[GitHub] [skywalking] woshishitou removed a comment on issue #6900: SpringcloudGateway can't get traceId

[GitBox <gi...@apache.org>]

woshishitou removed a comment on issue #6900:
URL: https://github.com/apache/skywalking/issues/6900#issuecomment-833424090


   `package com.example.gatewaydemo.filter;
   
   import org.apache.skywalking.apm.toolkit.trace.TraceContext;
   import org.springframework.cloud.gateway.filter.GatewayFilterChain;
   import org.springframework.cloud.gateway.filter.GlobalFilter;
   import org.springframework.context.annotation.Bean;
   import org.springframework.context.annotation.Configuration;
   import org.springframework.core.Ordered;
   import org.springframework.web.server.ServerWebExchange;
   import reactor.core.publisher.Mono;
   
   @Configuration
   public class FilterConfig {
   
       @Bean
       public GlobalFilter b() {
           return new BFilter();
       }
   
       public class BFilter implements GlobalFilter, Ordered {
   
           @Override
           public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
   			// 这里获取到的traceId是N/A
               exchange.getResponse().getHeaders().set("tid", TraceContext.traceId());
               return chain.filter(exchange).then(Mono.fromRunnable(() ->
               {
   				// 这里获取到的也是N/A
                   String traceId2 = TraceContext.traceId();
                   System.out.println("traceId:" + traceId2);
               }));
           }
   
           @Override
           public int getOrder() {
               return 1;
           }
       }
   
   }
   `


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