TraceApplication.java

package com.didispace;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;

@RestController
@EnableDiscoveryClient
@SpringBootApplication
public class TraceApplication {

	private final Logger logger = LoggerFactory.getLogger(getClass());

	@RequestMapping(value = "/trace-2", method = RequestMethod.GET)
	public String trace(HttpServletRequest request) {
		logger.info("===<call trace-2, TraceId={}, SpanId={}>===",
				request.getHeader("X-B3-TraceId"), request.getHeader("X-B3-SpanId"));
		return "Trace";
	}

	public static void main(String[] args) {
		SpringApplication.run(TraceApplication.class, args);
	}

}