The retrieve() method can be used to declare how to extract the response. For example:spring-doc.cn

WebClient client = WebClient.create("https://example.org");

Mono<ResponseEntity<Person>> result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.toEntity(Person.class);
val client = WebClient.create("https://example.org")

val result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.toEntity<Person>().awaitSingle()

Or to get only the body:spring-doc.cn

WebClient client = WebClient.create("https://example.org");

Mono<Person> result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.bodyToMono(Person.class);
val client = WebClient.create("https://example.org")

val result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.awaitBody<Person>()

To get a stream of decoded objects:spring-doc.cn

Flux<Quote> result = client.get()
		.uri("/quotes").accept(MediaType.TEXT_EVENT_STREAM)
		.retrieve()
		.bodyToFlux(Quote.class);
val result = client.get()
		.uri("/quotes").accept(MediaType.TEXT_EVENT_STREAM)
		.retrieve()
		.bodyToFlow<Quote>()

By default, 4xx or 5xx responses result in an WebClientResponseException, including sub-classes for specific HTTP status codes. To customize the handling of error responses, use onStatus handlers as follows:spring-doc.cn

Mono<Person> result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.onStatus(HttpStatusCode::is4xxClientError, response -> ...)
		.onStatus(HttpStatusCode::is5xxServerError, response -> ...)
		.bodyToMono(Person.class);
val result = client.get()
		.uri("/persons/{id}", id).accept(MediaType.APPLICATION_JSON)
		.retrieve()
		.onStatus(HttpStatusCode::is4xxClientError) { ... }
		.onStatus(HttpStatusCode::is5xxServerError) { ... }
		.awaitBody<Person>()