对于最新稳定版本，请使用Spring Framework 7.0.1！spring-doc.cadn.net.cn

retrieve（）

这retrieve（）可以用来声明如何提取响应。例如：spring-doc.cadn.net.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()

或者只拿尸体：spring-doc.cadn.net.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>()

要获得一串解码对象：spring-doc.cadn.net.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>()

默认情况下，4xx或5xx的响应会得到WebClientResponseException包括 用于特定HTTP状态码的子类。以定制错误处理方式 响应与使用onStatus训犬员如下：spring-doc.cadn.net.cn

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