Webflux - Spring Boot - 支持 http 代理的 oAuth2 客户端

Question

我正在努力在代理后面使用 oauth2 正确设置 webflux-weblient 。

看来， ServerOAuth2AuthorizedClientExchangeFilterFunction 使用 webclient 的新实例，它不包含我的代理配置。

OAuth2-配置

    ServerOAuth2AuthorizedClientExchangeFilterFunction oauth2ClientFilter = new ServerOAuth2AuthorizedClientExchangeFilterFunction(
      clientRegistrations,
      new UnAuthenticatedServerOAuth2AuthorizedClientRepository());
   oauth2ClientFilter.setDefaultClientRegistrationId("azure");

OAuth2AuthorizedClientResolver.class 包含：

private ReactiveOAuth2AccessTokenResponseClient<OAuth2ClientCredentialsGrantRequest> clientCredentialsTokenResponseClient = new WebClientReactiveClientCredentialsTokenResponseClient();

WebClientReactiveClientCredentialsTokenResponseClient.java

创建一个新的 Web 客户端，如下所示：

private WebClient webClient = WebClient.builder().build();

有人有如何为 oauth2 客户端正确设置 http 代理的示例吗？

Answer 1

感谢 @abhinaba-chakraborty 的不完整答案，我设法根据

WebClient

中的 JVM 参数设置代理。这是我的代码片段，可以帮助其他人解决同样的问题：

这是一个辅助函数，用于获取 JVM 参数并将它们设置为 HttpClient

WebClientReactiveClientCredentialsTokenResponseClient

这是如何为用于调用外部系统的

    public HttpClient proxyHttpClient() {
        String proxyHost = System.getProperty("https.proxyHost");
        String proxyPort = System.getProperty("https.proxyPort");

        if (proxyHost == null && proxyPort == null) {
            return HttpClient.create();
        }

        return HttpClient.create()
                .tcpConfiguration(tcpClient ->
                        tcpClient.proxy(proxy ->
                                proxy.type(ProxyProvider.Proxy.HTTP).host(proxyHost).port(Integer.valueOf(proxyPort))
                        )
                );
    }

配置OAuth2Client（基于@abhinaba-chakraborty的响应）。请注意名为

WebClient

的函数：configureHttpProxy

这是 

    @Bean
    public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
            ReactiveClientRegistrationRepository clientRegistrationRepository,
            ReactiveOAuth2AuthorizedClientService authorizedClientService) {

        return configureHttpProxy(
                new AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager(
                        clientRegistrationRepository,
                        authorizedClientService
                )
        );
    }

    @Bean
    WebClient webClient(ReactiveOAuth2AuthorizedClientManager authorizedClientManager) {
        ServerOAuth2AuthorizedClientExchangeFilterFunction oauth2Client = new ServerOAuth2AuthorizedClientExchangeFilterFunction(authorizedClientManager);
        oauth2Client.setDefaultClientRegistrationId("registration_id");
        return WebClient.builder()
                .filter(oauth2Client)
                .clientConnector(new ReactorClientHttpConnector(HttpClient.create().wiretap(true)))
                .baseUrl(rdoWebClientProperties.getBaseUrl())
                .defaultHeader(rdoWebClientProperties.getApikeyName(), rdoWebClientProperties.getApikeyValue())
                .build();
    }

函数：

configureHttpProxy

希望这会有所帮助。

Answer 2

    private AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager configureHttpProxy(AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager authorizedClientManager) {
        // set the webclient with proxy configuration in the ReactiveOAuth2AccessTokenResponseClient
        WebClientReactiveClientCredentialsTokenResponseClient tokenResponseClient = new WebClientReactiveClientCredentialsTokenResponseClient();
        tokenResponseClient.setWebClient(
                WebClient.builder()
                        .clientConnector(new ReactorClientHttpConnector(proxyHttpClient()))
                        .build()
        );

        // set the ReactiveOAuth2AccessTokenResponseClient with webclient configuration in the ReactiveOAuth2AuthorizedClientProvider
        ClientCredentialsReactiveOAuth2AuthorizedClientProvider authorizedClientProvider = new ClientCredentialsReactiveOAuth2AuthorizedClientProvider();
        authorizedClientProvider.setAccessTokenResponseClient(tokenResponseClient);

        // set the ReactiveOAuth2AuthorizedClientProvider in the ReactiveOAuth2AuthorizedClientManager
        authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);

        return authorizedClientManager;
    }

现在进行实际的 API 调用：

@EnableWebFluxSecurity
public class WebSecurityConfiguration {
  @Bean
  public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
      ReactiveClientRegistrationRepository clientRegistrationRepository,
      ReactiveOAuth2AuthorizedClientService authorizedClientService) {

    ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
        ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
            .clientCredentials()
            .build();

    AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager authorizedClientManager =
        new AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager(
            clientRegistrationRepository, authorizedClientService);
    authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);

    return authorizedClientManager;
  }
  @Bean
  public WebClient webClient(ReactiveOAuth2AuthorizedClientManager authorizedClientManager) {
    ServerOAuth2AuthorizedClientExchangeFilterFunction oauth =new ServerOAuth2AuthorizedClientExchangeFilterFunction(authorizedClientManager);
    return WebClient.builder().filter(oauth).build();
  }
}

供您参考，我使用的是 Spring Boot 版本 2.3.1.RELEASE
我的 application.yaml 看起来像这样：

webClient.get()
        .uri(<protected resource uri which you want to access>)
        .attributes(clientRegistrationId(<The Provider name specified under registration in app yaml>))
        .retrieve()
        .bodyToMono(String.class)
        .map(string
            -> "Retrieved using Client Credentials Grant Type: " + string)
        .subscribe(LOGGER::info);