我正在制作一个简单的Flask API来上传图像并执行一些操作,然后将其作为二进制存储在数据库中,然后我想使用 send_file()函数下载它,但是,当我传递像字节这样的图像时,它会给我一个错误:
return send_file(BytesIO.read(image.data), attachment_filename='f.jpg', as_attachment=True) TypeError: descriptor
“read”需要“_io.BytesIO”对象,但收到“bytes”
我的上传图像的代码如下:
@app.route('/upload', methods=['POST'])
def upload():
images = request.files.getlist('uploadImages')
n = 0
for image in images:
fileName = image.filename.split('.')[0]
fileFormat = image.filename.split('.')[1]
imageRead = image.read()
img = BytesIO(imageRead)
with graph.as_default():
caption = generate_caption_from_file(img)
newImage = imageDescription(name=fileName, format=fileFormat, description=caption,
data=imageRead)
db.session.add(newImage)
db.session.commit()
n = n + 1
return str(n) + ' Image has been saved successfully'
我的下载图像的代码:
@app.route('/download/<int:id>')
def download(id):
image = imageDescription.query.get_or_404(id)
return send_file(BytesIO.read(image.data), attachment_filename='f.jpg', as_attachment=True)
任何人都可以帮忙吗???
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