google sign in

[danilo73]

hello.

I'm triyng to implement access to my website with google signin in java.

I use 

GoogleIdTokenVerifier verifier = new GoogleIdTokenVerifier.Builder(transport, factory).setAudience(Collections.singletonList(idClientGoogle)).build();

String googleParameter=request.getParameter("credential"); is ok

idToken = verifier.verify(googleParameter); is null

in localhost is ok

can someone help me?

Thanks