DeleteMultipleObjects - Object Storage Service - Alibaba Cloud Documentation Center

Deletes multiple objects from a bucket.

Note You can delete up to 1,000 objects at a time by calling the DeleteMultipleObjects operation.

Versioning

You can call the DeleteMultipleObjects operation to delete multiple objects from a versioned bucket. If you do not specify the version IDs of the objects that you want to delete in your request, delete markers are added to the objects. If you specify the version IDs of the objects that you want to delete in your request, objects with the specified version IDs are permanently deleted.

Request syntax

POST /?delete HTTP/1.1
Host: BucketName.oss-cn-hangzhou.aliyuncs.com
Date: GMT Date
Content-Length: ContentLength
Content-MD5: MD5Value
Authorization: SignatureValue
<?xml version="1.0" encoding="UTF-8"?>
<Delete>
  <Quiet>true</Quiet>
  <Object>
    <Key>key</Key>
  </Object>
...
</Delete>

Request headers

The following table describes the headers contained in DeleteMultipleObjects requests. Object Storage Service (OSS) verifies the message bodies of DeleteMultipleObjects requests based on these headers and delete the objects only when the verification is successful.


Header	Type	Required	Example	Description
Encoding-type	String	No	url	The encoding type of the object names in the response. The value of the Key parameter is UTF-8 encoded. If the Key parameter includes control characters that are not supported by the XML 1.0 standard, you can specify this header to encode the value of the Key parameter in the response. This parameter is empty by default. Valid value: url
Content-Length	String	Yes	151	The length of the HTTP message body. OSS uses this header to verify the message body of the request and deletes the specified objects only when the length of the message body is the same as the value of this header.
Content-MD5	String	Yes	ohhnqLBJFiKkPSBO1eNaUA==	The MD5 hash calculated by using the MD5 algorithm. This header is used to check whether the content of the received message is the same as that of the sent message. After the Content-MD5 request header is uploaded, OSS calculates the MD5 hash based on the message body and checks whether the calculated MD5 hash is the same as the Content-MD5 value specified in the request header. Note To obtain the value of the Content-MD5 header, encrypt the message body of the DeleteMultipleObjects request by using the MD5 algorithm to obtain a 128-bit byte array, and then encode the byte array in Base64.

Request elements


Element	Type	Required	Example	Description
Delete	Container	Yes	N/A	The container that stores the DeleteMultipleObjects request content. Child nodes: Object and Quite Parent nodes: none
Object	Container	Yes	N/A	The container that stores the information about an object. Child nodes: Key Parent nodes: Delete
Key	String	Yes	test.jpg	The name of the object that you want to delete. Parent nodes: Object
Quiet	Enumerated string	Yes	false	Specifies whether to enable the Quiet return mode. The DeleteMultipleObjects operation provides the following return modes: quiet: The response does not include a message body. verbose: The response includes a message body that contains the information about all deleted objects. By default, this mode is used. Valid values: true and false Default value: false Parent nodes: Delete
VersionId	String	No	CAEQNRiBgIDyz.6C0BYiIGQ2NWEwNmVhNTA3ZTQ3MzM5ODliYjM1ZTdjYjA4****	The version ID of the object that you want to delete. Parent nodes: Object

Response elements


Element	Type	Example	Description
Deleted	Container	N/A	The container that stores information about the deleted objects. Important The Deleted response element contains information only about the deleted objects and does not contain information about the objects that fail to be deleted. To obtain the names of the objects that fail to be deleted in the DeleteMultipleObjects operation, you can compare values of the Delete header in the request and the values of the Deleted header in the response. Child nodes: Key Parent nodes: DeleteResult
DeleteResult	Container	N/A	The container that stores the result of the DeleteMultipleObjects request. Child nodes: Deleted Parent nodes: none
Key	String	demo.jpg	The name of the deleted object. Parent nodes: Deleted
EncodingType	String	url	The encoding type of the name of the deleted object in the response. If encoding-type is specified in the request, the object name is encoded in the returned result. Parent nodes: Container
DeleteMarker	Boolean	true	Indicates whether the deleted version is a delete marker. true: The deleted version is a delete marker. false: The specified version is not a delete marker. Note The DeleteMarker element is included in the response only when the DeleteMultipleObjects operation involves the creation or permanent deletion of a delete marker.
DeleteMarkerVersionId	String	THUQNRiBgICEoPiC0BYiIGMxZWJmYmMzYjE0OTQ0ZmZhYjgzNzkzYjc2NjZk****	The version ID of the delete marker. Parent nodes: Deleted

Examples

Sample requests in which the Verbose mode is enabled

POST /?delete HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Wed, 29 Feb 2012 12:26:16 GMT
Content-Length:151
Content-MD5: ohhnqLBJFiKkPSBO1eNaUA==
Authorization: OSS qn6qrrqxo2oawuk53otfjbyc:+z3gBfnFAxBcBDgx27Y/jEfb****
<?xml version="1.0" encoding="UTF-8"?>
<Delete> 
  <Quiet>false</Quiet>  
  <Object> 
    <Key>multipart.data</Key> 
  </Object>  
  <Object> 
    <Key>test.jpg</Key> 
  </Object>  
  <Object> 
    <Key>demo.jpg</Key> 
  </Object> 
</Delete>

Sample responses

HTTP/1.1 200 OK
x-oss-request-id: 78320852-7eee-b697-75e1-b6db0f4849e7
Date: Wed, 29 Feb 2012 12:26:16 GMT
Content-Length: 244
Content-Type: application/xml
Connection: keep-alive
Server: AliyunOSS
<?xml version="1.0" encoding="UTF-8"?>
<DeleteResult xmlns="http://doc.oss-cn-hangzhou.aliyuncs.com">
    <Deleted>
       <Key>multipart.data</Key>
    </Deleted>
    <Deleted>
       <Key>test.jpg</Key>
    </Deleted>
    <Deleted>
       <Key>demo.jpg</Key>
    </Deleted>
</DeleteResult>

Sample requests in which the Quiet mode is enabled

POST /?delete HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Wed, 29 Feb 2012 12:33:45 GMT
Content-Length:151
Content-MD5: ohhnqLBJFiKkPSBO1eNaUA==
Authorization: OSS qn6qrrqxo2oawuk53otfjbyc:WuV0Jks8RyGSNQrBca64kEEx****
<?xml version="1.0" encoding="UTF-8"?>
<Delete> 
  <Quiet>true</Quiet>  
  <Object> 
    <Key>multipart.data</Key> 
  </Object>  
  <Object> 
    <Key>test.jpg</Key> 
  </Object>  
  <Object> 
    <Key>demo.jpg</Key> 
  </Object> 
</Delete>

Sample responses

HTTP/1.1 200 OK
x-oss-request-id: 559CC9BDC755F95A64485981
Date: Wed, 29 Feb 2012 12:33:45 GMT
Content-Length: 0
Connection: keep-alive
Server: AliyunOSS

Sample requests in which version IDs are not specified

POST /?delete HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Tue, 09 Apr 2019 04:20:03 GMT
Content-MD5: xSLOYWaPC86RPwWXNiFeXg==
Authorization: OSS xq39jyxyrddzvvh:/G5kxMIw1ilMQjPp2HkJEp5q****
<?xml version="1.0" encoding="UTF-8"?>
<Delete> 
  <Quiet>false</Quiet>  
  <Object> 
    <Key>multipart.data</Key>
  </Object>  
  <Object> 
    <Key>test.jpg</Key> 
  </Object>
</Delete>

Sample responses

In this example, the version IDs of the two objects to be deleted (multipart.data and test.jpg) are not specified. Therefore, OSS adds delete markers to the two objects, and returns <DeleteMarker>true</DeleteMarker> and <DeleteMarkerVersionId>XXXXXX</DseleteMarkerVersionId>.

HTTP/1.1 200 OK
x-oss-request-id: 5CAC1D73B7AEADE01700****
Date: Tue, 09 Apr 2019 04:20:03 GMT
Content-Type: application/xml
Connection: keep-alive
Server: AliyunOSS
<?xml version="1.0" encoding="UTF-8"?>
<DeleteResult>
    <Deleted>
       <Key>multipart.data</Key>
       <DeleteMarker>true</DeleteMarker>
       <DeleteMarkerVersionId>CAEQMhiBgIDXiaaB0BYiIGQzYmRkZGUxMTM1ZDRjOTZhNjk4YjRjMTAyZjhl****</DeleteMarkerVersionId>
    </Deleted>
    <Deleted>
       <Key>test.jpg</Key>
       <DeleteMarker>true</DeleteMarker>
       <DeleteMarkerVersionId>CAEQMhiBgIDB3aWB0BYiIGUzYTA3YzliMzVmNzRkZGM5NjllYTVlMjYyYWEy****</DeleteMarkerVersionId>
    </Deleted>
</DeleteResult>

Sample requests in which version IDs are specified

Note You must specify the name of the object when you specify the VersionId parameter.

POST /?delete HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Tue, 09 Apr 2019 06:09:34 GMT
Content-Length:151
Content-MD5: 2Tpk+dL/tGyuSA+YCEuSVg==
Authorization: OSS qac50zy2vbvbq4z:/pingCxyqfxc0+50Bfi2SX9c****
<?xml version="1.0" encoding="UTF-8"?>
<Delete> 
  <Quiet>false</Quiet>  
  <Object> 
    <Key>multipart.data</Key>
    <VersionId>CAEQNRiBgIDyz.6C0BYiIGQ2NWEwNmVhNTA3ZTQ3MzM5ODliYjM1ZTdjYjA4****</VersionId>
  </Object>
</Delete>

Sample responses

In this example, the key and the version ID of the deleted object are returned.

HTTP/1.1 200 OK
x-oss-request-id: 5CAC371EB7AEADE01700****
Date: Tue, 09 Apr 2019 06:09:34 GMT
Content-Length: 244
Content-Type: application/xml
Connection: keep-alive
Server: AliyunOSS
<?xml version="1.0" encoding="UTF-8"?>
<DeleteResult xmlns="http://doc.oss-cn-hangzhou.aliyuncs.com">
    <Deleted>
       <Key>multipart.data</Key>
       <VersionId>CAEQNRiBgIDyz.6C0BYiIGQ2NWEwNmVhNTA3ZTQ3MzM5ODliYjM1ZTdjYjA4****</VersionId>
    </Deleted>
</DeleteResult>

Sample request to delete a delete marker by specifying the versionId parameter

POST /?delete HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Tue, 09 Apr 2019 06:14:50 GMT
Content-Length: 178
Content-MD5: dX9IFePFgYhmINvAhG30Bg==
Authorization: OSS 9dfwrokza5gf1p7:iyl6IU6TcfFXcu5p0ds5dUdo****
<?xml version="1.0" encoding="UTF-8"?>
<Delete> 
  <Quiet>false</Quiet>  
  <Object> 
    <Key>multipart.data</Key>
    <VersionId>CAEQNRiBgICEoPiC0BYiIGMxZWJmYmMzYjE0OTQ0ZmZhYjgzNzkzYjc2NjZk****</VersionId>
  </Object>
</Delete>

Sample responses

In this example, the Key parameter indicates the name of the deleted object and the VersionId parameter indicates the deleted version of the object.
DeleteMarker indicates that a delete marker is deleted. DeleteMarkerVersionId indicates the version ID of the delete marker. In this case, the values of VersionId and DeleteMarkerVersionId are the same, and DeleteMarker and DeleteMarkerVersionId are returned together.

HTTP/1.1 200 OK
x-oss-request-id: 5CAC385AB7AEADE01700****
Date: Tue, 09 Apr 2019 06:14:50 GMT
Content-Length: 364
Content-Type: application/xml
Connection: keep-alive
Server: AliyunOSS
<?xml version="1.0" encoding="UTF-8"?>
<DeleteResult xmlns="http://doc.oss-cn-hangzhou.aliyuncs.com">
    <Deleted>
       <Key>demo.jpg</Key>
       <VersionId>CAEQNRiBgICEoPiC0BYiIGMxZWJmYmMzYjE0OTQ0ZmZhYjgzNzkzYjc2NjZk****</VersionId>
       <DeleteMarker>true</DeleteMarker>
       <DeleteMarkerVersionId>THUQNRiBgICEoPiC0BYiIGMxZWJmYmMzYjE0OTQ0ZmZhYjgzNzkzYjc2NjZk****</DeleteMarkerVersionId>
    </Deleted>
</DeleteResult>

SDKs

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

Error codes


Error code	HTTP status code	Description
InvalidDigest	400	The error message returned because the Content-MD5 value that is calculated by OSS based on the message body is different from the Content-MD5 value that is specified in the request header.
MalformedXML	400	The error message returned because the size of the message body exceeds 2 MB. A DeleteMultipleObjects request can contain a message body of up to 2 MB. The error message returned because the number of objects that you want to delete at a time exceeds 1,000. You can delete up to 1,000 objects at a time by calling the DeleteMultipleObjects operation.
FileImmutable	409	The error message returned because the data that you want to delete or modify is protected by a retention policy.