(Delphi DLL) HttpPostJson2 Example

Demonstrates use of the HttpPostJson2 method.

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
success: Boolean;
jsonBody: PWideChar;
resp: HCkHttpResponse;
statusCode: Integer;
json: HCkJsonObject;

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

//  See PostJson2Async Example for the async equivalent of this example.

http := CkHttp_Create();

//  Sends a POST equivalent to the following CURL command:

//  curl -X POST https://sandbox.plaid.com/institutions/get \
//    -H 'content-type: application/json' \
//    -d '{
//      "client_id": String,
//      "secret":String,
//      "count": Number,
//      "offset": Number
//    }'

//  Suppress some default headers that would automatically added..
CkHttp_putAcceptCharset(http,'');
CkHttp_putUserAgent(http,'');
CkHttp_putAcceptLanguage(http,'');
CkHttp_putAllowGzip(http,False);

jsonBody := '{"client_id": "PLAID_CLIENT_ID", "secret":"PLAID_SECRET", "count": 10, "offset": 0}';
resp := CkHttp_PostJson2(http,'https://sandbox.plaid.com/institutions/get','application/json',jsonBody);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

statusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response status code = ' + IntToStr(statusCode));

//  Examine the JSON response..
json := CkJsonObject_Create();
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add('JSON Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(json));

CkHttpResponse_Dispose(resp);

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;