初始化

xuekang

2024-05-10 806d4b0d8639b3b04c166cc60a69eb6f31d4e6aa

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package org.dromara.gateway.filter;
 
import org.dromara.gateway.utils.WebFluxUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.cloud.gateway.support.ServerWebExchangeUtils;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
 
/**
 * 全局缓存获取body请求数据（解决流不能重复读取问题）
 *
 * @author Lion Li
 */
@Component
public class GlobalCacheRequestFilter implements GlobalFilter, Ordered {
 
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        // 只缓存json类型请求
        if (!WebFluxUtils.isJsonRequest(exchange)) {
            return chain.filter(exchange);
        }
        return ServerWebExchangeUtils.cacheRequestBody(exchange, (serverHttpRequest) -> {
            if (serverHttpRequest == exchange.getRequest()) {
                return chain.filter(exchange);
            }
            return chain.filter(exchange.mutate().request(serverHttpRequest).build());
        });
    }
 
    @Override
    public int getOrder() {
        return Ordered.HIGHEST_PRECEDENCE + 1;
    }
}