(Delphi ActiveX) HTTP POST x-www-form-urlencoded

Demonstrates how to send a simple x-www-form-urlencoded POST.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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;
jsonStr: WideString;
req: TChilkatHttpRequest;
resp: TChilkatHttpResponse;
responseBody: WideString;
fac: TCkFileAccess;
filepath: WideString;

begin
success := 0;

http := TChilkatHttp.Create(Self);

jsonStr := '{ some json ... }';

req := TChilkatHttpRequest.Create(Self);
// This query parameter just happens to be named "json" and contains JSON text.
req.AddParam('json',jsonStr);

// We can optionally add more query parameters. 
req.AddParam('abc','123');
req.AddParam('xml','<abc>123</abc>');

// Note: Just because we passed a query param named "json" or "xml" means nothing special.  It's still just
// a name=value query parameter..

req.HttpVerb := 'POST';
req.ContentType := 'application/x-www-form-urlencoded';

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpReq('http://example.com/xyz/connect/report',req.ControlInterface,resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

if (resp.StatusCode <> 200) then
  begin
    Memo1.Lines.Add('Hey, I didn''t receive the expected response status code!');
    Memo1.Lines.Add('status code = ' + IntToStr(resp.StatusCode));
  end;

// Could be error text if the status code wasn't what we expected, or could be the response
// body you're seeking..
responseBody := resp.BodyStr;
Memo1.Lines.Add(responseBody);

fac := TCkFileAccess.Create(Self);
filepath := 'some file path';
success := fac.WriteEntireTextFile(filepath,responseBody,'utf-8',0);
if (success <> 1) then
  begin
    Memo1.Lines.Add(fac.LastErrorText);
  end;
end;