在将响应发送到客户端之前注入全局响应标头

Question

@Component
public class RequestLoggingFilter implements GlobalFilter {
    Log log = LogFactory.getLog(getClass());

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        String originalUri = exchange.getRequest().getURI().toString();
        Route route = exchange.getAttribute(GATEWAY_ROUTE_ATTR);
        URI routeUri = exchange.getAttribute(GATEWAY_REQUEST_URL_ATTR);
        log.info("Incoming request " + originalUri + " is routed to id: " + route.getId()
                + ", uri:" + routeUri+" with id:"+ exchange.getRequest().getId());
        return chain.filter(exchange);
    }

请建议

Answer 1

        String id = exchange.getRequest().getId();
        exchange.getResponse().getHeaders().add("id",id);