How to extract response header & status code from Spring 5 WebClient ClientResponse

You can use the exchange function of webclient e.g.

Mono<String> reponse = webclient.get().uri("https://stackoverflow.com").exchange().doOnSuccess(clientResponse -> System.out.println("clientResponse.headers() = " + clientResponse.headers())).doOnSuccess(clientResponse -> System.out.println("clientResponse.statusCode() = " + clientResponse.statusCode())).flatMap(clientResponse -> clientResponse.bodyToMono(String.class));

then you can convert bodyToMono etc

I needed to check the response details(headers, status, etc) and body as well.

The only way I was able to do it was by using .exchange() with two subscribe() as the following example:

    Mono<ClientResponse> clientResponse = WebClient.builder().build()            .get().uri("https://stackoverflow.com")            .exchange();    clientResponse.subscribe((response) -> {        // here you can access headers and status code        Headers headers = response.headers();        HttpStatus stausCode = response.statusCode();        Mono<String> bodyToMono = response.bodyToMono(String.class);        // the second subscribe to access the body        bodyToMono.subscribe((body) -> {            // here you can access the body            System.out.println("body:" + body);            // and you can also access headers and status code if you need            System.out.println("headers:" + headers.asHttpHeaders());            System.out.println("stausCode:" + stausCode);        }, (ex) -> {            // handle error        });    }, (ex) -> {        // handle network error    });

I hope it helps.If someone knows a better way to do it, please let us know.

For status code you can try this:

Mono<HttpStatus> status = webClient.get()                .uri("/example")                .exchange()                .map(response -> response.statusCode());

For headers:

Mono<HttpHeaders> result = webClient.get()                .uri("/example")                .exchange()                .map(response -> response.headers().asHttpHeaders());