spring boot webclient blocking not supported

Question

The following function:

public ScoringResponse search(SearchRequest searchRequest) {
    return webClient.post()
            .bodyValue(searchRequest)
            .retrieve()
            .onStatus(HttpStatusCode::isError, ERROR_HANDLER::handleError)
            .bodyToMono(ScoringResponse.class)
            .timeout(Duration.ofMillis(5_000))
            .subscribeOn(Schedulers.boundedElastic())
            .block();
}

It return this error:

java.lang.IllegalStateException: block()/blockFirst()/blockLast() are
blocking, which is not supported in thread reactor-http-epoll-2

Answer 1

try this,

public Mono<ScoringResponse> search(SearchRequest searchRequest) {
return webClient.post()
        .bodyValue(searchRequest)
        .retrieve()
        .onStatus(HttpStatus::isError, ERROR_HANDLER::handleError)
        .bodyToMono(ScoringResponse.class)
        .timeout(Duration.ofMillis(5_000))
        .subscribeOn(Schedulers.boundedElastic());                        
}