(Delphi ActiveX) HTTP PUT JSON

Demonstrates how to send a JSON PUT and get the JSON response body.

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
req: TChilkatHttpRequest;
http: TChilkatHttp;
jsonText: WideString;
responseBody: WideString;

begin
// 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}';

// To use SSL/TLS, simply use "https://" in the URL.

// 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.

responseBody := http.PutText('http://json.penzance.org/request',jsonText,'utf-8','application/jsonrequest',0,0);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
  end
else
  begin
    // Display the JSON response.
    Memo1.Lines.Add(responseBody);

  end;
end;