Object Storage Service:DeleteObject

Usage notes

• To delete an object, you must have the oss:DeleteObject permission. To delete a specific version of an object, you must have the oss:DeleteObjectVersion permission. For more information, see Attach a custom policy to a RAM user.

• Deleted objects cannot be recovered. Proceed with caution. For more information about how to delete objects, see Delete objects.

• HTTP 204 status code is returned when the DeleteObject operation succeeds, regardless of whether the object exists.

• If the object you want to delete is a symbolic link, the DeleteObject operation deletes only the symbolic link but not the object to which the link points.

• The DeleteObject operation cannot be used to delete directories in a bucket for which the hierarchical namespace feature is enabled.

Versioning

When you call DeleteObject to delete an object from a versioned bucket, you must determine whether to specify a version ID in the request.

• Delete an object without specifying a version ID (temporary deletion)

  If you do not specify the version ID of the object that you want to delete in the request, OSS does not delete the current version of the object but adds a delete marker to the object as the new version. In addition, the response to the request includes the x-oss-delete-marker = true header and the x-oss-version-id header that indicates the version ID of the created delete marker.

  If the value of x-oss-delete-marker is true, the value of x-oss-version-id is the version ID of the delete marker.

  Note

  If you delete an object without specifying its version ID in a versioning-suspended bucket and the object already has a null version, OSS adds a delete maker with a version ID of null to overwrite the existing null version. An object can have up to one version whose version ID is null.

• Delete an object by specifying a version ID (permanent deletion)

  If you specify versionId in params of the request, OSS deletes the specified version. If you want to delete a null version, include params['versionId'] = "null" in params. OSS identifies the string "null" as the ID of the version to delete and deletes the null version.

Request syntax

DELETE /ObjectName HTTP/1.1
Host: BucketName.oss-cn-hangzhou.aliyuncs.com
Date: GMT Date
Authorization: SignatureValue

Request headers

This request contains only common request headers. For more information, see Common HTTP headers.

Response headers

The response to this request contains common response headers. For more information about common response headers, see Common response headers.

Examples

• Delete an object from an unversioned bucket.

  Sample request

  DELETE /AK.txt HTTP/1.1
  Host: test.oss-cn-zhangjiakou.aliyuncs.com
  Accept-Encoding: identity
  User-Agent: aliyun-sdk-python/2.6.0(Windows/7/AMD64;3.7.0)
  Accept: text/html
  Connection: keep-alive
  Date: Wed, 02 Jan 2019 13:28:38 GMT
  authorization: OSS qn6qrrqxo2oawuk53otfjbyc:zUglwRPGkbByZxm1+y4eyu+NIUs=zV0****
  Content-Length: 0

  Sample response

  HTTP/1.1 204 No Content
  Server: AliyunOSS
  Date: Wed, 02 Jan 2019 13:28:38 GMT
  Content-Length: 0
  Connection: keep-alive
  x-oss-request-id: 5C2CBC8653718B5511EF4535
  x-oss-server-time: 134

• Delete an object from a versioned bucket without specifying a version ID.

  In this case, OSS adds a delete marker to the object and includes the x-oss-delete-marker=true header in the response.

  Sample request

  DELETE /example HTTP/1.1
  Host: versioning-delete.oss-cn-hangzhou.aliyuncs.com
  Date: Tue, 09 Apr 2019 04:08:23 GMT
  Authorization: OSS qn6q**************:77Dv****************

  Sample response

  HTTP/1.1 204 NoContent
  x-oss-delete-marker: true
  x-oss-version-id: CAEQMxiBgIDh3ZCB0BYiIGE4YjIyMjExZDhhYjQxNzZiNGUyZTI4ZjljZDcz****
  x-oss-request-id: 5CAC1AB7B7AEADE01700****
  Date: Tue, 09 Apr 2019 04:08:23 GMT
  Connection: keep-alive
  Server: AliyunOSS

• Delete a version of the object from a versioned bucket by specifying the version ID.

  In this case, the specified version of the object is permanently deleted.

  Sample request

  DELETE /example?versionId=CAEQOBiBgIDNlJeB0BYiIDAwYjJlNDQ4YjJkMzQxMmY5NTM5N2UzZWNiZTQ2**** HTTP/1.1
  Host: versioning-delete.oss-cn-hangzhou.aliyuncs.com
  Date: Tue, 09 Apr 2019 04:11:54 GMT
  Authorization: OSS qn6q**************:77Dv****************

  Sample response

  HTTP/1.1 204 No Content
  x-oss-version-id: CAEQOBiBgIDNlJeB0BYiIDAwYjJlNDQ4YjJkMzQxMmY5NTM5N2UzZWNiZTQ2****
  x-oss-request-id: 5CAC1B8AB7AEADE01700****
  Date: Tue, 09 Apr 2019 04:11:54 GMT
  Content-Length: 0
  Connection: keep-alive
  Server: AliyunOSS

• Delete a delete marker from a versioned bucket by specifying the version ID of the delete marker.

  In the following example, the specified version is a delete marker. The x-oss-delete-marker=true header is included in the response.

  Sample request

  DELETE /example?versionId=CAEQOBiBgIDNlJeB0BYiIDAwYjJlNDQ4YjJkMzQxMmY5NTM5N2UzZWNiZTQ2**** HTTP/1.1
  Host: versioning-delete.oss-cn-hangzhou.aliyuncs.com
  Date: Tue, 09 Apr 2019 04:16:25 GMT
  Authorization: OSS qn6q**************:77Dv****************

  Sample response

  HTTP/1.1 204 No Content
  x-oss-delete-marker: true
  x-oss-version-id: CAEQNhiBgIDFtp.B0BYiIDk4NzgwMmU4NDMyOTQyM2NiMDQxOTcxYWNhMjc1****
  x-oss-request-id: 5CAC1C99B7AEADE01700****
  Date: Tue, 09 Apr 2019 04:16:25 GMT
  Content-Length: 0
  Connection: keep-alive
  Server: AliyunOSS

SDK

You can use OSS SDKs for the following programming languages to call DeleteObject:

• Java

• Python

• PHP

• Go

• C

• .NET

• Android

• iOS

• Node.js

• Browser.js

References

• For information about the API operation that you can call to delete multiple objects at a time, see DeleteMultipleObjects.

• For formation about how to automatically delete objects, see Overview.

Error codes