如果想要使放進S3裡某個目錄下的内容自動變成public,可以添加如下Bucket Policy
{ “Version”: “2008-10-17”, “Statement”: [ { “Sid”: “AddPerm”, “Effect”: “Allow”, “Principal”: { “AWS”: “*” }, “Action”: “s3:GetObject”, “Resource”: “arn:aws:s3:::<your-bucket-name>/<public-dir>/*” } ] }