阿里云 oss python3 样例

阿里云的oss SDK又是不支持python3，头疼头疼。

本想改一改它的SDK，让它支持python2+python3，无奈里面大量的代码使用不带括号的print。工作量恐怖。

幸好oss的使用很easy。我翻了翻相关文档。弄了个简单可执行的样例(python2, python3都支持)，基本的代码例如以下：aliyun-oss-python3

请注意，须要填写自己的accessKeyId等相关信息

import base64

import hmac

from hashlib import sha1

import time

try:

    import urllib.request as urllib

except ImportError:

    import urllib2 as urllib





accessKeyId = 'ic20Gwxms6ynLlkx'

accessKeySecret = 'lhTBND3SHvSawihEcIL6LFz597xtMj'

bucket = 'fast-loan'

region_host =  'oss-cn-hangzhou.aliyuncs.com'





# use signature in url

def _oss_file_url(method, bucket, filename, content_type):

    now = int(time.time())

    expire = now - (now % 1800) + 3600 # expire will not different every second

    tosign = "%s\n\n\n%d\n/%s/%s" % (method, expire, bucket, filename)

    if method == 'PUT' or method == 'POST':

        tosign = "%s\n\n%s\n%d\n/%s/%s" % (method, content_type, expire, bucket, filename)

    h = hmac.new(accessKeySecret.encode(), tosign.encode(), sha1)

    sign = urllib.quote(base64.encodestring(h.digest()).strip())

    return 'http://%s.%s/%s?OSSAccessKeyId=%s&Expires=%d&Signature=%s' % (

        bucket, region_host, filename, accessKeyId, expire, sign

    )





def get_file_url(bucket, filename):

    return _oss_file_url('GET', bucket, filename, None)





def http_put(bucket, filename, cont, content_type):

    url = _oss_file_url('PUT', bucket, filename, content_type)

    req = urllib.Request(url, cont)

    req.get_method = lambda: 'PUT'

    req.add_header('content-type', content_type)

    try:

        return urllib.urlopen(req)

    except urllib.HTTPError as e:

        print(e)





http_put(bucket, 'mytestkey', b'sample value', 'text/plain')

url = get_file_url(bucket, 'mytestkey')

print(urllib.urlopen(url).read())