content: package org.jeecg.handler;
  
  import lombok.extern.slf4j.Slf4j;
  import org.springframework.http.HttpStatus;
  import org.springframework.http.MediaType;
  import org.springframework.stereotype.Component;
  import org.springframework.web.reactive.function.BodyInserters;
  import org.springframework.web.reactive.function.server.HandlerFunction;
  import org.springframework.web.reactive.function.server.ServerRequest;
  import org.springframework.web.reactive.function.server.ServerResponse;
  import reactor.core.publisher.Mono;
  
  import java.util.Optional;
  
  import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_ORIGINAL_REQUEST_URL_ATTR;
  
  /**
   * @author scott
   * @date 2020/05/26
   * Hystrix 降级处理
   */
  @Slf4j
  @Component
  public class HystrixFallbackHandler implements HandlerFunction<ServerResponse> {
      @Override
      public Mono<ServerResponse> handle(ServerRequest serverRequest) {
          Optional<Object> originalUris = serverRequest.attribute(GATEWAY_ORIGINAL_REQUEST_URL_ATTR);
  
          originalUris.ifPresent(originalUri -> log.error("网关执行请求:{}失败,hystrix服务降级处理", originalUri));
  
          return ServerResponse.status(HttpStatus.INTERNAL_SERVER_ERROR.value())
                  .header("Content-Type","text/plain; charset=utf-8").body(BodyInserters.fromObject("访问超时,请稍后再试"));
      }
  }
  