!194 update 使用 gateway 自带工具 优化缓存Request与body Merge pull request !194 from 疯...

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2022-06-13 8242cec9ac7dabce9bfbeedd334b914ab15f26bd

!194 update 使用 gateway 自带工具 优化缓存Request与body
Merge pull request !194 from 疯狂的狮子Li/N/A

 ruoyi-gateway/src/main/java/com/ruoyi/gateway/filter/CacheRequestFilter.java

@@ -6,6 +6,7 @@
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.OrderedGatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.cloud.gateway.support.ServerWebExchangeUtils;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DataBufferUtils;
@@ -58,26 +59,12 @@
            {
                return chain.filter(exchange);
            }
            return DataBufferUtils.join(exchange.getRequest().getBody()).map(dataBuffer -> {
                byte[] bytes = new byte[dataBuffer.readableByteCount()];
                dataBuffer.read(bytes);
                DataBufferUtils.release(dataBuffer);
                return bytes;
            }).defaultIfEmpty(new byte[0]).flatMap(bytes -> {
                DataBufferFactory dataBufferFactory = exchange.getResponse().bufferFactory();
                ServerHttpRequestDecorator decorator = new ServerHttpRequestDecorator(exchange.getRequest())
            return ServerWebExchangeUtils.cacheRequestBodyAndRequest(exchange, (serverHttpRequest) -> {
                if (serverHttpRequest == exchange.getRequest()) 
                {
                    @Override
                    public Flux<DataBuffer> getBody()
                    {
                        if (bytes.length > 0)
                        {
                            return Flux.just(dataBufferFactory.wrap(bytes));
                        }
                        return Flux.empty();
                    }
                };
                return chain.filter(exchange.mutate().request(decorator).build());
                    return chain.filter(exchange);
                }
                return chain.filter(exchange.mutate().request(serverHttpRequest).build());
            });
        }
    }