如何在Django上将Pillow处理的图像上传到S3?

时间:2017-03-03 16:51:00

标签: django amazon-s3 pillow

我正在尝试下面编写的代码,但它正在抛出一个错误。我不确定我做错了什么。任何帮助表示赞赏

def upload_img(request):
    maxsize = (1024, 1024)
    im = Image.open(request.FILES['image'])
    im.thumbnail(maxsize)
    img_name = 'test.jpg'
    s3 = boto3.client('s3')
    s3.put_object(
        Bucket=settings.AWS_S3_DEV_IMG_BUCKET,
        Key=img_name,
        Body=im.save(img_name, "JPEG"),
        ContentType='image/jpeg',
    )

错误:

'ParamValidationError: Parameter validation failed:
Invalid type for parameter Body, value: None, type: <type 'NoneType'>, valid types: <type 'str'>, <type 'bytearray'>, file-like object

1 个答案:

答案 0 :(得分:2)

Image.save()方法不会返回图像,saves it to disk (or buffer) and returns None。这就是为什么boto抱怨NoneType参数。

您希望将数据保存到某个临时缓冲区,然后将其传递给boto。例如:

buffer = io.BytesIO()
im.save(buffer, "JPEG")
buffer.seek(0) # rewind pointer back to start
s3.put_object(
    Bucket=settings.AWS_S3_DEV_IMG_BUCKET,
    Key=img_name,
    Body=buffer,
    ContentType='image/jpeg',
)