Upload files to Qiniu Cloud Storage in Python's Django

A small Django project I am writing recently needs to implement the function of users uploading pictures, and uses Qiniu Cloud Storage, which is hereby recorded. The version of Qiniu python SDK I use here is 7.0.3, and the function usage may be slightly different from the old version.

Originally, file upload requires uploading the file to your own business server first, and then uploading it from the business server to cloud storage. Now Qiniu's form upload can directly upload files to Qiniu, without the need for transfer by the business server, saving traffic costs and reducing the pressure on the business server. And through settings, you can also let the client automatically redirect to a successful upload result page after the file upload is completed. Here I am using Qiniu’s form upload.

Form upload

The HTML form code for users to upload images is as follows. The key is used to specify the file name of the image saved in Qiniu, and the token is the upload certificate, which is used to verify legality and set return information.

upload.html

<form method="POST" action="http://upload.qiniu.com/" enctype="multipart/form-data">
<input name="key" type="hidden" value="">
<input name="token" type="hidden" value="">
<input name="file" type="file">
<input type="submit">
</form>

The key code in the view function that jumps to the above HTML page is as follows. The upload_token function is used to generate the token field in the form. 7200 in the upload_token function represents the validity period of the uploaded voucher. returnUrl represents the redirection address after successful upload. returnBody represents the information returned by Qiniu during redirection. It is a base64 encoded The json data needs to be decoded to obtain the json data. When an upload error occurs, the error message appears directly in the URL in clear text and will not be included in the returned json data. You can also limit the types of uploaded files by setting mimeLimit.

views.py

##

import qiniu
import uuid
ACCESS_KEY = '七牛分配的公钥'
SECRET_KEY = '七牛分配的私钥'
BUCKET_NAME = '保存文件的仓库名'
key = str(uuid.uuid1()).replace('-', '') # 这里使用uuid作为保存在七牛里文件的名字。并去掉了uuid中的“-”
q = qiniu.Auth(ACCESS_KEY, SECRET_KEY)
token = q.upload_token(BUCKET_NAME, key, 7200, {'returnUrl':'http://127.0.0.1:8000/photos/uploadprocessor', 'returnBody': '{"name": $(fname), "key": $(key)}', 'mimeLimit':'image/jpeg;image/png'})
return render_to_response('photos/upload.html', {'token': token, 'key': key}, context_instance=RequestContext(request))

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