How to use

getAuthenticationManager

method

in

org.springframework.security.config.web.server.ServerHttpSecurity$OAuth2LoginSpec

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = getRedirectWebFilter();
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(getAuthenticationMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(clientRegistrationRepository);
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(createAttemptAuthenticationRequestMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(clientRegistrationRepository);
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(createAttemptAuthenticationRequestMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}