Initiate Multipart Upload

最后更新时间:2020-11-04 15:46:43

    功能描述

    Initiate Multipart Upload 接口请求实现初始化分块上传,成功执行此请求后将返回 UploadId,用于后续的 Upload Part 请求。

    请求

    请求示例

    POST /<ObjectKey>uploads HTTP/1.1
    Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
    Date: GMT Date
    Content-Type: Content Type
    Content-Length: 0
    Authorization: Auth String

    Authorization: Auth String(详情请参见 请求签名 文档)。

    请求参数

    此接口无请求参数。

    请求头

    此接口除使用公共请求头部外,还支持以下请求头部,了解公共请求头部详情请参见 公共请求头部 文档。

    名称 描述 类型 是否必选
    Cache-Control RFC 2616 中定义的缓存指令,将作为对象元数据保存 string
    Content-Disposition RFC 2616 中定义的文件名称,将作为对象元数据保存 string
    Content-Encoding RFC 2616 中定义的编码格式,将作为对象元数据保存 string
    Content-Type RFC 2616 中定义的 HTTP 请求内容类型(MIME),此头部用于描述待上传对象的内容类型,将作为对象元数据保存。
    例如text/htmlimage/jpeg
    string
    Expires RFC 2616 中定义的缓存失效时间,将作为对象元数据保存 string
    x-cos-meta-* 包括用户自定义元数据头部后缀和用户自定义元数据信息,将作为对象元数据保存,大小限制为2KB
    注意:用户自定义元数据信息支持下划线(_),但用户自定义元数据头部后缀不支持下划线,仅支持减号(-)
    string
    x-cos-storage-class 对象存储类型。枚举值请参见 存储类型 文档,例如 MAZ_STANDARD,MAZ_STANDARD_IA,INTELLIGENT_TIERING,MAZ_INTELLIGENT_TIERING,STANDARD_IA,ARCHIVE,DEEP_ARCHIVE。默认值:STANDARD Enum
    x-cos-tagging 对象的标签集合,最多可设置10个标签(例如,Key1=Value1&Key2=Value2)。 标签集合中的 Key 和 Value 必须先进行 URL 编码。 string

    访问控制列表(ACL)相关头部

    在上传对象时可以通过指定下列请求头部来设置对象的访问权限:

    名称 描述 类型 是否必选
    x-cos-acl 定义对象的访问控制列表(ACL)属性。枚举值请参见 ACL 概述 文档中对象的预设 ACL 部分,例如 default,private,public-read 等,默认为 default
    注意:当前访问策略条目限制为1000条,如果您不需要进行对象 ACL 控制,请设置为 default 或者此项不进行设置,默认继承存储桶权限
    Enum
    x-cos-grant-read 赋予被授权者读取对象的权限,格式为 id="[OwnerUin]",例如 id="100000000001",可使用半角逗号(,)分隔多组被授权者,例如id="100000000001",id="100000000002" string
    x-cos-grant-read-acp 赋予被授权者读取对象的访问控制列表(ACL)的权限,格式为 id="[OwnerUin]",例如 id="100000000001",可使用半角逗号(,)分隔多组被授权者,例如id="100000000001",id="100000000002" string
    x-cos-grant-write-acp 赋予被授权者写入对象的访问控制列表(ACL)的权限,格式为 id="[OwnerUin]",例如 id="100000000001",可使用半角逗号(,)分隔多组被授权者,例如id="100000000001",id="100000000002" string
    x-cos-grant-full-control 赋予被授权者操作对象的所有权限,格式为 id="[OwnerUin]",例如 id="100000000001",可使用半角逗号(,)分隔多组被授权者,例如id="100000000001",id="100000000002" string

    服务端加密(SSE)相关头部

    在上传对象时可以使用服务端加密,请参见 服务端加密专用头部

    请求体

    此接口无请求体。

    响应

    响应头

    此接口除返回公共响应头部外,还返回以下响应头部,了解公共响应头部详情请参见 公共响应头部 文档。

    服务端加密(SSE)相关头部

    如果在上传对象时使用了服务端加密,则此接口将返回服务端加密专用头部,请参见 服务端加密专用头部

    响应体

    请求成功,返回 application/xml 数据,包含分块上传初始化信息。

    <InitiateMultipartUploadResult>
        <Bucket>string</Bucket>
        <Key>string</Key>
        <UploadId>string</UploadId>
    </InitiateMultipartUploadResult>

    具体的节点描述如下:

    节点名称(关键字) 父节点 描述 类型
    InitiateMultipartUploadResult 保存 Initiate Multipart Upload 结果的所有信息 Container

    Container 节点 InitiateMultipartUploadResult 的内容:

    节点名称(关键字) 父节点 描述 类型
    Bucket InitiateMultipartUploadResult 目标存储桶 string
    Key InitiateMultipartUploadResult 目标对象键 string
    UploadId InitiateMultipartUploadResult 在后续 Upload Part 中使用的 UploadId string

    错误码

    此接口遵循统一的错误响应和错误码,详情请参见 错误码 文档。

    实际案例

    案例一:简单案例

    请求

    POST /exampleobject?uploads HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
    Date: Wed, 25 Mar 2020 10:07:01 GMT
    Content-Type: video/mp4
    Content-Length: 0
    Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1585130821;1585138021&q-key-time=1585130821;1585138021&q-header-list=content-length;content-type;date;host&q-url-param-list=uploads&q-signature=38c5a4b181067206cdbdf65f6a4d662b2291****
    Connection: close

    响应

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 230
    Connection: close
    Date: Wed, 25 Mar 2020 10:07:01 GMT
    Server: tencent-cos
    x-cos-request-id: NWU3YjJkNDVfNDliNTJhMDlfYzZhMl8yOTVj****
    
    <InitiateMultipartUploadResult>
        <Bucket>examplebucket-1250000000</Bucket>
        <Key>exampleobject</Key>
        <UploadId>1585130821cbb7df1d11846c073ad648e8f33b087cec2381df437acdc833cf654b9ecc6361</UploadId>
    </InitiateMultipartUploadResult>

    案例二:使用请求头部指定元数据和 ACL

    请求

    POST /exampleobject?uploads HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
    Date: Thu, 28 May 2020 08:35:34 GMT
    Content-Type: video/mp4
    Cache-Control: max-age=86400
    Content-Disposition: attachment; filename=example.jpg
    x-cos-meta-example-field: example-value
    x-cos-acl: public-read
    Content-Length: 0
    Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590654934;1590662134&q-key-time=1590654934;1590662134&q-header-list=cache-control;content-disposition;content-length;content-type;date;host;x-cos-acl;x-cos-meta-example-field&q-url-param-list=uploads&q-signature=5465e9e05cd638e549f66457235d488bfb02****
    Connection: close

    响应

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 230
    Connection: close
    Date: Thu, 28 May 2020 08:35:34 GMT
    Server: tencent-cos
    x-cos-request-id: NWVjZjc3ZDZfOThjMjJhMDlfMjg5N18zNWYy****
    
    <InitiateMultipartUploadResult>
        <Bucket>examplebucket-1250000000</Bucket>
        <Key>exampleobject</Key>
        <UploadId>1590654934dfb1343b4323b711afc22569c18af51596d4f2e40faf392fe1bb469c5b77115f</UploadId>
    </InitiateMultipartUploadResult>

    案例三:使用服务端加密 SSE-COS

    请求

    POST /exampleobject?uploads HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
    Date: Thu, 28 May 2020 08:43:58 GMT
    Content-Type: video/mp4
    x-cos-server-side-encryption: AES256
    Content-Length: 0
    Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590655438;1590662638&q-key-time=1590655438;1590662638&q-header-list=content-length;content-type;date;host;x-cos-server-side-encryption&q-url-param-list=uploads&q-signature=24fccaa68a5eb5e0a9e959dfd9493e3a0671****
    Connection: close

    响应

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 230
    Connection: close
    Date: Thu, 28 May 2020 08:43:58 GMT
    Server: tencent-cos
    x-cos-request-id: NWVjZjc5Y2VfZjhjODBiMDlfMjIyOGFfMzYxYWVm****
    x-cos-server-side-encryption: AES256
    
    <InitiateMultipartUploadResult>
        <Bucket>examplebucket-1250000000</Bucket>
        <Key>exampleobject</Key>
        <UploadId>15906554384f160dd0a272ebb6fbcdb0ffbb61adb2b46fa6b9f2ffabcfb2940b8f72277952</UploadId>
    </InitiateMultipartUploadResult>

    案例四:使用服务端加密 SSE-KMS

    请求

    POST /exampleobject?uploads HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
    Date: Thu, 28 May 2020 08:44:19 GMT
    Content-Type: video/mp4
    x-cos-server-side-encryption: cos/kms
    x-cos-server-side-encryption-cos-kms-key-id: 48ba38aa-26c5-11ea-855c-52540085****
    x-cos-server-side-encryption-context: eyJhdXRob3IiOiJmeXNudGlhbiIsImNvbXBhbnkiOiJUZW5jZW50In0=
    Content-Length: 0
    Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590655459;1590662659&q-key-time=1590655459;1590662659&q-header-list=content-length;content-type;date;host;x-cos-server-side-encryption;x-cos-server-side-encryption-context;x-cos-server-side-encryption-cos-kms-key-id&q-url-param-list=uploads&q-signature=11ab592d5aba2e740be67f69dfa254631293****
    Connection: close

    响应

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 230
    Connection: close
    Date: Thu, 28 May 2020 08:44:20 GMT
    Server: tencent-cos
    x-cos-request-id: NWVjZjc5ZTNfMmZiOTJhMDlfMzJlNDJfMjkzNGJi****
    x-cos-server-side-encryption: cos/kms
    x-cos-server-side-encryption-cos-kms-key-id: 48ba38aa-26c5-11ea-855c-52540085****
    
    <InitiateMultipartUploadResult>
        <Bucket>examplebucket-1250000000</Bucket>
        <Key>exampleobject</Key>
        <UploadId>15906554607990121702e8e4b706eb0f12b8568a3f3b0b76b884e4df676ed50291f0b17131</UploadId>
    </InitiateMultipartUploadResult>

    案例五:使用服务端加密 SSE-C

    请求

    POST /exampleobject?uploads HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
    Date: Thu, 28 May 2020 08:44:41 GMT
    Content-Type: video/mp4
    x-cos-server-side-encryption-customer-algorithm: AES256
    x-cos-server-side-encryption-customer-key: MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=
    x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG8g==
    Content-Length: 0
    Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590655481;1590662681&q-key-time=1590655481;1590662681&q-header-list=content-length;content-type;date;host;x-cos-server-side-encryption-customer-algorithm;x-cos-server-side-encryption-customer-key;x-cos-server-side-encryption-customer-key-md5&q-url-param-list=uploads&q-signature=abd12e9b8c4334a803b5ed8cc03c697904f8****
    Connection: close

    响应

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 230
    Connection: close
    Date: Thu, 28 May 2020 08:44:41 GMT
    Server: tencent-cos
    x-cos-request-id: NWVjZjc5ZjlfOGJjOTJhMDlfNzJmYV8xOTcy****
    x-cos-server-side-encryption-customer-algorithm: AES256
    x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG8g==
    
    <InitiateMultipartUploadResult>
        <Bucket>examplebucket-1250000000</Bucket>
        <Key>exampleobject</Key>
        <UploadId>15906554815fb0c8bda2edae20d895ad7452e949bf51541b31ca14a029fb6f1617f10ca186</UploadId>
    </InitiateMultipartUploadResult>

    Was this page helpful?

    本页内容是否解决了您的问题?

    • 完全没帮助
    • 文档较差
    • 文档一般
    • 文档不错
    • 文档很好
    反馈
    帮助