AWS S3 Pre-Sign URL 全部 S3 目錄所有檔案都要，我該如何做?

以下為簡單範例，可自行發揮～

建立 Lambda

增加 S3 權限

為了方便用 s3 full access policy(依照實際情況調整)

修改Timeout 時間，依照實際情況調整

範例

import json
import boto3
from botocore.exceptions import NoCredentialsError

def lambda_handler(event, context):
    # 初始化 S3 客户端
    s3_client = boto3.client('s3')

    # 從事件中取得桶名稱和前綴
    bucket_name = event.get('bucket_name', 'your-bucket-name')
    prefix = event.get('prefix', 'your-directory-prefix/')
    expiration = event.get('expiration', 3600)

    def generate_presigned_urls(bucket_name, prefix, expiration):
        try:
            # 列出指定前綴下的所有對象
            response = s3_client.list_objects_v2(Bucket=bucket_name, Prefix=prefix)
            
            if 'Contents' not in response:
                print("No files found in the specified bucket and prefix.")
                return []

            urls = []
            for obj in response['Contents']:
                key = obj['Key']
                # 產生預簽名 URL
                url = s3_client.generate_presigned_url('get_object',
                                                       Params={'Bucket': bucket_name, 'Key': key},
                                                       ExpiresIn=expiration)
                urls.append({'file': key, 'url': url})
                print(f'Generated URL for {key}: {url}')

            return urls

        except NoCredentialsError:
            print("Credentials not available.")
            return []

    # 呼叫函數產生預簽名 URL
    urls = generate_presigned_urls(bucket_name, prefix, expiration)

    # 傳回產生的 URL 列表
    return {
        'statusCode': 200,
        'body': json.dumps(urls, indent=4)  # 格式化输出
    }

執行

{
  "bucket_name": "you bucke",
  "prefix": "you prefix/",
  "expiration": 3600
}

產生結果