def serveFile(path,m_id):
    with open(path, "rb") as excel:
        data = excel.read()
    response = HttpResponse(data,content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
    response['Content-Disposition'] = 'attachment; filename=%s_Report.xlsx' % m_id
    return response

def excelReport(request,m_id):
    folder = './excel_reports/'
    fileName = '%s_Report.xlsx' % m_id
    path = folder + fileName
    if os.path.exists(path):
        return serveFile(path,m_id)
    else:
        args = ['ServerExcel.jar', m_id] # Any number of args to be passed to the jar file
        result = jarWrapper(*args)
        if result:
            shutil.move("./" + fileName,folder)
            return serveFile(path,m_id)
        else:
            return HttpResponse(json.dumps({"no":"excel","no one": "cry"}))