GET Bucket (List Objects) Version 1

Description

Important

This API has been revised. We recommend that you use the newer version, GET Bucket (List Objects) version 2, when developing applications. For more information, see GET Bucket (List Objects) Version 2. For backward compatibility, Amazon S3 continues to support GET Bucket (List Objects) version 1.

This implementation of the GET operation returns some or all (up to 1,000) of the objects in a bucket. You can use the request parameters as selection criteria to return a subset of the objects in a bucket. A 200 OK response can contain valid or invalid XML. Be sure to design your application to parse the contents of the response and handle it appropriately.

To use this implementation of the operation, you must have READ access to the bucket.

Note

To get a list of your buckets, see GET Service.

Requests

Syntax


GET / HTTP/1.1
Host: BucketName.s3.amazonaws.com
Date: date
Authorization: authorization string (see Authenticating Requests (AWS Signature Version
		4))

Request Parameters

This implementation of GET uses the parameters in the following table to return a subset of the objects in a bucket.

Parameter	Description	Required
`delimiter`	A delimiter is a character you use to group keys. If you specify a `prefix`, all keys that contain the same string between the `prefix` and the first occurrence of the delimiter after the prefix are grouped under a single result element called `CommonPrefixes`. If you don't specify the `prefix` parameter, the substring starts at the beginning of the key. The keys that are grouped under the `CommonPrefixes` result element are not returned elsewhere in the response. Type: String Default: None	No
`encodingtype`	Requests Amazon S3 to encode the response and specifies the encoding method to use. An object key can contain any Unicode character. However, XML 1.0 parsers cannot parse some characters, such as characters with an ASCII value from 0 to 10. For characters that are not supported in XML 1.0, you can add this parameter to request that Amazon S3 encode the keys in the response. Type: String Default: None Valid value: `url`	No
`marker`	Specifies the key to start with when listing objects in a bucket. Amazon S3 returns object keys in UTF-8 binary order, starting with key after the marker in order. Type: String Default: None	No
`max-keys`	Sets the maximum number of keys returned in the response body. If you want to retrieve fewer than the default 1,000 keys, you can add this to your request. The response might contain fewer keys, but it never contains more. If there are additional keys that satisfy the search criteria, but these keys were not returned because `max-keys` was exceeded, the response contains `<IsTruncated>true</IsTruncated>`. To return the additional keys, see `marker`. Type: String Default: 1,000	No
`prefix`	Limits the response to keys that begin with the specified prefix. You can use prefixes to separate a bucket into different groupings of keys. (You can think of using `prefix` to make groups in the same way you would use a folder in a file system.) Type: String Default: None	No

Request Elements

This implementation of the operation does not use request elements.

Request Headers

This implementation of the operation uses only request headers that are common to all operations. For more information, see Common Request Headers.

Responses

Response Headers

This implementation of the operation uses only response headers that are common to most responses. For more information, see Common Response Headers.

Response Elements

Name	Description
`Contents`	Metadata about each object returned. Type: XML metadata Ancestor: `ListBucketResult`
`CommonPrefixes`	All of the keys rolled up in a common prefix count as a single return when calculating the number of returns. See `MaxKeys`. A response can contain `CommonPrefixes` only if you specify a delimiter. `CommonPrefixes` contains all (if there are any) keys between `Prefix` and the next occurrence of the string specified by the delimiter. `CommonPrefixes` lists keys that act like subdirectories in the directory specified by `Prefix`. For example, if the prefix is `notes/` and the delimiter is a slash (/) as in `notes/summer/july`, the common prefix is `notes/summer/`. All of the keys that roll up into a common prefix count as a single return when calculating the number of returns. See `MaxKeys`. Type: String Ancestor: `ListBucketResult`
`Delimiter`	Causes keys that contain the same string between the prefix and the first occurrence of the delimiter to be rolled up into a single result element in the `CommonPrefixes` collection. These rolled-up keys are not returned elsewhere in the response. Each rolled-up result counts as only one return against the `MaxKeys` value. Type: String Ancestor: `ListBucketResult`
`DisplayName`	Object owner's name. Important This value is only included in the response in the US East (N. Virginia), US West (N. California), US West (Oregon), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), EU (Ireland), and South America (São Paulo) regions. For a list of all the Amazon S3 supported regions and endpoints, see Regions and Endpoints in the AWS General Reference. Type: String Ancestor: `ListBucketResult.Contents.Owner`
`Encoding-Type`	Encoding type used by Amazon S3 to encode object key names in the XML response. If you specify the `encodingtype` request parameter, Amazon S3 includes this element in the response, and returns encoded key name values in the following response elements: `Delimiter`, `Marker`, `Prefix`, `NextMarker`, `Key` Type: String Ancestor: `ListBucketResult`
`ETag`	The entity tag is an MD5 hash of the object. The `ETag` reflects only changes to the contents of an object, not its metadata. Type: String Ancestor: `ListBucketResult.Contents`
`ID`	Object owner's ID. Type: String Ancestor: `ListBucketResult.Contents.Owner`
`IsTruncated`	Specifies whether (`true`) or not (`false`) all of the results were returned. If the number of results exceeds that specified by `MaxKeys`, all of the results might not be returned. Type: Boolean Ancestor: `ListBucketResult`
`Key`	The object's key. Type: String Ancestor: `ListBucketResult.Contents`
`LastModified`	Date and time the object was last modified. Type: Date Ancestor: `ListBucketResult.Contents`
`Marker`	Indicates where in the bucket listing begins. `Marker` is included in the response if it was sent with the request. Type: String Ancestor: `ListBucketResult`
`MaxKeys`	The maximum number of keys returned in the response body. Type: String Ancestor: `ListBucketResult`
`Name`	Name of the bucket. Type: String Ancestor: `ListBucketResult`
`NextMarker`	When the response is truncated (that is, the `IsTruncated` element value in the response is true), you can use the key name in this field as a `marker` in the subsequent request to get next set of objects. Amazon S3 lists objects in UTF-8 character encoding in lexicographical order. Note This element is returned only if you specify a `delimiter` request parameter. If the response does not include the `NextMarker` and it is truncated, you can use the value of the last `Key` in the response as the `marker` in the subsequent request to get the next set of object keys. Type: String Ancestor: `ListBucketResult`
`Owner`	Bucket owner. Type: String Children: DisplayName, ID Ancestor: `ListBucketResult.Contents` \| `CommonPrefixes`
`Prefix`	Keys that begin with the indicated prefix. Type: String Ancestor: `ListBucketResult`
`Size`	Size in bytes of the object. Type: String Ancestor: `ListBucketResult.Contents`
`StorageClass`	`STANDARD` \| `STANDARD_IA` \| `ONEZONE_IA` \| `REDUCED_REDUNDANCY` \| `GLACIER` Type: String Ancestor: `ListBucketResult.Contents`

Special Errors

This implementation of the operation does not return special errors. For general information about Amazon S3 errors and a list of error codes, see Error Responses.

Examples

Sample Request

This request returns the objects in BucketName.


GET / HTTP/1.1
Host: BucketName.s3.amazonaws.com
Date: Wed, 12 Oct 2009 17:50:00 GMT
Authorization: authorization string
Content-Type: text/plain

Sample Response


<?xml version="1.0" encoding="UTF-8"?>
<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <Name>bucket</Name>
    <Prefix/>
    <Marker/>
    <MaxKeys>1000</MaxKeys>
    <IsTruncated>false</IsTruncated>
    <Contents>
        <Key>my-image.jpg</Key>
        <LastModified>2009-10-12T17:50:30.000Z</LastModified>
        <ETag>&quot;fba9dede5f27731c9771645a39863328&quot;</ETag>
        <Size>434234</Size>
        <StorageClass>STANDARD</StorageClass>
        <Owner>
            <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
            <DisplayName>mtd@amazon.com</DisplayName>
        </Owner>
    </Contents>
    <Contents>
       <Key>my-third-image.jpg</Key>
         <LastModified>2009-10-12T17:50:30.000Z</LastModified>
         <ETag>&quot;1b2cf535f27731c974343645a3985328&quot;</ETag>
         <Size>64994</Size>
         <StorageClass>STANDARD_IA</StorageClass>
         <Owner>
            <ID>75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a</ID>
            <DisplayName>mtd@amazon.com</DisplayName>
        </Owner>
    </Contents>
</ListBucketResult>

Sample Request Using Request Parameters

This example lists up to 40 keys in the quotes bucket that start with N and occur lexicographically after Ned.


GET /?prefix=N&marker=Ned&max-keys=40 HTTP/1.1
Host: quotes.s3.amazonaws.com
Date: Wed, 01 Mar  2006 12:00:00 GMT
Authorization: authorization string

Sample Response


HTTP/1.1 200 OK
x-amz-id-2: gyB+3jRPnrkN98ZajxHXr3u7EFM67bNgSAxexeEHndCX/7GRnfTXxReKUQF28IfP
x-amz-request-id: 3B3C7C725673C630
Date: Wed, 01 Mar  2006 12:00:00 GMT
Content-Type: application/xml
Content-Length: 302
Connection: close
Server: AmazonS3

<?xml version="1.0" encoding="UTF-8"?>
<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>quotes</Name>
  <Prefix>N</Prefix>
  <Marker>Ned</Marker>
  <MaxKeys>40</MaxKeys>
  <IsTruncated>false</IsTruncated>
  <Contents>
    <Key>Nelson</Key>
    <LastModified>2006-01-01T12:00:00.000Z</LastModified>
    <ETag>&quot;828ef3fdfa96f00ad9f27c383fc9ac7f&quot;</ETag>
    <Size>5</Size>
    <StorageClass>STANDARD</StorageClass>
    <Owner>
      <ID>bcaf161ca5fb16fd081034f</ID>
      <DisplayName>webfile</DisplayName>
     </Owner>
  </Contents>
  <Contents>
    <Key>Neo</Key>
    <LastModified>2006-01-01T12:00:00.000Z</LastModified>
    <ETag>&quot;828ef3fdfa96f00ad9f27c383fc9ac7f&quot;</ETag>
    <Size>4</Size>
    <StorageClass>STANDARD</StorageClass>
     <Owner>
      <ID>bcaf1ffd86a5fb16fd081034f</ID>
      <DisplayName>webfile</DisplayName>
    </Owner>
 </Contents>
</ListBucketResult>

Sample Request Using a Prefix and Delimiter

For this example, we assume that you have the following keys in your bucket:

sample.jpg

photos/2006/January/sample.jpg

photos/2006/February/sample2.jpg

photos/2006/February/sample3.jpg

photos/2006/February/sample4.jpg

The following GET request specifies the delimiter parameter with value /.


GET /?delimiter=/ HTTP/1.1
Host: example-bucket.s3.amazonaws.com
Date: Wed, 01 Mar  2006 12:00:00 GMT
Authorization: authorization string

The key sample.jpg does not contain the delimiter character, and Amazon S3 returns it in the Contents element in the response. However, all other keys contain the delimiter character. Amazon S3 groups these keys and returns a single CommonPrefixes element with prefix value photos/ that is a substring from the beginning of these keys to the first occurrence of the specified delimiter.


<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>example-bucket</Name>
  <Prefix></Prefix>
  <Marker></Marker>
  <MaxKeys>1000</MaxKeys>
  <Delimiter>/</Delimiter>
  <IsTruncated>false</IsTruncated>
  <Contents>
    <Key>sample.jpg</Key>
    <LastModified>2011-02-26T01:56:20.000Z</LastModified>
    <ETag>&quot;bf1d737a4d46a19f3bced6905cc8b902&quot;</ETag>
    <Size>142863</Size>
    <Owner>
      <ID>canonical-user-id</ID>
      <DisplayName>display-name</DisplayName>
    </Owner>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
  <CommonPrefixes>
    <Prefix>photos/</Prefix>
  </CommonPrefixes>
</ListBucketResult>

The following GET request specifies the delimiter parameter with the value /, and the prefix parameter with the value photos/2006/.


GET /?prefix=photos/2006/&delimiter=/ HTTP/1.1
Host: example-bucket.s3.amazonaws.com
Date: Wed, 01 Mar  2006 12:00:00 GMT
Authorization: authorization string

In response, Amazon S3 returns only the keys that start with the specified prefix. It uses the delimiter character to group keys that contain the same substring until the first occurrence of the delimiter character after the specified prefix. For each such key group, Amazon S3 returns one <CommonPrefixes> element in the response. The keys grouped under this CommonPrefixes element are not returned elsewhere in the response. The value returned in the CommonPrefixes element is a substring that starts at the beginning of the key and ends at the first occurrence of the specified delimiter after the prefix.


<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>example-bucket</Name>
  <Prefix>photos/2006/</Prefix>
  <Marker></Marker>
  <MaxKeys>1000</MaxKeys>
  <Delimiter>/</Delimiter>
  <IsTruncated>false</IsTruncated>

  <CommonPrefixes>
    <Prefix>photos/2006/February/</Prefix>
  </CommonPrefixes>
  <CommonPrefixes>
    <Prefix>photos/2006/January/</Prefix>
  </CommonPrefixes>
</ListBucketResult>

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Document Conventions

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GET Bucket (List Objects) Version 1

Description

Requests

Syntax

Request Parameters

Request Elements

Request Headers

Responses

Response Headers

Response Elements

Special Errors

Examples

Sample Request

Sample Response

Sample Request Using Request Parameters

Sample Response

Sample Request Using a Prefix and Delimiter

Related Resources