List of usage examples for org.springframework.core.codec Decoder decode
@SuppressWarnings("ConstantConditions") default T decode(DataBuffer buffer, ResolvableType targetType, @Nullable MimeType mimeType, @Nullable Map<String, Object> hints) throws DecodingException
From source file:org.springframework.messaging.handler.annotation.reactive.PayloadMethodArgumentResolver.java
private Mono<Object> decodeContent(MethodParameter parameter, Message<?> message, boolean isContentRequired, Flux<DataBuffer> content, MimeType mimeType) { ResolvableType targetType = ResolvableType.forMethodParameter(parameter); Class<?> resolvedType = targetType.resolve(); ReactiveAdapter adapter = (resolvedType != null ? getAdapterRegistry().getAdapter(resolvedType) : null); ResolvableType elementType = (adapter != null ? targetType.getGeneric() : targetType); isContentRequired = isContentRequired || (adapter != null && !adapter.supportsEmpty()); Consumer<Object> validator = getValidator(message, parameter); Map<String, Object> hints = Collections.emptyMap(); for (Decoder<?> decoder : this.decoders) { if (decoder.canDecode(elementType, mimeType)) { if (adapter != null && adapter.isMultiValue()) { Flux<?> flux = content.map(buffer -> decoder.decode(buffer, elementType, mimeType, hints)) .onErrorResume(ex -> Flux.error(handleReadError(parameter, message, ex))); if (isContentRequired) { flux = flux.switchIfEmpty(Flux.error(() -> handleMissingBody(parameter, message))); }/* www . j a v a 2 s . c o m*/ if (validator != null) { flux = flux.doOnNext(validator); } return Mono.just(adapter.fromPublisher(flux)); } else { // Single-value (with or without reactive type wrapper) Mono<?> mono = content.next() .map(buffer -> decoder.decode(buffer, elementType, mimeType, hints)) .onErrorResume(ex -> Mono.error(handleReadError(parameter, message, ex))); if (isContentRequired) { mono = mono.switchIfEmpty(Mono.error(() -> handleMissingBody(parameter, message))); } if (validator != null) { mono = mono.doOnNext(validator); } return (adapter != null ? Mono.just(adapter.fromPublisher(mono)) : Mono.from(mono)); } } } return Mono.error(new MethodArgumentResolutionException(message, parameter, "Cannot decode to [" + targetType + "]" + message)); }
From source file:org.springframework.messaging.handler.annotation.support.reactive.PayloadMethodArgumentResolver.java
private Mono<Object> decodeContent(MethodParameter parameter, Message<?> message, boolean isContentRequired, Flux<DataBuffer> content, MimeType mimeType) { ResolvableType targetType = ResolvableType.forMethodParameter(parameter); Class<?> resolvedType = targetType.resolve(); ReactiveAdapter adapter = (resolvedType != null ? getAdapterRegistry().getAdapter(resolvedType) : null); ResolvableType elementType = (adapter != null ? targetType.getGeneric() : targetType); isContentRequired = isContentRequired || (adapter != null && !adapter.supportsEmpty()); Consumer<Object> validator = getValidator(message, parameter); Map<String, Object> hints = Collections.emptyMap(); for (Decoder<?> decoder : this.decoders) { if (decoder.canDecode(elementType, mimeType)) { if (adapter != null && adapter.isMultiValue()) { Flux<?> flux = content .concatMap(buffer -> decoder.decode(Mono.just(buffer), elementType, mimeType, hints)) .onErrorResume(ex -> Flux.error(handleReadError(parameter, message, ex))); if (isContentRequired) { flux = flux.switchIfEmpty(Flux.error(() -> handleMissingBody(parameter, message))); }/* w ww . j av a2s . co m*/ if (validator != null) { flux = flux.doOnNext(validator::accept); } return Mono.just(adapter.fromPublisher(flux)); } else { // Single-value (with or without reactive type wrapper) Mono<?> mono = decoder.decodeToMono(content.next(), targetType, mimeType, hints) .onErrorResume(ex -> Mono.error(handleReadError(parameter, message, ex))); if (isContentRequired) { mono = mono.switchIfEmpty(Mono.error(() -> handleMissingBody(parameter, message))); } if (validator != null) { mono = mono.doOnNext(validator::accept); } return (adapter != null ? Mono.just(adapter.fromPublisher(mono)) : Mono.from(mono)); } } } return Mono.error(new MethodArgumentResolutionException(message, parameter, "Cannot decode to [" + targetType + "]" + message)); }