文件下载，后端接口，django，flask

Django后端接口

def download_excel(request):
    """
    get excel file from url param and upload it to html page for downloading
    :param request:
    :return:
    """
    # get file path from a tag url param
    excel_file = request.GET.get("EXCEL")
    file_byte = open(excel_file, "rb")
    response = HttpResponse(file_byte)
    # 设置头信息，告诉浏览器这是个文件
    response['Content-Type'] = 'application/octet-stream'
    response['Content-Disposition'] = 'attachment;filename="attendance.xlsx"'
    return response

flask后端接口

def download_get_part():
    """
    把上面下载post返回的excel文件路径，传入进来，用二进制打开，返给浏览器
    :return:
    """
    # todo: 待调试，flask的HttpResponse替代品是啥，
    excel_file = request.args.get("excel")
    # 设置头信息，告诉浏览器这是个文件
    file_byte = open(excel_file, "rb")
    response = Response(file_byte)
    response.headers["Content-Type"] = "application/octet-stream"
    response.headers["Content-Disposition"] = "attachment;filename={}".format(
        "各节点之间的调用关系.xlsx".encode().decode('latin-1')
    )
    return response
    # 这里是另一种方式提供下载文件接口，只有这一行就够了
    # return send_file(excel_file)  # website download file successful