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Glossary
DokumentasiCloud Object StorageAPI DocumentationObject APIsMultipart UploadList Parts

List Parts

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Terakhir diperbarui: 2025-07-17 09:34:40

Overview

This API is used to query the uploaded parts of a specified multipart upload, i.e., listing all successfully uploaded parts of a multipart upload whose uploadId is specified.
Note: Only the root account or sub-accounts granted the permission of the List Part API can call this API.


Requests

Request example

GET /<ObjectKey>?uploadId=UploadId HTTP/1.1
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
Date: GMT Date
Authorization: Auth String
Note:
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com, where <BucketName-APPID> is the bucket name followed by the APPID, such as examplebucket-1250000000 (see Bucket Overview > Basic Information and Bucket Overview > Bucket Naming Conventions), and <Region> is a COS region (see Regions and Access Endpoints).
Authorization: Auth String (See Request Signature for details.)

Request headers

This API only uses Common Request Headers.

Request fields

Parameter
Description
Type
Required
uploadId
Multipart upload ID obtained from the Initiate Multipart Upload API
string
Yes
encoding-type
Encoding type for the returned value
string
No
max-parts
Maximum number of entries to be returned at a time. Maximum value: 1000. Default value: 1000.
int
No
part-number-marker
By default, parts are listed in UTF-8 binary order, starting from the part after the marker.
string
No

Request body

The request body of this request is empty.

Response

Response headers

This API only returns Common Response Headers.

Response body

A successful query returns application/xml data, which includes information about the successfully uploaded parts.
<?xml version="1.0" encoding="UTF-8" ?>
<ListPartsResult>
    <Bucket>examplebucket-1250000000</Bucket>
    <Encoding-type/>
    <Key>exampleobject</Key>
    <UploadId>14846420620b1f381e5d7b057692e131dd8d72dfa28f2633cfbbe4d0a9e8bd0719933545b0</UploadId>
    <Initiator>
        <ID>1250000000</ID>
        <DisplayName>1250000000</DisplayName>
    </Initiator>
    <Owner>
        <ID>qcs::cam::uin/100000000001:uin/100000000001</ID>
        <DisplayName>100000000001</DisplayName>
    </Owner>
    <PartNumberMarker>0</PartNumberMarker>
    <Part>
        <PartNumber>1</PartNumber>
        <LastModified>Tue Jan 17 16:43:37 2017</LastModified>
        <ETag>"a1f8e5e4d63ac6970a0062a6277e191fe09a1382"</ETag>
        <Size>5242880</Size>
    </Part>
    <NextPartNumberMarker>1</NextPartNumberMarker>
    <StorageClass>STANDARD</StorageClass>
    <MaxParts>1</MaxParts>
    <IsTruncated>true</IsTruncated>
</ListPartsResult>
The nodes are described as follows:
Node Name (Keyword)
Parent Node
Description
Type
ListPartsResult
None
Stores the response of List Parts.
Container
Content of ListPartsResult:
Node Name (Keyword)
Parent Node
Description
Type
Bucket
ListPartsResult
Name of the destination bucket for the multipart upload. It is formed by connecting a user-defined string and the system-generated APPID with a hyphen, for example, examplebucket-1250000000.
string
Encoding-Type
ListPartsResult
Encoding type
string
Key
ListPartsResult
Object name
string
UploadId
ListPartsResult
ID of the multipart upload
string
Initiator
ListPartsResult
Information about the request initiator
Container
Owner
ListPartsResult
Information about the part owner
Container
StorageClass
ListPartsResult
Storage class of the parts. Enumerated values: STANDARD, STANDARD_IA, ARCHIVE, DEEP_ARCHIVE. For more information, please see Storage Class Overview.
string
PartNumberMarker
ListPartsResult
By default, parts are listed in UTF-8 binary order, starting from the part after the marker.
string
NextPartNumberMarker
ListPartsResult
If the returned list is truncated, the NextMarker returned will be the starting point of the subsequent list.
string
MaxParts
ListPartsResult
Maximum number of entries to be returned at a time
int
IsTruncated
ListPartsResult
Indicates whether the returned list is truncated. Valid values: true, false
boolean
Part
ListPartsResult
Metadata
Container
Content of Initiator:
Node Name (Keyword)
Parent Node
Description
Type
ID
ListPartsResult.Initiator
Unique ID of the initiator
string
DisplayName
ListPartsResult.Initiator
Username of the initiator
string
Content of Owner:
Node Name (Keyword)
Parent Node
Description
Type
ID
ListPartsResult.Owner
Unique ID of the owner
string
DisplayName
ListPartsResult.Owner
Username of the owner
string
Content of Part:
Node Name (Keyword)
Parent Node
Description
Type
PartNumber
ListPartsResult.Part
Part number
string
LastModified
ListPartsResult.Part
Last modified time of a part
string
ETag
ListPartsResult.Part
MD5 checksum of a part
string
Size
ListPartsResult.Part
Part size, in bytes
string

Error codes

This API returns common error responses and error codes. For more information, see Error Codes.

Examples

Request

GET /exampleobject?uploadId=1585130821cbb7df1d11846c073ad648e8f33b087cec2381df437acdc833cf654b9ecc6361 HTTP/1.1
Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
Date: Wed, 25 Mar 2020 10:07:25 GMT
Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1585130845;1585138045&q-key-time=1585130845;1585138045&q-header-list=date;host&q-url-param-list=uploadid&q-signature=ba8d97cefa396d804524a38d7b5412fb0261****
Connection: close

Response

HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: 1119
Connection: close
Date: Wed, 25 Mar 2020 10:07:25 GMT
Server: tencent-cos
x-cos-request-id: NWU3YjJkNWRfMjNhZjJhMDlfNWY5Ml8zMmUy****



<ListPartsResult>
            <Bucket>examplebucket-1250000000</Bucket>
            <EncodingType/>
            <Key>exampleobject</Key>
            <UploadId>1585130821cbb7df1d11846c073ad648e8f33b087cec2381df437acdc833cf654b9ecc6361</UploadId>
            <Owner>
                <ID>1250000000</ID>
                <DisplayName>1250000000</DisplayName>
            </Owner>
            <PartNumberMarker>0</PartNumberMarker>
            <Initiator>
                <ID>qcs::cam::uin/100000000001:uin/100000000011</ID>
                <DisplayName>100000000011</DisplayName>
            </Initiator>
            <Part>
                <PartNumber>1</PartNumber>
                <LastModified>2020-03-25T10:07:14.000Z</LastModified>
                <ETag>&quot;39270a968a357d24207e9911162507eb&quot;</ETag>
                <Size>1048576</Size>
            </Part>
            <Part>
                <PartNumber>2</PartNumber>
                <LastModified>2020-03-25T10:07:13.000Z</LastModified>
                <ETag>&quot;d899fbd1e06109ea2e4550f5751c88d6&quot;</ETag>
                <Size>1048576</Size>
            </Part>
            <Part>
                <PartNumber>3</PartNumber>
                <LastModified>2020-03-25T10:07:13.000Z</LastModified>
                <ETag>&quot;762890d6c9a871b7bd136037cb2260cd&quot;</ETag>
                <Size>1048576</Size>
            </Part>
            <StorageClass>Standard</StorageClass>
            <MaxParts>1000</MaxParts>
            <IsTruncated>false</IsTruncated>
</ListPartsResult>

Topik sebelumnya: List Multipart UploadsTopik selanjutnya: PUT Object tagging

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