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
    });
    var objectUrl = URL.createObjectURL(blob);
    saveAs(blob, 'Trek-Results-'+fetchCurrentDate()+ '.xlsx');
  }
}

Used FileSaver.js to save file.

The output file is [Object, Object]

Tested The locally generated file.

Here is a similar question for reference that didn't help me.

receive an excel file as response in javascript from a Rest service