Go Requires Chilkat v11.0.0+
Go
eBay -- Download Data using FileTransferService
See more eBay Examples
Demonstrates how to download a data file using the eBay File Transfer API.Chilkat Go Downloads
success := false
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// Use a previously obtained access token. The token should look something like this:
// "AgAAAA**AQA ..."
accessToken := "EBAY_ACCESS_TOKEN"
http := chilkat.NewHttp()
req := chilkat.NewHttpRequest()
req.SetHttpVerb("POST")
req.SetPath("/FileTransferService")
req.SetContentType("application/xml")
// Build the XML body for the request.
xml := chilkat.NewXml()
xml.SetTag("downloadFileRequest")
xml.AddAttribute("xmlns","http://www.ebay.com/marketplace/services")
xml.UpdateChildContent("taskReferenceId","50013004806")
xml.UpdateChildContent("fileReferenceId","50015579016")
req.LoadBodyFromString(*xml.GetXml(),"utf-8")
// The XML body looks like this:
// <?xml version="1.0" encoding="UTF-8"?>
// <downloadFileRequest xmlns="http://www.ebay.com/marketplace/services">
// <taskReferenceId>50013004806</taskReferenceId>
// <fileReferenceId>50015579016</fileReferenceId>
// </downloadFileRequest>
req.AddHeader("X-EBAY-SOA-OPERATION-NAME","downloadFile")
req.AddHeader("X-EBAY-SOA-SECURITY-TOKEN",accessToken)
resp := chilkat.NewHttpResponse()
success = http.HttpSReq("storage.sandbox.ebay.com",443,true,req,resp)
if success == false {
fmt.Println(http.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
return
}
statusCode := resp.StatusCode()
fmt.Println("Response status code = ", statusCode)
responseBody := chilkat.NewBinData()
resp.GetBodyBd(responseBody)
// We can save the response body to a file for examination if we get an unanticipated response.
// (It's binary, so it won't open well in a text editor.)
responseBody.WriteFile("qa_output/response.mime")
if statusCode != 200 {
fmt.Println("Failed.")
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
return
}
// The response body looks like this:
// --MIMEBoundaryurn_uuid_2B668636C1E17A4D4114925305818684241
// Content-Type: application/xop+xml; charset=utf-8; type="text/xml"
// Content-Transfer-Encoding: binary
// Content-ID: <0.urn:uuid:2B668636C1E17A4D4114925305818684242>
//
// <?xml version='1.0' encoding='UTF-8'?>
// <downloadFileResponse xmlns="http://www.ebay.com/marketplace/services">
// <ack>Success</ack>
// <version>1.1.0</version>
// <timestamp>2017-04-18T15:49:41.868Z</timestamp>
// <fileAttachment>
// <Size>587</Size>
// <Data>
// <xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:urn:uuid:A37C3C73E994C267F11492530585522"/>
// </Data>
// </fileAttachment>
// </downloadFileResponse>
// --MIMEBoundaryurn_uuid_2B668636C1E17A4D4114925305818684241
// Content-Type: application/zip
// Content-Transfer-Encoding: binary
// Content-ID: <urn:uuid:A37C3C73E994C267F11492530585522>
//
// <the binary bytes of the zip start here...>
//
// Load the binary response into a MIME object.
mime := chilkat.NewMime()
success = mime.LoadMimeBd(responseBody)
if success == false {
fmt.Println(mime.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
return
}
// Make sure we have 2 sub-parts. The 1st sub-part is the XML response, the 2nd sub-part
// is the zip containing the data.
// Note: The 2nd sub-part can be a "zip" or "gzip". These are two different file formats.
// A zip is indicated with a Content-Type header equal to "application/zip",
// whereas a gzip is indicated with a Content-Type header equal to "application/x-gzip"
if mime.NumParts() != 2 {
fmt.Println("Expected the MIME to have 2 parts.")
fmt.Println("NumParts = ", mime.NumParts())
fmt.Println("Failed.")
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
return
}
// Get the XML from the 1st MIME sub-part.
part0 := chilkat.NewMime()
success = mime.PartAt(0,part0)
if success == false {
fmt.Println(mime.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
return
}
downloadResponseXml := part0.GetBodyDecoded()
xmlResp := chilkat.NewXml()
xmlResp.LoadXml(*downloadResponseXml)
fmt.Println("Download Response XML:")
fmt.Println(*xmlResp.GetXml())
fmt.Println("----")
// Now get the zip from the second part (index=1), unzip, and examine..
part1 := chilkat.NewMime()
success = mime.PartAt(1,part1)
if success == false {
fmt.Println(mime.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
return
}
zipData := chilkat.NewBinData()
part1.GetBodyBd(zipData)
// Check to see if we have a zip or gzip.
sbContentType := chilkat.NewStringBuilder()
sbContentType.Append(part1.ContentType())
xmlFromZip := chilkat.NewXml()
if sbContentType.Contains("gzip",false) == true {
// This is a gzip compressed file.
gzip := chilkat.NewGzip()
// in-place uncompress the data.
// Note: The UncompressBd method was added in Chilkat v9.5.0.67
success = gzip.UncompressBd(zipData)
if success == false {
fmt.Println(gzip.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
zipData.DisposeBinData()
sbContentType.DisposeStringBuilder()
xmlFromZip.DisposeXml()
gzip.DisposeGzip()
return
}
xmlFromZip.LoadXml(*zipData.GetString("utf-8"))
} else {
// This is a zip archive.
// Load the body into a Zip object.
zip := chilkat.NewZip()
success = zip.OpenBd(zipData)
if success == false {
fmt.Println(zip.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
zipData.DisposeBinData()
sbContentType.DisposeStringBuilder()
xmlFromZip.DisposeXml()
gzip.DisposeGzip()
zip.DisposeZip()
return
}
// Save the .zip to a file (so we can examine it for debugging if something is not as expected)
zipData.WriteFile("qa_output/ebay_data.zip")
// The zip should contain a single XML file.
if zip.NumEntries() != 1 {
fmt.Println("Expected the .zip to have 1 entry.")
fmt.Println("NumEntries = ", zip.NumEntries())
fmt.Println("Failed.")
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
zipData.DisposeBinData()
sbContentType.DisposeStringBuilder()
xmlFromZip.DisposeXml()
gzip.DisposeGzip()
zip.DisposeZip()
return
}
entry := chilkat.NewZipEntry()
success = zip.EntryAt(0,entry)
if success == false {
fmt.Println(zip.LastErrorText())
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
zipData.DisposeBinData()
sbContentType.DisposeStringBuilder()
xmlFromZip.DisposeXml()
gzip.DisposeGzip()
zip.DisposeZip()
entry.DisposeZipEntry()
return
}
xmlFromZip.LoadXml(*entry.UnzipToString(0,"utf-8"))
}
fmt.Println("XML contained in the zip:")
fmt.Println(*xmlFromZip.GetXml())
fmt.Println("----")
fmt.Println("Success.")
http.DisposeHttp()
req.DisposeHttpRequest()
xml.DisposeXml()
resp.DisposeHttpResponse()
responseBody.DisposeBinData()
mime.DisposeMime()
part0.DisposeMime()
xmlResp.DisposeXml()
part1.DisposeMime()
zipData.DisposeBinData()
sbContentType.DisposeStringBuilder()
xmlFromZip.DisposeXml()
gzip.DisposeGzip()
zip.DisposeZip()
entry.DisposeZipEntry()