Lazarus Pascal
Lazarus Pascal
Get the JWS Payload as a String
See more JSON Web Signatures (JWS) Examples
Demonstrates Jws.GetPayload, which returns the payload of a loaded JWS as text, decoded using the given charset.
Background. In practice, validate the signature before trusting the payload. Getting the payload retrieves the signed content.
Chilkat Lazarus Pascal Downloads
program ChilkatDemo;
// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils,
CkDllLoader,
Chilkat.Jws;
// ---------------------------------------------------------------------------
procedure RunDemo;
var
success: Boolean;
jws: TJws;
jwsCompact: string;
payload: string;
begin
success := False;
jws := TJws.Create;
// Load the JWS compact serialization.
jwsCompact := 'eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>';
success := jws.LoadJws(jwsCompact);
if (success = False) then
begin
WriteLn(jws.LastErrorText);
Exit;
end;
// Return the JWS payload as text, decoded using the given charset.
payload := jws.GetPayload('utf-8');
if (jws.LastMethodSuccess = False) then
begin
WriteLn(jws.LastErrorText);
Exit;
end;
WriteLn(payload);
jws.Free;
end;
// ---------------------------------------------------------------------------
begin
try
RunDemo;
except
on E: Exception do
WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
end;
WriteLn;
{$IFDEF MSWINDOWS}
WriteLn('Press Enter to exit...');
ReadLn;
{$ENDIF}
end.