项目背景

由于需要将算法处理过的视频放进存储服务器上，所以涉及到了跨服务器上传视频、图片等

代码实现

@api_view(['POST'])
def upload(request):
    #定义一个固定的返回值
    response = {'state': 1, 'des': 'normal'}
    # 获取参数
    if request.method == 'POST':
        obj = request.FILES.get('obj')
        des = request.POST.get("des", '')
        number = request.POST.get("number", '')
        person = request.POST.get("person", '')
        time = request.POST.get("time", '')
        # 将文件存入本地
        f = open(obj.name, 'wb')
        for line in obj.chunks():
            f.write(line)
        f.close()
        # 获取文件名以及后缀
        obj_split = obj.name.split(".")
        # if obj_split[-1] in ["jpg","png","jpeg"]:
        # if obj_split[-1] in ["mp4","avi","mkv"]:
        # 从数据库获取存储服务器ip、port、username、password、path等信息
        node_query = NodeManagement.objects.filter(node_type="risk").values()
        host = node_query[0]["ip"]
        port = int(node_query[0]["port"])
        username = node_query[0]["username"]
        password = node_query[0]["password"]
        target_path = node_query[0]["relative_path"]
        transport = paramiko.Transport(host, port)
        # 本地文件路径
        local_file = obj.name
        random_str = ''.join(random.sample(string.ascii_letters + string.digits, 32))
        # 上传服务器文件路径
        print(obj_split[-1])
        if obj_split[-1] in ["jpg","png","webp"]:
            # f = open(obj.name, 'rb')
            # files = {"files": f}
            # dev_risk_image(files)
            # f.close()
            target_file = target_path + random_str +'.'+ obj_split[-1]
        if obj_split[-1] in ["mp4","avi","mkv"]:
            target_file = target_path + random_str +'.'+ obj_split[-1]
        # 建立连接
        transport.connect(username=username, password=password)
        sftp = paramiko.SFTPClient.from_transport(transport)
        # 上传文件
        sftp.put(local_file, target_file)
        os.remove(obj.name)
        # 关闭连接
        transport.close()
        Risk.objects.create(time=datetime.strptime(time, '%Y-%m-%d %H:%M:%S'), path=host + target_file,
                            des=des, person=person, number=number)
    return HttpResponse("success")