Delphi ActiveX

HTTP POST with XML Body

Demonstrates sending an HTTP POST with a XML body. Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
http: TChilkatHttp;
xml: TChilkatXml;
sbRequestBody: TChilkatStringBuilder;
resp: TChilkatHttpResponse;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -X POST https://example.com/StockQuote \
//   -H "Host: www.example.org" \
//   -H "Content-Type: application/soap+xml; charset=utf-8" \
//   -H "SOAPAction: http://www.example.org/StockPrice" \
//   -d '<?xml version="1.0"?>
// 
// <soap:Envelope
// xmlns:soap="http://www.w3.org/2003/05/soap-envelope/"
// soap:encodingStyle="http://www.w3.org/2003/05/soap-encoding">
// 
// <soap:Body xmlns:m="http://www.example.org/stock">
//   <m:GetStockPrice>
//     <m:StockName>IBM</m:StockName>
//   </m:GetStockPrice>
// </soap:Body>
// 
// </soap:Envelope>'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

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

// --------------------------------------------------------------------------------
// Also see Chilkat's Online WSDL Code Generator
// to generate code and SOAP Request and Response XML for each operation in a WSDL.
// --------------------------------------------------------------------------------

// The following XML is sent in the request body.

// <?xml version="1.0" encoding="utf-8"?>
// <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope/" soap:encodingStyle="http://www.w3.org/2003/05/soap-encoding">
//     <soap:Body xmlns:m="http://www.example.org/stock">
//         <m:GetStockPrice>
//             <m:StockName>IBM</m:StockName>
//         </m:GetStockPrice>
//     </soap:Body>
// </soap:Envelope>
// 

xml := TChilkatXml.Create(Self);
xml.Tag := 'soap:Envelope';
xml.AddAttribute('xmlns:soap','http://www.w3.org/2003/05/soap-envelope/');
xml.AddAttribute('soap:encodingStyle','http://www.w3.org/2003/05/soap-encoding');
xml.UpdateAttrAt('soap:Body',1,'xmlns:m','http://www.example.org/stock');
xml.UpdateChildContent('soap:Body|m:GetStockPrice|m:StockName','IBM');

http.SetRequestHeader('SOAPAction','http://www.example.org/StockPrice');
http.SetRequestHeader('Host','www.example.org');
http.SetRequestHeader('Content-Type','application/soap+xml; charset=utf-8');

sbRequestBody := TChilkatStringBuilder.Create(Self);
xml.GetXmlSb(sbRequestBody.ControlInterface);

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpSb('POST','https://example.com/StockQuote',sbRequestBody.ControlInterface,'utf-8','application/soap+xml; charset=utf-8',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add(IntToStr(resp.StatusCode));
Memo1.Lines.Add(resp.BodyStr);
end;