AWS S3

Get object attributes

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Retrieve all metadata from an object, without returning the object itself.

Inputs

フィールド

種類

説明

region [required]

enum

default: us-east-1

bucket [required]

string

The name of the bucket that contains the object. When using this action with an access point, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using access points in the Amazon S3 User Guide. When using this action with Amazon S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com. When using this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts bucket ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see Using Amazon S3 on Outposts in the Amazon S3 User Guide.

key [required]

string

The object key.

versionId

string

expectedBucketOwner

string

The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with an HTTP 403 (Access Denied) error.

Outputs

Expand All

フィールド

種類

説明

deleteMarker

boolean

Specifies whether the object retrieved was (true) or was not (false) a delete marker. If false, this response header does not appear in the response. This functionality is not supported for directory buckets.

lastModified

date-time

The creation date of the object.

eTag

string

An ETag is an opaque identifier assigned by a web server to a specific version of a resource found at a URL.

versionId

string

The version ID of the object. This functionality is not supported for directory buckets.

checksum

object

The checksum or digest of the object.

ChecksumCRC32

string

The base64-encoded, 32-bit CRC32 checksum of the object. This will only be present if it was uploaded with the object. With multipart uploads, this may not be a checksum value of the object. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

ChecksumCRC32C

string

The base64-encoded, 32-bit CRC32C checksum of the object. This will only be present if it was uploaded with the object. With multipart uploads, this may not be a checksum value of the object. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

ChecksumSHA1

string

The base64-encoded, 160-bit SHA-1 digest of the object. This will only be present if it was uploaded with the object. With multipart uploads, this may not be a checksum value of the object. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

ChecksumSHA256

string

The base64-encoded, 256-bit SHA-256 digest of the object. This will only be present if it was uploaded with the object. With multipart uploads, this may not be a checksum value of the object. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

storageClass

string

Provides the storage class information of the object. Amazon S3 returns this header for all objects except for S3 Standard storage class objects. For more information, see Storage Classes.

objectSize

number

The size of the object in bytes.

amzRequestId [required]

string