二维码

def qr_code_img(request):
    face_id = request.session.get("userfaceid")
    print(face_id)
    user_to = request.POST.get('to')
    abs_url = request.build_absolute_uri()
    url_root = abs_url.split('/con')[0]
    qrcode_url = os.path.join(url_root, f'media/html/source/{user_to}.html')
    print(qrcode_url)
    img = qrcode.make(qrcode_url)
    buf = BytesIO()  # 创建一个BytesIO临时保存生成图片数据
    img.save(buf)  # 将图片字节数据放到BytesIO临时保存
    image_stream = buf.getvalue()  # 在BytesIO临时保存拿出数据
    response = HttpResponse(image_stream, content_type="image/jpg")  # 将二维码数据返回到页面
    return response