post Object 上传oss

def get_upload_token(save_name=''):

    expire_time = int(time.time()) + OSSConfig.upload_expire_time
    policy_dict = {
        "conditions": [
            # ["eq", "$key", save_name],
            # ["starts-with", "$key", save_name],
            # 10G = 10 * 1024 * 1024 * 1024 = 10737418240
            ["content-length-range", 1, 10737418240]
        ],
        "expiration": get_iso_8601(expire_time)
    }

    upload_dir = ''
    if save_name != '':
        policy_dict['conditions'].append(["eq", "$key", save_name])

    policy = json.dumps(policy_dict).strip()
    policy_encode = base64.b64encode(policy.encode("utf-8"))

    h = hmac.new(OSSConfig.access_key_secret.encode("utf-8"), policy_encode, sha)
    sign_result = base64.encodebytes(h.digest()).strip()

    token_dict: dict = {
        "accessid": OSSConfig.access_key_id,
        "host": commonConf.media_url,
        "policy": policy_encode.decode('utf-8'),
        "signature": sign_result.decode('utf-8'),
        "expire": expire_time,
        "dir": upload_dir,
        "name": save_name
    }
    return token_dict

hmacsha256加密16进制

def get_sign(key, data):
data = data.encode('utf-8')
return hmac.new(key.encode('utf-8'), data, digestmod=sha256).hexdigest().upper()