Delphi ActiveX

Transition from Http.PostJson3 to Http.HttpJson

Provides instructions for replacing deprecated PostJson3 method calls with HttpJson. 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;
url: WideString;
contentType: WideString;
json: TChilkatJsonObject;
responseObj: IChilkatHttpResponse;
responseOut: TChilkatHttpResponse;

begin
success := 0;

http := TChilkatHttp.Create(Self);

url := 'https://example.com/something';
contentType := 'application/json';
json := TChilkatJsonObject.Create(Self);
json.LoadFile('C:/temp/requestBody.json');

// ------------------------------------------------------------------------
// The PostJson3 method is deprecated:

responseObj := http.PostJson3(url,contentType,json.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using HttpJson.
// Your application creates a new, empty HttpResponse object which is passed 
// in the last argument and filled upon success.

responseOut := TChilkatHttpResponse.Create(Self);
success := http.HttpJson('POST',url,json.ControlInterface,contentType,responseOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;
end;