[GitHub] [skywalking] ldy opened a new issue #5906: Spring cloud gateway project logback cannot print TraceID

[GitBox]

ldy opened a new issue #5906:
URL: https://github.com/apache/skywalking/issues/5906


   ### Question
   below is my project lib version：
   SpringBoot：2.1.4.RELEASE，Spring Cloud 
Gateway：2.1.2，apm-toolkit-logback-1.x：6.5.0，Skywalking：8.2.0
   
   In gateway service，i can print the tid in my code when i use ```String 
traceId = TraceContext.traceId();```,but logback cannot print tid,only show 
```[TID:N/A]```.
   In other service，logback can also print tid normal.
   what can i do to let logback to print tid normal in gateway service?
   
   
![QQ图片20201126205646](https://user-images.githubusercontent.com/12880699/100354846-beef1a80-302b-11eb-9e42-7fba24e2bf55.jpg)
   
   
   


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