• Dependency the toolkit, such as using maven or gradle

   <dependency>
      <groupId>org.skywalking</groupId>
      <artifactId>apm-toolkit-trace-context</artifactId>
      <version>${skywalking.version}</version>
   </dependency>

   

• Use TraceContext.traceId() to retrieve the tracaId in any moment and anywhere.

import org.skywalking.apm.toolkit.trace.TraceContext;
...

modelAndView.addObject("traceId", TraceContext.traceId());

sample code only