Unicode C++
Unicode C++
eBay -- Download Data using FileTransferService
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Demonstrates how to download a data file using the eBay File Transfer API.Chilkat Unicode C++ Downloads
#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkXmlW.h>
#include <CkHttpResponseW.h>
#include <CkBinDataW.h>
#include <CkMimeW.h>
#include <CkStringBuilderW.h>
#include <CkGzipW.h>
#include <CkZipW.h>
#include <CkZipEntryW.h>
void ChilkatSample(void)
{
bool 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 ..."
const wchar_t *accessToken = L"EBAY_ACCESS_TOKEN";
CkHttpW http;
CkHttpRequestW req;
req.put_HttpVerb(L"POST");
req.put_Path(L"/FileTransferService");
req.put_ContentType(L"application/xml");
// Build the XML body for the request.
CkXmlW xml;
xml.put_Tag(L"downloadFileRequest");
xml.AddAttribute(L"xmlns",L"http://www.ebay.com/marketplace/services");
xml.UpdateChildContent(L"taskReferenceId",L"50013004806");
xml.UpdateChildContent(L"fileReferenceId",L"50015579016");
req.LoadBodyFromString(xml.getXml(),L"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(L"X-EBAY-SOA-OPERATION-NAME",L"downloadFile");
req.AddHeader(L"X-EBAY-SOA-SECURITY-TOKEN",accessToken);
CkHttpResponseW resp;
success = http.HttpSReq(L"storage.sandbox.ebay.com",443,true,req,resp);
if (success == false) {
wprintf(L"%s\n",http.lastErrorText());
return;
}
int statusCode = resp.get_StatusCode();
wprintf(L"Response status code = %d\n",statusCode);
CkBinDataW responseBody;
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(L"qa_output/response.mime");
if (statusCode != 200) {
wprintf(L"Failed.\n");
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.
CkMimeW mime;
success = mime.LoadMimeBd(responseBody);
if (success == false) {
wprintf(L"%s\n",mime.lastErrorText());
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.get_NumParts() != 2) {
wprintf(L"Expected the MIME to have 2 parts.\n");
wprintf(L"NumParts = %d\n",mime.get_NumParts());
wprintf(L"Failed.\n");
return;
}
// Get the XML from the 1st MIME sub-part.
CkMimeW part0;
success = mime.PartAt(0,part0);
if (success == false) {
wprintf(L"%s\n",mime.lastErrorText());
return;
}
const wchar_t *downloadResponseXml = part0.getBodyDecoded();
CkXmlW xmlResp;
xmlResp.LoadXml(downloadResponseXml);
wprintf(L"Download Response XML:\n");
wprintf(L"%s\n",xmlResp.getXml());
wprintf(L"----\n");
// Now get the zip from the second part (index=1), unzip, and examine..
CkMimeW part1;
success = mime.PartAt(1,part1);
if (success == false) {
wprintf(L"%s\n",mime.lastErrorText());
return;
}
CkBinDataW zipData;
part1.GetBodyBd(zipData);
// Check to see if we have a zip or gzip.
CkStringBuilderW sbContentType;
sbContentType.Append(part1.contentType());
CkXmlW xmlFromZip;
if (sbContentType.Contains(L"gzip",false) == true) {
// This is a gzip compressed file.
CkGzipW gzip;
// in-place uncompress the data.
// Note: The UncompressBd method was added in Chilkat v9.5.0.67
success = gzip.UncompressBd(zipData);
if (success == false) {
wprintf(L"%s\n",gzip.lastErrorText());
return;
}
xmlFromZip.LoadXml(zipData.getString(L"utf-8"));
}
else {
// This is a zip archive.
// Load the body into a Zip object.
CkZipW zip;
success = zip.OpenBd(zipData);
if (success == false) {
wprintf(L"%s\n",zip.lastErrorText());
return;
}
// Save the .zip to a file (so we can examine it for debugging if something is not as expected)
zipData.WriteFile(L"qa_output/ebay_data.zip");
// The zip should contain a single XML file.
if (zip.get_NumEntries() != 1) {
wprintf(L"Expected the .zip to have 1 entry.\n");
wprintf(L"NumEntries = %d\n",zip.get_NumEntries());
wprintf(L"Failed.\n");
return;
}
CkZipEntryW entry;
success = zip.EntryAt(0,entry);
if (success == false) {
wprintf(L"%s\n",zip.lastErrorText());
return;
}
xmlFromZip.LoadXml(entry.unzipToString(0,L"utf-8"));
}
wprintf(L"XML contained in the zip:\n");
wprintf(L"%s\n",xmlFromZip.getXml());
wprintf(L"----\n");
wprintf(L"Success.\n");
}