Spring Boot 2中如何使用Log4j2实现按API接口路径动态保存日志？

<Routing name="routing">
  <Routes pattern="${ctx:routingkey}">
    <Route>
      <RollingFile name="rolling-${ctx:routingkey}"
                   filename="./logs/${ctx:routingkey}/${date:yyyy-mm-dd}.log"
                   filePattern="./logs/${date:yyyy-mm}/${ctx:routingkey}-%d{yyyy-mm-dd}-%i.log.gz">
        <PatternLayout pattern="%d{iso8601} [%t] %p %c{3} - %m%n"/>
        <Policies>
          <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
          <SizeBasedTriggeringPolicy size="10MB"/>
        </Policies>
      </RollingFile>
    </Route>
  </Routes>
</Routing>

public class Log4j2Interceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String apiPath = request.getRequestURI();
        ThreadContext.put("ROUTINGKEY", apiPath);
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        ThreadContext.remove("ROUTINGKEY");
    }
}