CookieStore using JAX-RS

AuthenticationFilter.java

import org.apache.http.Header;
import org.apache.http.client.CookieStore;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.cookie.BasicClientCookie;
import org.apache.http.impl.cookie.RFC6265StrictSpec;

import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.client.ClientResponseContext;
import javax.ws.rs.client.ClientResponseFilter;
import javax.ws.rs.core.Cookie;
import javax.ws.rs.core.NewCookie;
import java.io.IOException;
import java.util.List;
import java.util.Map;

public class AuthenticationFilter implements ClientResponseFilter, ClientRequestFilter {

	private CookieStore cookieStore;

	public EngooAuthenticationFilter() {
		cookieStore = new BasicCookieStore();
	}

	@Override
	public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
		for (final Map.Entry<String, NewCookie> entry : responseContext.getCookies().entrySet()) {
			final var cookie = entry.getValue().toCookie();
      cookieStore.addCookie(new BasicClientCookie(cookie.getName(), cookie.getValue()));
		}
	}

	@Override
	public void filter(ClientRequestContext requestContext) throws IOException {
		if(cookieStore.getCookies().isEmpty()){
			return;
		}
		final RFC6265StrictSpec spec = new RFC6265StrictSpec();
		for (final Header cookieHeader: spec.formatCookies(cookieStore.getCookies())) {
			requestContext.getHeaders().add(cookieHeader.getName(), cookieHeader.getValue());
		}
	}
}

Main.java

public class Main {
 
  public static void main(String[] args){
      newClient()
			.target("https://mywebsite.com/api")
			.register(AuthenticationFilter.class) 
      // .register(new AuthenticationFilter())  // or ...
      ;
  }
  
}