ResourceServerWebClientChanges.java

// pass the base 64 encoded String of the Keystore and keystore password
KeyManagerFactory keyManagerFactory = SSLContextHelper.getKeyStore(encodedKeystoreString, keystorePassword);
// pass the base 64 encoded String of the Truststore and truststore password
TrustManagerFactory trustManagerFactory = SSLContextHelper.getTrustStore(encodedTruststoreString, truststorePassword);
// Construct the SslContext using keyManagerFactory & trustManagerFactory
SslContext sslContext = SSLContextHelper.sslContext(keyManagerFactory, trustManagerFactory);

HttpClient resourceServerHttpClient = HttpClient.create()
      .tcpConfiguration(client -> client.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000))
      .secure(sslContextSpec -> {
          sslContextSpec.sslContext(sslContext);
      });
ClientHttpConnector customHttpConnector = new ReactorClientHttpConnector(resourceServerHttpClient);

return WebClient.builder()
      // base path of the client, this way we need to set the complete url again
      .baseUrl(testClientBaseUrl)
      .clientConnector(customHttpConnector)
      .filter(oauth)
      .filter(logRequest())
      .filter(logResponse())
      .build();