Head Object
Head Object只返回某个Object的meta信息,不返回文件内容。
请求语法HEAD /ObjectName HTTP/1.1
Host: BucketName/oss-cn-hangzhou.aliyuncs.com
Date: GMT Date
Authorization: SignatureValue
请求Header
名称 | 描述 |
If-Modified-Since | 如果指定的时间早于实际修改时间,则返回200 OK和Object Meta;否则返回304 not modified 类型:字符串 默认值:无 |
If-Unmodified-Since | 如果传入参数中的时间等于或者晚于文件实际修改时间,则返回200 OK和Object Meta;否则返回412 precondition failed错误 类型:字符串 默认值:无 |
If-Match | 如果传入期望的ETag和object的 ETag匹配,则返回200 OK和Object Meta;否则返回412 precondition failed错误 类型:字符串 默认值:无 |
If-None-Match | 如果传入的ETag值和Object的ETag不匹配,则返回200 OK和Object Meta;否则返回304 Not Modified 类型:字符串 默认值:无 |
HEAD /oss.jpg HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Fri, 24 Feb 2012 07:32:52 GMT
Authorization: OSS qn6qrrqxo2oawuk53otfj byc:J bzF2LxZUtanlJ5dLA092wpDC/E=
HTTP/1.1 200 OK
x-oss-request-id: 559CC9BDC755F95A64485981
x-oss-object-type: Normal
x-oss-storage-class: Archive
Date: Fri, 24 Feb 2012 07:32:52 GMT
Last-Modified: Fri, 24 Feb 2012 06:07:48 GMT
ETag: "fba9dede5f27731c9771645a39863328"
Content-Length: 344606
Content-Type: image/jpg
Connection: keep-alive
Server: AliyunOSS
HEAD /oss.jpg HTTP/1.1
Host: oss-archive-example.oss-cn-hangzhou.aliyuncs.com
Date: Sat, 15 Apr 2017 07:32:52 GMT
Authorization: OSS e1Unnbm1rgdnpI:KKxkdNrUBu2t1kqlDh0MLbDb99I=
HTTP/1.1 200 OK
x-oss-request-id: 58F71A164529F18D7F000045
x-oss-object-type: Normal
x-oss-storage-class: Archive
x-oss-restore: ongoing-request="true"
Date: Sat, 15 Apr 2017 07:32:52 GMT
Last-Modified: Sat, 15 Apr 2017 06:07:48 GMT
ETag: "fba9dede5f27731c9771645a39863328"
Content-Length: 344606
Content-Type: image/jpg
Connection: keep-alive
Server: AliyunOSS
HEAD /oss.jpg HTTP/1.1
Host: oss-archive-example.oss-cn-hangzhou.aliyuncs.com
Date: Sat, 15 Apr 2017 09:35:51 GMT
Authorization: OSS e1Unnbm1rgdnpI:21qtGJ+ykDVmdu6O6FMJnn+WuBw=
HTTP/1.1 200 OK
x-oss-request-id: 58F725344529F18D7F000055
x-oss-object-type: Normal
x-oss-storage-class: Archive
x-oss-restore: ongoing-request="false", expiry-date="Sun, 16 Apr 2017 08:12:33 GMT"
Date: Sat, 15 Apr 2017 09:35:51 GMT
Last-Modified: Sat, 15 Apr 2017 06:07:48 GMT
ETag: "fba9dede5f27731c9771645a39863328"
Content-Length: 344606
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