package com.newfiber.gateway.filter; import java.util.Collections; import java.util.List; import org.springframework.cloud.gateway.filter.GatewayFilter; 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.http.HttpMethod; import org.springframework.stereotype.Component; import org.springframework.web.server.ServerWebExchange; import reactor.core.publisher.Mono; /** * 获取body请求数据(解决流不能重复读取问题) * * @author newfiber */ @Component public class CacheRequestFilter extends AbstractGatewayFilterFactory<CacheRequestFilter.Config>{ public CacheRequestFilter(){ super(Config.class); } @Override public String name(){ return "CacheRequestFilter"; } @Override public GatewayFilter apply(Config config){ CacheRequestGatewayFilter cacheRequestGatewayFilter = new CacheRequestGatewayFilter(); Integer order = config.getOrder(); if (order == null){ return cacheRequestGatewayFilter; } return new OrderedGatewayFilter(cacheRequestGatewayFilter, order); } public static class CacheRequestGatewayFilter implements GatewayFilter{ @Override public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain){ // GET DELETE 不过滤 HttpMethod method = exchange.getRequest().getMethod(); if (method == null || method == HttpMethod.GET || method == HttpMethod.DELETE){ return chain.filter(exchange); } return ServerWebExchangeUtils.cacheRequestBodyAndRequest(exchange, (serverHttpRequest) -> { if (serverHttpRequest == exchange.getRequest()){ return chain.filter(exchange); } return chain.filter(exchange.mutate().request(serverHttpRequest).build()); }); } } @Override public List<String> shortcutFieldOrder(){ return Collections.singletonList("order"); } static class Config{ private Integer order; public Integer getOrder(){ return order; } public void setOrder(Integer order){ this.order = order; } } }