Delphi ActiveX

HTTPS GET URL with URL Encoded Query Params

See more HTTP Examples

Creates a URL with URL encoded query params, and sends an HTTPS GET to the URL. 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;
sbUrl: TChilkatStringBuilder;
sbValue: TChilkatStringBuilder;
http: TChilkatHttp;
responseBody: WideString;

begin
success := 0;

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

// Create a URL with URL-encoded query params.
sbUrl := TChilkatStringBuilder.Create(Self);
sbUrl.Append('https://www.example.com/something?');

// If we know a query param value does not have any special chars requiring URL encoding,
// just add it.  In this case, there is no need to URL encode "123" because "123" url encoded is still just "123".
sbUrl.Append('abc=123&xyz=');

sbValue := TChilkatStringBuilder.Create(Self);
sbValue.Append('this is a test');

sbUrl.Append('msg=');
sbUrl.Append(sbValue.GetEncoded('url','utf-8'));

// sbUrl contains:  https://www.example.com/something?abc=123&xyz=msg=this%20is%20a%20test
Memo1.Lines.Add(sbUrl.GetAsString());

// Send the GET request and get the response body, which is assumed to be text of some sort (HTML, XML, JSON, etc.)
// (Chilkat automatically decompresses gzipped responses)
http := TChilkatHttp.Create(Self);
responseBody := http.QuickGetStr(sbUrl.GetAsString());
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(responseBody);
end;