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Classic ASP Examples

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(Classic ASP) Amazon S3 List More than 1000 Objects in Bucket

S3 limits the size of the "List Objects" response to 1000 objects. To retrieve a listing of all of the objects in a bucket containing more than 1000 objects, we'll need to send several requests using continuation tokens.

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ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
'  This example assumes the Chilkat HTTP API to have been previously unlocked.
'  See HTTP Unlock Sample for sample code.

set http = Server.CreateObject("Chilkat_9_5_0.Http")

'  Insert your access key here:
http.AwsAccessKey = "AWS_ACCESS_KEY"

'  Insert your secret key here:
http.AwsSecretKey = "AWS_SECRET_KEY"

'  For the example, we'll get a listing containing approx. 25 objects
'  using continuation tokens with an artificially low max-keys set to 5.
'  (You may omit the max-keys query parameter to get the default 1000 maximum
'  number of keys per request.)

set sbContinuationToken = Server.CreateObject("Chilkat_9_5_0.StringBuilder")
bGetMore = 1
set sbUri = Server.CreateObject("Chilkat_9_5_0.StringBuilder")
set xml = Server.CreateObject("Chilkat_9_5_0.Xml")

set dt = Server.CreateObject("Chilkat_9_5_0.CkDateTime")

Do While bGetMore = 1

    '  Make sure to set the "list-type" query param equal to "2".
    '  This chooses the GET Bucket (List Objects) Version 2 of the method.
    success = sbUri.SetString("chilkat100?list-type=2&max-keys=5")
    If (sbContinuationToken.Length > 0) Then
        success = sbUri.Append("&continuation-token=")
        success = sbUri.Append(sbContinuationToken.GetEncoded("url","utf-8"))
    End If

    strXml = http.S3_ListBucketObjects(sbUri.GetAsString())
    If (http.LastMethodSuccess <> 1) Then
        Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
        Response.End
    End If

    Response.Write "<pre>" & Server.HTMLEncode( "Response status code = " & http.LastStatus) & "</pre>"

    success = xml.LoadXml(strXml)
    If (success <> 1) Then
        Response.Write "<pre>" & Server.HTMLEncode( xml.LastErrorText) & "</pre>"
        Response.End
    End If

    '  If the response status code was not 200, then the XML response is not a
    '  listing of objects, but instead contains error information.
    If (http.LastStatus <> 200) Then
        Response.Write "<pre>" & Server.HTMLEncode( xml.GetXml()) & "</pre>"
        Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
        Response.End
    End If

    '  If this is not the final response, then we'll get an XML response that begins
    '  like this.  (The IsTruncated child will be "true", and the NextContinuationToken
    '  will have a value to be used in the next request.)
    '  	<?xml version="1.0" encoding="UTF-8" ?>
    '  	<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    '  	    <Name>chilkat100</Name>
    '  	    <Prefix />
    '  	    <NextContinuationToken>1Mlcx+W9OKsr8cxp3DP6r71wgsTUMj0vqlntWoaJKNbYdrauLdf40LsUdBeSYGFhzbGIHdcf5DSLcEBWbqG+1fW1UcQkUW1V4qgQONAKOwb8y8vOLJAQ8iQ==</NextContinuationToken>
    '  	    <KeyCount>5</KeyCount>
    '  	    <MaxKeys>5</MaxKeys>
    '  	    <IsTruncated>true</IsTruncated>
    ' 

    '  Iterate over the bucket items in this chunk get information for each..
    numItems = xml.NumChildrenHavingTag("Contents")
    Response.Write "<pre>" & Server.HTMLEncode( "Number of bucket items = " & numItems) & "</pre>"

    i = 0
    Do While i < numItems
        xml.I = i

        itemKey = xml.GetChildContent("Contents[i]|Key")
        itemSize = xml.GetChildIntValue("Contents[i]|Size")
        lastModTimestamp = xml.GetChildContent("Contents[i]|LastModified")

        success = dt.SetFromRfc822(lastModTimestamp)
        '  Get a local date/time.
        bLocal = 1
        ' dtObj is a Chilkat_9_5_0.DtObj
        Set dtObj = dt.GetDtObj(bLocal)

        Response.Write "<pre>" & Server.HTMLEncode( i & ": " & itemKey & ", " & itemSize & ", " & dtObj.Day & "-" _
             & dtObj.Month & "-" & dtObj.Year & ":" & dtObj.Hour & ":" & dtObj.Minute) & "</pre>"

        i = i + 1
    Loop

    '  Check IsTruncated.
    bGetMore = 0
    If (xml.ChildContentMatches("IsTruncated","true",1) = 1) Then
        success = sbContinuationToken.SetString(xml.GetChildContent("NextContinuationToken"))
        If (sbContinuationToken.Length > 0) Then
            bGetMore = 1
        End If

    End If

Loop

'  The output of this example (when tested) was:

'  Response status code = 200
'  Number of bucket items = 5
'  0: Abc.ics, 1833, 25-5-2011:9:53
'  1: Corpse Bride film poster.jpg, 53481, 6-9-2016:13:32
'  2: chiliPepper.gif, 7718, 12-3-2017:12:18
'  3: chilkatdude.jpg, 35137, 20-5-2011:16:14
'  4: cloud.search/dfe/indexer/pscc/2016/3/28/id,x-2-15-0-25-87-0.json, 1238, 2-4-2016:12:0
'  Response status code = 200
'  Number of bucket items = 5
'  0: cloud.search/dfe/indexer/pscc/2016/3/28/idx-2-15-0-25-87-0.json, 1238, 2-4-2016:11:33
'  1: dude.gif, 6373, 25-5-2011:17:29
'  2: french.txt, 47, 12-3-2017:12:18
'  3: hamlet.xml, 279658, 2-5-2016:12:21
'  4: hamlet_play.xml, 279658, 20-3-2017:8:22
'  Response status code = 200
'  Number of bucket items = 5
'  0: images/sea_creatures/starfish123.jpg, 6229, 19-1-2017:10:45
'  1: images/sea_creatures/starfishåäö.jpg, 6229, 19-1-2017:12:7
/
'  2: new folder/, 0, 26-11-2014:12:36
'  3: new_starfish.jpg, 6229, 20-3-2017:8:22
'  4: pigs.xml, 2804, 20-3-2017:8:22
'  Response status code = 200
'  Number of bucket items = 5
'  0: somethingBig.zip, 13089458, 26-9-2016:9:29
'  1: starfish.jpg, 6229, 12-3-2017:12:18
'  2: starfish/, 0, 10-11-2014:10:7
'  3: starfish/starfish.jpg, 6229, 10-11-2014:10:8
'  4: starfish/starfish2.jpg, 6229, 19-11-2014:10:36
'  Response status code = 200
'  Number of bucket items = 5
'  0: starfish/starfish3.jpg, 6229, 24-11-2014:14:33
'  1: starfish2.jpg, 5987, 20-4-2012:12:6
'  2: starfish3.jpg, 5987, 11-4-2012:7:10
'  3: starfishA.jpg, 6229, 10-5-2016:8:44
'  4: starfishCust.jpg, 6229, 12-11-2014:18:25
'  Response status code = 200
'  Number of bucket items = 1
'  0: xyz.ics, 1833, 25-5-2011:8:52
' 
' 

%>
</body>
</html>

 

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