How can SOAP be used with Spring Reactor's WebClient? - spring

Question

I've managed to build an SSL connection to the sandbox server and to send the object as a serialised XML object by applying the content type MediaType.APPLICATION_XML. However, this is not enough as the target service only supports SOAP and expects the message properly wrapped in an envelope.
final var webClient = WebClient.builder()
.baseUrl(fmdConfiguration.getSinglePackUrl())
.clientConnector(connector)
.exchangeStrategies(exchangeStrategies)
.filter(logResponseStatus())
.filter(logRequest())
.build();
return webClient
.method(GET)
.contentType(MediaType.APPLICATION_XML)
.body(BodyInserters.fromObject(request))
.retrieve()
.bodyToMono(SinglePackPingResponse.class);
This is the response from the service:
Unable to create envelope from given source because the root element is not named "Envelope"
Unfortunately the the WebClient doesn't support the media type application/soap+xml. When I try to use it, then the WebClient throws the following error:
org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type 'application/soap+xml;charset=UTF-8' not supported for bodyType=eu.nmvs.SinglePackPingRequest
at org.springframework.web.reactive.function.BodyInserters.unsupportedError(BodyInserters.java:300)

Answer 1

I use:
private void acceptedCodecs(ClientCodecConfigurer clientCodecConfigurer) {
clientCodecConfigurer.customCodecs().encoder(new Jackson2JsonEncoder(new ObjectMapper(), TEXT_XML));
clientCodecConfigurer.customCodecs().decoder(new Jackson2JsonDecoder(new ObjectMapper(), TEXT_XML));
}
and:
webClient = webClientBuilder
.baseUrl(baseUrL)
.filter(logRequest())
.exchangeStrategies(ExchangeStrategies.builder().codecs(this::acceptedCodecs).build()).build();