在 aws s3 中生成图像缩略图时出错

Question

当我将图像上传到直接 Backet 时，它工作正常，但如果文件夹出错

Line=> s3_client.download_file(bucket, key, download_path)

下载路径。

for record in event['Records']:
    
            bucket = record['s3']['bucket']['name']
            key = record['s3']['object']['key']
    
            download_path = '/tmp/{}{}'.format(uuid.uuid4(), key)
    
            upload_path = '/tmp/resized-{}'.format(key)
    
            print('Bucket Path', bucket)
            print('Key path', key)
            print('Download path', download_path)
            print('Upload path', upload_path)
    
            s3_client.download_file(bucket, key, download_path)
            resize_image(download_path, upload_path)
            s3_client.upload_file(upload_path, '{}-resized'.format(bucket), key)

Answer 1

您似乎正在使用来自示例 Amazon S3 function 代码 - AWS Lambda 的代码。

该代码有一个额外的行删除斜杠：

    for record in event['Records']:
        bucket = record['s3']['bucket']['name']
        key = unquote_plus(record['s3']['object']['key'])
        tmpkey = key.replace('/', '')                         # <--- This line here!
        download_path = '/tmp/{}{}'.format(uuid.uuid4(), tmpkey)  # <--- Used here
        upload_path = '/tmp/resized-{}'.format(tmpkey)
        s3_client.download_file(bucket, key, download_path)
        resize_image(download_path, upload_path)
        s3_client.upload_file(upload_path, '{}-resized'.format(bucket), key)

这允许 Python 存储文件，而无需创建分层目录。