PowerBuilder

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.

PowerBuilder

integer li_rc
long li_Success
oleobject loo_Http
string ls_BucketName
string ls_StrXml
oleobject loo_Xml
string ls_Key
string ls_LastModified
string ls_ETag
string ls_SizeDecimalStr
string ls_StorageClass
string ls_ID
string ls_DisplayName
string ls_ListBucketResult_xmlns
string ls_Name
long li_MaxKeys
string ls_IsTruncated
long i
long li_Count_i

li_Success = 0

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

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

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

//  Insert your AccessKey Secret here:
loo_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
loo_Http.AwsEndpoint = "oss-us-east-1.aliyuncs.com"

ls_BucketName = "chilkat"

ls_StrXml = loo_Http.S3_ListBucketObjects(ls_BucketName)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    return
end if

Write-Debug "Response status code = " + string(loo_Http.LastStatus)

loo_Xml = create oleobject
li_rc = loo_Xml.ConnectToNewObject("Chilkat.Xml")

li_Success = loo_Xml.LoadXml(ls_StrXml)
if li_Success <> 1 then
    Write-Debug loo_Xml.LastErrorText
    destroy loo_Http
    destroy loo_Xml
    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 loo_Http.LastStatus <> 200 then
    Write-Debug loo_Xml.GetXml()
    Write-Debug "Failed."
    destroy loo_Http
    destroy loo_Xml
    return
end if

//  A sample response is shown below.
Write-Debug loo_Xml.GetXml()
Write-Debug "----"

//  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>

ls_ListBucketResult_xmlns = loo_Xml.GetAttrValue("xmlns")
ls_Name = loo_Xml.GetChildContent("Name")
li_MaxKeys = loo_Xml.GetChildIntValue("MaxKeys")
ls_IsTruncated = loo_Xml.GetChildContent("IsTruncated")
i = 0
li_Count_i = loo_Xml.NumChildrenHavingTag("Contents")
do while i < li_Count_i
    loo_Xml.I = i
    ls_Key = loo_Xml.GetChildContent("Contents[i]|Key")
    ls_LastModified = loo_Xml.GetChildContent("Contents[i]|LastModified")
    ls_ETag = loo_Xml.GetChildContent("Contents[i]|ETag")
    ls_SizeDecimalStr = loo_Xml.GetChildContent("Contents[i]|Size")
    ls_StorageClass = loo_Xml.GetChildContent("Contents[i]|StorageClass")
    ls_ID = loo_Xml.GetChildContent("Contents[i]|Owner|ID")
    ls_DisplayName = loo_Xml.GetChildContent("Contents[i]|Owner|DisplayName")
    i = i + 1
loop


destroy loo_Http
destroy loo_Xml