how to add TraceId to response header

[Classical1956]

List of plugins used:

The project needs to return traceId in the response header, for which I used OncePerRequestFilter to achieve.
However, after starting the project according to the plugin-list above, only TraceId=N/A can be obtained.
After reviewing the documentation and skywalking project, add tomcat-plugin to the plugin-list. Although the traceId can be obtained, it causes new problems, like this issue HTTP endpoints' module sometimes show as 'SpringMVC' but sometimes show as 'Tomcat Http'

What do I need to do to get the traceId?

[wu-sheng]

We gave youmanual API toreadtrace id. Then, youcould do the rest by yourself.

[Classical1956]

is this TraceContext.traceId() ?

[wu-sheng]

Yes. Manipulating response header is not an option in SkyWalking core, so, you need to do that.