Flask将图像上传到S3而不将其保存到本地文件系统 [英] Flask Upload Image to S3 without saving it to local file system
问题描述
我需要将用户提交的照片上传到s3存储桶.但是我一直收到以下错误:
I need to upload a a user submitted photo to an s3 bucket. However I keep getting the following error:
TypeError: expected str, bytes or os.PathLike object, not FileStorage
如何将文件存储为字符串/字节而不是文件存储?相关代码如下:
How am I able to store the file as string/bytes instead of FileStorage? The relevent code is as follows:
@user_api.route('upload-profile-photo', methods=['PUT'])
@Auth.auth_required
def upload_profile_photo():
"""
Upload User Profile Photo
"""
key = Auth.auth_user()
bucket = 'profile-photos'
content_type = request.mimetype
image_file = request.files['file']
client = boto3.client('s3',
region_name='sfo2',
endpoint_url='https://example.xxx.amazonaws.com',
aws_access_key_id=os.environ['ACCESS_KEY'],
aws_secret_access_key=os.environ['SECRET_KEY'])
with open(image_file, "rb") as f:
client.upload_fileobj(
bucket,
f,
key,
ExtraArgs={'ACL': 'public-read', 'ContentType': content_type}
)
return custom_response({'message': 'image uploaded'}, 200)
推荐答案
i要使用 FileStorage
实现此目的,我使用 put_object()
方法:
iTo achieve that with a FileStorage
, I use the method put_object()
:
from werkzeug import secure_filename
@user_api.route('upload-profile-photo', methods=['PUT'])
@Auth.auth_required
def upload_profile_photo():
"""
Upload User Profile Photo
"""
key = Auth.auth_user()
bucket = 'profile-photos'
content_type = request.mimetype
image_file = request.files['file']
client = boto3.client('s3',
region_name='sfo2',
endpoint_url='https://example.xxx.amazonaws.com',
aws_access_key_id=os.environ['ACCESS_KEY'],
aws_secret_access_key=os.environ['SECRET_KEY'])
filename = secure_filename(image_file.filename) # This is convenient to validate your filename, otherwise just use file.filename
client.put_object(Body=image_file,
Bucket=bucket,
Key=filename,
ContentType=content_type)
return custom_response({'message': 'image uploaded'}, 200)
注意对 secure_filename()的调用
是可选的(您可以简单地传递 image_file.filename
),但是可以很方便地验证文件名.否则,最好添加一些异常处理,但这里的基本思路是:无需 open()
文件(该文件需要存储在本地).
Note the call to secure_filename()
is optional (you can simply pass image_file.filename
), but can be very handy to validate the filename.
Otherwise it would be nice to add some exception handlings, but the rough idea is here: no need to open()
the file (that would need to be stored locally).
I encourage to have a look at the documentation here, to understand the difference with upload_fileobj()
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