WebFlux注解下读取ServerHttpRequest 请求报文流数据方法

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在WebFlux的注解模式下没有找到有用的直接从 ServerHttpRequest 读取请求报文流的方法，下面是我自己摸索出来的方法，主要借鉴了Spring Security的源码， 重点是需要注入 Webflux的解码器

 @Autowired
 private ServerCodecConfigurer serverCodecConfigurer = null;

然后在进行如下处理:

@PostMapping("/connect")
    public Mono<Void> connect(final ServerHttpRequest request, final ServerHttpResponse response) {
        log.debug("connect...");
        final ResolvableType reqDataType = ResolvableType.forClass(byte[].class);
        return response.writeWith(serverCodecConfigurer.getReaders().stream()
                .filter(reader -> reader.canRead(reqDataType, MediaType.ALL))
                .findFirst()
                .orElseThrow(() -> new IllegalStateException("No Data"))
                .readMono(reqDataType, request, Collections.emptyMap())
                .cast(byte[].class)
                .map(bytes -> {
                    try {
                        final String reqBody = new String(bytes, StandardCharsets.UTF_8);
                        log.info("reqBody => \n {}", reqBody);
			///TODO:  实现自己的业务

                        final NettyDataBufferFactory nettyDataBufferFactory = new NettyDataBufferFactory(new UnpooledByteBufAllocator(false));
                        return nettyDataBufferFactory.wrap("ok".getBytes(StandardCharsets.UTF_8));
                    } catch (Throwable ex) {
                        log.warn("connect-exp: {}", ex.getMessage());
                        return null;
                    }
                })
        );
    }

来源：oschina

链接：https://my.oschina.net/u/4316432/blog/3143334