Delphi ActiveX

HTTP PUT JSON

See more HTTP Examples

Demonstrates how to send a JSON PUT and get the JSON response 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;
req: TChilkatHttpRequest;
http: TChilkatHttp;
jsonText: WideString;
resp: TChilkatHttpResponse;

begin
success := 0;

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

req := TChilkatHttpRequest.Create(Self);
http := TChilkatHttp.Create(Self);

// The PUT request to be sent will look like this:

// PUT /request HTTP/1.1
// Content-Type: application/jsonrequest
// Cookie: JSESSIONID=1234
// Content-Encoding: identity
// Host: json.penzance.org
// Accept: application/jsonrequest
// Accept-Encoding:
// Content-Length: 72
// 
// {"user":"doctoravatar@penzance.com","forecast":7,"t":"vlIj","zip":94089}

// First, remove default header fields that would be automatically
// sent.  (These headers are harmless, and shouldn't need to 
// be suppressed, but just in case...)
http.AcceptCharset := '';
http.UserAgent := '';
http.AcceptLanguage := '';

// Suppress the Accept-Encoding header by disallowing 
// a gzip response:
http.AllowGzip := 0;

// If a Cookie needs to be added...
http.SetRequestHeader('Cookie','JSESSIONID=1234');

// Add the Content-Encoding: identity header.
http.SetRequestHeader('Content-Encoding','identity');

// Modify the default "Accept" header:
http.Accept := 'application/jsonrequest';

jsonText := '{"user":"doctoravatar@penzance.com","forecast":7,"t":"vlIj","zip":94089}';

// IMPORTANT: Make sure to change the URL, JSON text,
// and other data items to your own values.  The URL used
// in this example will not actually work.

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpStr('PUT','http://json.penzance.org/request',jsonText,'utf-8','application/jsonrequest',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response status code: ' + IntToStr(resp.StatusCode));
Memo1.Lines.Add('Response JSON:');
Memo1.Lines.Add(resp.BodyStr);
end;