SpringBoot+slf4j实现全链路调用日志跟踪的方法(一)

public class LogInterceptor implements HandlerInterceptor {

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		String tid = UUID.randomUUID().toString().replace("-", "");
		MDC.put(CloudConstant.MDC_TRACE, tid);
		return true;
	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
			@Nullable Exception ex) throws Exception {
		MDC.remove(CloudConstant.MDC_TRACE);
	}

}

@Configuration
public class WebInterceptorAdapter implements WebMvcConfigurer {
	@Bean
	public LogInterceptor logInterceptor() {
		return new LogInterceptor();
	}

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(logInterceptor());
	}
}

<pattern>%date %-5level ${PID:- } [%thread] [%X{tid}] : /*[%logger{50}:%line] %msg*/%n</pattern>

@RestController
@RequestMapping("trace")
@Slf4j
public class TestTraceController {

    @GetMapping("traceLog")
    public String traceLog() {
        log.info("---接口调用了---");
        traceService();
        return "success";
    }

    private void traceService(){
        log.error("## 执行traceService方法");
    }
}