Upload a file to Object Storage Service (OSS) with a signed header using Python

Overview

The OSS SDK includes integrated functions to sign, upload, and download files. However, you may sometimes need to use the API to upload and download files with signatures. This topic provides a Python example of the PutObject operation.

Details

The following example shows how to use the PutObject operation in Python 2.7.

# -*- coding: utf-8 -*-
import base64
import hmac
import sha
import urllib2
from datetime import datetime


accesskey = 'Your AccessKey ID';
accesskeysecret = 'Your AccessKey Secret'
endpoint='oss-cn-hangzhou.aliyuncs.com'
bucket='Your bucket name'
# The path of the file to upload.
object='mytest/test.png'
GMT_FORMAT = '%a, %d %b %Y %H:%M:%S GMT'


time = datetime.utcnow().strftime(GMT_FORMAT)
print(time)
signature = hmac.new(accesskeysecret,
"PUT\n\nimage/png\n"+time+"\n"+"/"+bucket+"/"+object,sha)
Signature = base64.b64encode(signature.digest())
print("Signature: %s" % Signature)
opener = urllib2.build_opener(urllib2.HTTPHandler)
with open("/path/to/your/local/file.png") as f:
data=f.read()
request = urllib2.Request("http://"+bucket+"."+endpoint+"/"+object, data=data)
request.add_header("Authorization", "OSS "+accesskey+":"+Signature)
request.add_header("Content-Type", "image/png")
request.add_header("Date", time)
request.get_method = lambda:"PUT"
url = opener.open(request)

References

Include a signature in the header

Applies to

• Object Storage Service (OSS)