如何使用Boto3创建预签名URL以从S3存储桶下载文件? [英] How do I create a Presigned URL to download a file from an S3 Bucket using Boto3?

问题描述

我必须将文件从我的 S3存储桶下载到服务器上，以便进行某些处理.存储桶不支持直接连接，必须使用 Pre-Signed URL .

I have to download a file from my S3 bucket onto my server for some processing. The bucket does not support direct connections and has to use a Pre-Signed URL.

Boto3 Docs 谈论使用预先签名的URL进行上传，但没有提及要下载的URL.

The Boto3 Docs talk about using a presigned URL to upload but do not mention the same for download.

推荐答案

import boto3

s3_client = boto3.client('s3')

BUCKET = 'my-bucket'
OBJECT = 'foo.jpg'

url = s3_client.generate_presigned_url(
    'get_object',
    Params={'Bucket': BUCKET, 'Key': OBJECT},
    ExpiresIn=300)

print(url)

有关另一个示例，请参见:预签名的URL— Boto 3文档

For another example, see: Presigned URLs — Boto 3 documentation

您还可以使用AWS CLI生成预签名URL:

You can also generate a pre-signed URL using the AWS CLI:

aws s3 presign s3://my-bucket/foo.jpg --expires-in 300

请参阅:前缀-AWS CLI命令参考

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