阿里云oss对象上传文件

# -*- coding: utf-8 -*-
import base64
import datetime
import hmac
import json
import time
from hashlib import sha1 as sha


def get_iso_8601(expire, utc=8):
    gmt = datetime.datetime.utcfromtimestamp(expire + utc * 60 * 60).isoformat()
    gmt += "Z"
    return gmt


access_key_id = "your access_key_id "

access_key_secret = "your access_key_secret "

# 填写Bucket名称。
bucket_name = '填写Bucket名称'

def get_token():
    save_name = '文件名称'
    upload_dir = "upload"
    expire_time = int(time.time()) + 600
    policy_dict = {
        "conditions": [
            # ["eq", "$bucket", "md-hz"],
            # ["starts-with", "$key", upload_dir]
            # 10G = 10 * 1024 * 1024 * 1024 = 10737418240
            # ["content-length-range", 5, 10737418240]
            ["content-length-range", 1, 10737418240]
        ],
        "expiration": get_iso_8601(expire_time)
    }

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

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

    token_dict: dict = {
        "OSSAccessKeyId": access_key_id,
        "policy": policy_encode.decode('utf-8'),
        "signature": sign_result.decode('utf-8'),
        "expire": str(expire_time),
        "key": f'{upload_dir}/{save_name}'
    }
    return token_dict