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Add BodyToMono and BodyToFlux overrides that receive ParameterizedTypeReference [SPR-15725] #20281

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spring-issuemaster opened this issue Jul 1, 2017 · 1 comment

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commented Jul 1, 2017

Doron Gold opened SPR-15725 and commented

Sometimes the body of responses from WebClient should map to a type with generics.
Currently the bodyToMono, BodyToFlux and toEntity methods on ClientResponse and on ResponseSpec only receive Class<T> bodyType.
This does not allow for extracting bodies of a type that has generics.

Since the class BodyExtractors already has a static method: public static <T> BodyExtractor<Mono<T>, ReactiveHttpInputMessage> toMono(ParameterizedTypeReference<T> typeReference)
It seems like all there is left to do is to add bodyToMono, BodyToFlux and toEntity overrides that utilize that factory method (and the similar toFlux factory method)

Code that uses the suggested functionality would look like the following:

Mono<Page<ExampleDto>> singlePageOfExamples = webClient.get()
                .uri("http://spring.io/example?page=0")
                .retrieve()
                .bodyToMono(new ParameterizedTypeReference<Page<ExampleDto>>() {});

singlePageOfExamples = webClient.get()
                .uri("http://spring.io/example?page=1")
                .retrieve()
                .toEntity(new ParameterizedTypeReference<Page<ExampleDto>>() {})
                .map(responseEntity -> responseEntity.getBody())

singlePageOfExamples = webClient.get()
                .uri("http://spring.io/example?page=2")
                .exchange()
                .flatMap(clientResponse -> clientResponse.bodyToMono(new ParameterizedTypeReference<Page<ExampleDto>>() {}));

Affects: 5.0 RC2

1 votes, 2 watchers

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commented Jul 14, 2017

Arjen Poutsma commented

Fixed in 805b715

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