Xojo Plugin

OSS List Bucket Objects (Alibaba Cloud)

See more Alibaba Cloud OSS Examples

Demonstrates how to list the objects in a bucket.

The Chilkat S3 functions in the HTTP class are compatible with Alibaba Cloud's OSS service.

Xojo Plugin

Dim success As Boolean
success = False

// This example assumes the Chilkat HTTP API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http

// Insert your AccessKey ID here:
http.AwsAccessKey = "access-key"

// Insert your AccessKey Secret here:
http.AwsSecretKey = "secret-key"

// To list objects in a bucket located in a different region, use the endpoint for that region, such as "oss-cn-hangzhou.aliyuncs.com 	"
// See Alibaba Object Storage Service Regions and Endpoints
http.AwsEndpoint = "oss-us-east-1.aliyuncs.com"

Dim bucketName As String
bucketName = "chilkat"

Dim strXml As String
strXml = http.S3_ListBucketObjects(bucketName)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

System.DebugLog("Response status code = " + Str(http.LastStatus))

Dim xml As New Chilkat.Xml
success = xml.LoadXml(strXml)
If (success <> True) Then
    System.DebugLog(xml.LastErrorText)
    Return
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
    System.DebugLog(xml.GetXml())
    System.DebugLog("Failed.")
    Return
End If

// A sample response is shown below.
System.DebugLog(xml.GetXml())
System.DebugLog("----")

// Use this online tool to generate parsing code from sample XML: 
// Generate Parsing Code from XML

// <?xml version="1.0" encoding="UTF-8"?>
// <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
//     <Name>chilkat</Name>
//     <Prefix/>
//     <Marker/>
//     <MaxKeys>1000</MaxKeys>
//     <IsTruncated>false</IsTruncated>
//     <Contents>
//         <Key>orchard.json</Key>
//         <LastModified>2021-10-29T16:58:12.000Z</LastModified>
//         <ETag>"303FB46CF341094FEF6274B7789CD6AA"</ETag>
//         <Size>22</Size>
//         <StorageClass>STANDARD</StorageClass>
//         <Owner>
//             <ID>5035535379748121</ID>
//             <DisplayName>5035535379748121</DisplayName>
//         </Owner>
//     </Contents>
//     <Contents>
//         <Key>seahorse.jpg</Key>
//         <LastModified>2021-10-29T16:52:01.000Z</LastModified>
//         <ETag>"A8551F0A5437F43A796FCA7623EE9232"</ETag>
//         <Size>24388</Size>
//         <StorageClass>STANDARD</StorageClass>
//         <Owner>
//             <ID>5035535379748121</ID>
//             <DisplayName>5035535379748121</DisplayName>
//         </Owner>
// 
//     </Contents>
// </ListBucketResult>

Dim Key As String
Dim LastModified As String
Dim ETag As String
Dim SizeDecimalStr As String
Dim StorageClass As String
Dim ID As String
Dim DisplayName As String

Dim ListBucketResult_xmlns As String
ListBucketResult_xmlns = xml.GetAttrValue("xmlns")
Dim Name As String
Name = xml.GetChildContent("Name")
Dim MaxKeys As Int32
MaxKeys = xml.GetChildIntValue("MaxKeys")
Dim IsTruncated As String
IsTruncated = xml.GetChildContent("IsTruncated")
Dim i As Int32
i = 0
Dim count_i As Int32
count_i = xml.NumChildrenHavingTag("Contents")
While i < count_i
    xml.I = i
    Key = xml.GetChildContent("Contents[i]|Key")
    LastModified = xml.GetChildContent("Contents[i]|LastModified")
    ETag = xml.GetChildContent("Contents[i]|ETag")
    SizeDecimalStr = xml.GetChildContent("Contents[i]|Size")
    StorageClass = xml.GetChildContent("Contents[i]|StorageClass")
    ID = xml.GetChildContent("Contents[i]|Owner|ID")
    DisplayName = xml.GetChildContent("Contents[i]|Owner|DisplayName")
    i = i + 1
Wend