POST上传

功能介绍

上传对象操作是指在指定的桶内增加一个对象，执行该操作需要用户拥有桶的写权限。

同一个桶中存储的对象名是唯一的。

在桶未开启多版本的情况下，如果在指定的桶内已经有相同的对象键值的对象，用户上传的新对象会覆盖原来的对象；为了确保数据在传输过程中没有遭到破坏，用户可以在表单域中加入Content-MD5参数。在这种情况下，OBS收到上传的对象后，会对对象进行MD5校验，如果不一致则返回出错信息。用户还可以在上传对象时指定x-obs-acl参数，设置对象的权限控制策略。

用户除了可以用PUT直接上传对象外，还可以使用POST上传对象。

单次上传对象大小范围是[0, 5GB]，如果需要上传超过5GB的大文件，需要通过多段操作来分段上传。

该操作支持服务端加密功能。

与PUT上传的区别

PUT上传中参数通过请求头域传递；POST上传则作为消息体中的表单域传递。

PUT上传需在URL中指定对象名；POST上传提交的URL为桶域名，无需指定对象名。两者的请求行分别为：

PUT /ObjectName HTTP/1.1

POST / HTTP/1.1

关于PUT上传的更多详细信息，请参考PUT上传。

多版本

如果桶的多版本状态是开启的，系统会自动为对象生成一个唯一的版本号；如果桶的多版本状态是暂停的，则系统生成的对象版本号为null，并由响应报头x-obs-version-id返回该版本号。关于桶的多版本状态，参见设置桶的多版本状态。

WORM

如果桶的WORM开关是开启的，则可以为对象配置WORM。您可以通过携带元素x-obs-object-lock-mode和x-obs-object-lock-retain-until-date在上传对象的同时指定对象的保护策略，如果您不携带这些元素，但配置了桶级默认WORM策略，则新上传的对象会自动应用默认策略。您还可以在上传后配置或修改对象级WORM保护策略。

在桶的WORM开关开启时，系统会自动打开多版本功能。WORM保护是基于对象版本号的，配置WORM的版本受到WORM保护，没有配置WORM的版本可正常删除。例如，test.txt 001受到WORM保护。此时再次上传同名文件，产生新的对象版本test.txt 002，test.txt 002并未配置WORM，那么test.txt 002就不受保护可以正常删除。当您下载对象时，不指定版本号下载的是最新对象，也就是test.txt 002。

请求消息样式

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POST / HTTP/1.1 
Host: bucketname.obs.region.example.com
User-Agent: browser_data
Accept: file_types
Accept-Language: Regions
Accept-Encoding: encoding
Accept-Charset: character_set
Keep-Alive: 300 
Connection: keep-alive 
Content-Type: multipart/form-data; boundary=9431149156168 
Content-Length: length


--9431149156168 
Content-Disposition: form-data; name="key" 

acl 
--9431149156168 
Content-Disposition: form-data; name="success_action_redirect"
 
success_redirect 
--9431149156168 
Content-Disposition: form-data; name="content-Type" 

content_type 
--9431149156168 
Content-Disposition: form-data; name="x-obs-meta-uuid" 

uuid 
--9431149156168 
Content-Disposition: form-data; name="x-obs-meta-tag" 

metadata 
--9431149156168 
Content-Disposition: form-data; name="AccessKeyId" 

access-key-id 
--9431149156168 
Content-Disposition: form-data; name="policy" 

encoded_policy 
--9431149156168 
Content-Disposition: form-data; name="signature" 

signature= 
--9431149156168 
Content-Disposition: form-data; name="file"; filename="MyFilename" 
Content-Type: image/jpeg 

file_content 
--9431149156168 
Content-Disposition: form-data; name="submit" 

Upload to OBS 
--9431149156168--

请求消息参数

该请求消息中不使用参数。

请求消息头

该请求使用公共的消息头，具体请参见表3。

如果想要获取CORS配置信息，则需要使用的消息头如下表1所示。

请求消息元素

该请求消息的消息元素以表单形式组织，表单字段的具体含义如表2所示。

响应消息样式

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HTTP/1.1 status_code
Content-Type: application/xml 
Location: location
Date: date
ETag: etag

响应消息头

该请求的响应消息使用公共消息头，具体请参考表1。

除公共响应消息头之外，还可能使用如表3中的消息头。

响应消息元素

该请求的响应消息中不带消息元素。

错误响应消息

无特殊错误，所有错误已经包含在表2中。

请求示例：普通POST上传

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POST / HTTP/1.1
Date: WED, 01 Jul 2015 04:15:23 GMT
Host: examplebucket.obs.region.example.com
Content-Type: multipart/form-data; boundary=7db143f50da2
Content-Length: 2424
Origin: www.example.com
Access-Control-Request-Headers:acc_header_1

--7db143f50da2
Content-Disposition: form-data; name="key"

object01
--7db143f50da2
Content-Disposition: form-data; name="acl"

public-read
--7db143f50da2 
Content-Disposition: form-data; name="content-type"

text/plain
--7db143f50da2
Content-Disposition: form-data; name="expires"

WED, 01 Jul 2015 04:16:15 GMT
--7db143f50da2
Content-Disposition: form-data; name="AccessKeyId"

14RZT432N80TGDF2Y2G2
--7db143f50da2
Content-Disposition: form-data; name="policy"

ew0KICAiZXhaaXJhdGlvbiI6ICIyMDE1LTA3LTAxVDEyOjAwOjAwLjAwMFoiLA0KICAiY29uZGl0aW9ucyI6IFsNCiAgICB7ImJ1Y2tldCI6ICJleG1hcGxlYnVja2V0IiB9LA0KICAgIHsiYWNsIjogInB1YmxpYy1yZWFkIiB9LA0KICAgIHsiRXhaaXJlcyI6ICIxMDAwIiB9LA0KICAgIFsiZXEiLCAiJGtleSIsICJvYmplY3QwMSJdLA0KICAgIFsic3RhcnRzLXdpdGgiLCAiJENvbnRlbnQtVHlwZSIsICJ0ZXh0LyJdLA0KICBdDQp9DQo=
--7db143f50da2
Content-Disposition: form-data; name="signature"

Vk6rwO0Nq09BLhvNSIYwSJTRQ+k=
--7db143f50da2
Content-Disposition: form-data; name="x-obs-persistent-headers"
 
test:dmFsdWUx
--7db143f50da2
Content-Disposition: form-data; name="x-obs-grant-read"
 
id=52f24s3593as5730ea4f722483579xxx
--7db143f50da2
Content-Disposition: form-data; name="x-obs-server-side-encryption"
 
kms
--7db143f50da2
Content-Disposition: form-data; name="x-obs-website-redirect-location"
 
http://www.example.com/
--7db143f50da2
Content-Disposition: form-data; name="file"; filename="C:\Testtools\UpLoadFiles\object\1024Bytes.txt"
Content-Type: text/plain

01234567890
--7db143f50da2
Content-Disposition: form-data; name="submit"

Upload
--7db143f50da2--

响应示例：普通POST上传

桶配置cors后，响应会包含Access-Control-*的信息。

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HTTP/1.1 204 No Content
x-obs-request-id: 90E2BA00C26C00000133B442A90063FD
x-obs-id-2: OTBFMkJBMDBDMjZDMDAwMDAxMzNCNDQyQTkwMDYzRkRBQUFBQUFBQWJiYmJiYmJi
Access-Control-Allow-Origin: www.example.com
Access-Control-Allow-Methods: POST,GET,HEAD,PUT
Access-Control-Allow-Headers: acc_header_01
Access-Control-Max-Age: 100
Access-Control-Expose-Headers: exp_header_01
Content-Type: text/xml
Location: http://examplebucket.obs.region.example.com/object01
Date: WED, 01 Jul 2015 04:15:23 GMT
ETag: "ab7abb0da4bca5323ab6119bb5dcd296"

请求示例：带x-obs-acl头域并指定存储类型

带x-obs-acl头域并指定存储类型，重定向头域，上传对象

编码前，policy的内容为

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{
    "expiration":"2018-07-17T04:54:35Z",
    "conditions":[
        {
            "content-type":"text/plain"
        },
        {
            "x-obs-storage-class":"WARM"
        },
        {
            "success_action_redirect":"http://www.example.com"
        },
        {
            "x-obs-acl":"public-read"
        },
        [
            "starts-with",
            "$bucket",
            ""
        ],
        [
            "starts-with",
            "$key",
            ""
        ]
    ]
}

请求示例：

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POST / HTTP/1.1
Host: examplebucket.obs.region.example.com
Accept-Encoding: identity
Content-Length: 947
Content-Type: multipart/form-data; boundary=9431149156168
User-Agent: OBS/Test

--9431149156168
Content-Disposition: form-data; name="x-obs-acl"

public-read
--9431149156168
Content-Disposition: form-data; name="AccessKeyId"

H4IPJX0TQTHTHEBQQCEC
--9431149156168
Content-Disposition: form-data; name="key"

my-obs-object-key-demo
--9431149156168
Content-Disposition: form-data; name="signature"

WNwv8P1ZiWdqPQqjXeLmAfzPDAI=
--9431149156168
Content-Disposition: form-data; name="policy"

eyJleHBpcmF0aW9uIjoiMjAxOC0wNy0xN1QwODozNDoyM1oiLCAiY29uZGl0aW9ucyI6W3siY29udGVudC10eXBlIjoidGV4dC9wbGFpbiJ9LHsieC1vYnMtYWNsIjoicHVibGljLXJlYWQifSxbInN0YXJ0cy13aXRoIiwgIiRidWNrZXQiLCAiIl0sWyJzdGFydHMtd2l0aCIsICIka2V5IiwgIiJdXX0=
--9431149156168
Content-Disposition: form-data; name="content-type"

text/plain
--9431149156168
Content-Disposition: form-data; name="file"; filename="myfile"
Content-Type: text/plain

c2c6cd0f-898e-11e8-aab6-e567c91fb541
52b8e8a0-8481-4696-96f3-910635215a78

--9431149156168--

响应示例：带x-obs-acl头域并指定存储类型

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HTTP/1.1 204 No Content
Server: OBS
Location: http://examplebucket.obs.region.example.com/my-obs-object-key-demo
ETag: "17a83fc8d431273405bd266114b7e034"
x-obs-request-id: 5DEB00000164A728A7C7F4E032214CFA
x-obs-id-2: 32AAAUJAIAABAAAQAAEAABAAAQAAEAABCSwj2PcBE0YcoLHUDO7GSj+rVByzjflA
Date: Tue, 17 Jul 2018 07:33:36 GMT

请求示例：使用token进行鉴权

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POST / HTTP/1.1
Content-Type:multipart/form-data; boundary=9431149156168
Content-Length: 634
Host: examplebucket.obs.region.example.com
 
--9431149156168
Content-Disposition: form-data; name="key"
obj01
 
--9431149156168
Content-Disposition: form-data; name="token"
UDSIAMSTUBTEST002538:XsVcTzR2/A284oE4VH9qPndGcuE=:eyJjb25kaXRpb25zIjogW3siYnVja2V0IjogInRlc3QzMDAzMDU4NzE2NjI2ODkzNjcuMTIifSwgeyJDb250ZW50LVR5cGUiOiAiYXBwbGljYXRpb24veG1sIn0sIFsiZXEiLCAiJGtleSIsICJvYmoudHh0Il1dLCAiZXhwaXJhdGlvbiI6ICIyMDIyLTA5LTA5VDEyOjA5OjI3WiJ9
 
--9431149156168
Content-Disposition: form-data; name="file"; filename="myfile"
Content-Type: text/plain
01234567890
 
--9431149156168--
Content-Disposition: form-data; name="submit"
Upload to OBS

响应示例：使用token进行鉴权

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HTTP/1.1 204 No Content
Server: OBS
Location: http://examplebucket.obs.region.example.com/my-obs-object-key-demo
ETag: "7eda50a430fed940023acb9c4c6a2fff"
x-obs-request-id: 000001832010443D80F30B649B969C47
x-obs-id-2: 32AAAUgAIAABAAAQAAEAABAAAQAAEAABCTj0yO9KJd5In+i9pzTgCDVG9vMnk7O/
Date: Fri,09Sep 2022 02: 24:40 GMT

请求示例：设置对象过期时间

POST / HTTP/1.1 
Date: WED, 01 Jul 2015 04:15:23 GMT 
Host: examplebucket.obs.region.example.com 
Content-Type: multipart/form-data; boundary=148828969260233905620870
Content-Length: 1639 
Origin: www.example.com 
Access-Control-Request-Headers:acc_header_1 
 
--148828969260233905620870 
Content-Disposition: form-data; name="key" 
 
object01
--148828969260233905620870
Content-Disposition: form-data; name="AwsAccessKeyId"
 
55445349414d5354554254455354303030303033
--148828969260233905620870
Content-Disposition: form-data; name="signature"
 
396246666f6f42793872792f7a3958524f6c44334e4e69763950553d--7db143f50da2 
--148828969260233905620870
Content-Disposition: form-data; name="policy" 
 
65794a6c65484270636d463061573975496a6f694d6a41794d7930774e6930784e565178...
--148828969260233905620870
Content-Disposition: form-data; name="x-obs-expires"
 
4
--148828969260233905620870
Content-Disposition: form-data; name="file"; filename="test.txt"
Content-Type: text/plain 
 
01234567890
--148828969260233905620870
Content-Disposition: form-data; name="submit" 
 
Upload 
--148828969260233905620870--

响应示例：设置对象过期时间

 
HTTP/1.1 204 No Content 
Server: OBS 
Date: Thu, 15 Jun 2023 12:39:03 GMT
Connection: keep-alive
Location: http://examplebucket.obs.region.example.com/my-obs-object-key-demo 
x-obs-expiration: expiry-date="Tue, 20 Jun 2023 00:00:00 GMT"
ETag: "d41d8cd98f00b204e9800998ecf8427e"
x-obs-request-id: 00000188BF11049553064911000FC30D
x-obs-id-2: 32AAAUJAIAABAAAQAAEAABAAAQAAEAABCSwj2PcBE0YcoLHUDO7GSj+rVByzjflA 
x-forward-status: 0x40020000000001
x-dae-api-type: REST.POST.OBJECT

请求示例：指定状态码

指定成功响应的状态码为200

POST /srcbucket HTTP/1.1
User-Agent: PostmanRuntime/7.26.8
Accept: */*
Postman-Token: 667dcc44-1c48-41ba-9e41-9f87d8975089
Host: obs.region.example.com
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Content-Type: multipart/form-data; boundary=--------------------------285613759795901770404350
Content-Length: 1134
 
----------------------------285613759795901770404350
Content-Disposition: form-data; name="key"
 
obj
----------------------------285613759795901770404350
Content-Disposition: form-data; name="AwsAccessKeyId"
 
XXXXXXXXXXXXXXX000003
----------------------------285613759795901770404350
Content-Disposition: form-data; name="signature"
 
9rc4bVhDPQ7eHtw17hWtYxLnBWU=
----------------------------285613759795901770404350
Content-Disposition: form-data; name="policy"
 
eyJleHBpcmF0aW9uIjoiMjAyMy0wNi0xNVQxNDoxMTozNFoiLCAiY29uZGl0aW9ucyI6W3siYnVja2V0Ijoic3JjYnVja2V0MiJ9LHsic3VjY2Vzc19hY3Rpb25fc3RhdHVzIjoiMjAwIn0seyJjb250ZW50LXR5cGUiOiJ0ZXh0L3BsYWluIn0seyJrZXkiOiIzMzMifSxdfQ==
----------------------------285613759795901770404350
Content-Disposition: form-data; name="success_action_status"
 
200
----------------------------285613759795901770404350
Content-Disposition: form-data; name="file"; filename="test.txt"
Content-Type: text/plain
 
 
----------------------------285613759795901770404350
Content-Disposition: form-data; name="submit"
 
Upload to OBS
----------------------------285613759795901770404350--

响应示例：指定状态码

指定成功响应的状态码为200，响应消息

HTTP/1.1 200 OK
Server: OBS
Date: Thu, 15 Jun 2023 13:12:51 GMT
Content-Length: 0
Connection: keep-alive
Location: http://obs.region.example.com/srcbucket/obj
ETag: "d41d8cd98f00b204e9800998ecf8427e"
x-obs-request-id: 00000188BF2FF55F5306426E000FE366
x-obs-id-2: 32AAAUJAIAABAAAQAAEAABAAAQAAEAABCScDjcXgZ7oMYSVnZnk4+HrClVwLVPTi
x-forward-status: 0x40020000000001
x-dae-api-type: REST.POST.OBJECT

请求示例：上传时配置对象级WORM保护策略

POST /srcbucket HTTP/1.1
User-Agent: PostmanRuntime/7.26.8
Accept: */*
Postman-Token: 4c2f4c7e-2e0b-46c0-b1a7-4a5da560b6a1
Host: obs.region.example.com
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Content-Type: multipart/form-data; boundary=--------------------------940435396775653808840608
Content-Length: 1409
 
----------------------------940435396775653808840608
Content-Disposition: form-data; name="key"
 
obj
----------------------------940435396775653808840608
Content-Disposition: form-data; name="AwsAccessKeyId"
 
XXXXXXXXXXXXXXX000003
----------------------------940435396775653808840608
Content-Disposition: form-data; name="signature"
 
X/7QiyMYUvxUWk0R5fToeTcgMMU=
----------------------------940435396775653808840608
Content-Disposition: form-data; name="policy"
 
eyJleHBpcmF0aW9uIjoiMjAyMy0wNi0xNVQxNDoyMjo1MVoiLCAiY29uZGl0aW9ucyI6W3sieC1vYnMtb2JqZWN0LWxvY2stcmV0YWluLXVudGlsLWRhdGUiOiJUaHUsIDIwIEp1biAyMDIzIDEzOjEyOjUxIEdNVCJ9LHsieC1vYnMtb2JqZWN0LWxvY2stbW9kZSI6IkNPTVBMSUFOQ0UifSx7ImJ1Y2tldCI6InNyY2J1Y2tldDIifSx7ImNvbnRlbnQtdHlwZSI6InRleHQvcGxhaW4ifSx7ImtleSI6IjMzMyJ9LF19
----------------------------940435396775653808840608
Content-Disposition: form-data; name="x-obs-object-lock-mode"
 
COMPLIANCE
----------------------------940435396775653808840608
Content-Disposition: form-data; name="x-obs-object-lock-retain-until-date"
 
Thu, 20 Jun 2023 13:12:51 GMT
----------------------------940435396775653808840608
Content-Disposition: form-data; name="file"; filename="test.txt"
Content-Type: text/plain
 
 
----------------------------940435396775653808840608
Content-Disposition: form-data; name="submit"
 
Upload to OBS
----------------------------940435396775653808840608--

响应示例：对象级WORM保护策略

HTTP/1.1 204 No Content
Server: OBS
Date: Thu, 15 Jun 2023 13:24:03 GMT
Connection: keep-alive
Location: http://obs.region.example.com/srcbucket/obj
ETag: "d41d8cd98f00b204e9800998ecf8427e"
x-obs-request-id: 00000188BF3A36EE5306427D000FEE0A
x-obs-id-2: 32AAAUJAIAABAAAQAAEAABAAAQAAEAABCS/5pj0p0hAQcDVI3B6E5y167zy4eAQv
x-forward-status: 0x40020000000001
x-dae-api-type: REST.POST.OBJECT