项目中实现日志traceId

@Component
@Slf4j
public class LogInterceptor implements HandlerInterceptor {

    private static final String TRACE_ID = "traceId";

    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse
            , Object object)  {
        try {
            MDC.put(TRACE_ID, getMapping(httpServletRequest) + "-"
                    + uid(httpServletRequest) + "-"
                    + UUID.randomUUID().toString().replaceAll("-", "").substring(0, 16));
        } catch (Exception e) {
            log.warn("LogInterceptor preHandle fail, e: {}", e.toString());
        }

        return true;
    }

    private String getMapping(HttpServletRequest httpServletRequest) {
        try {
            String url = httpServletRequest.getRequestURL().toString();
            int index = url.indexOf(".com");
            if (index > 0){
                url = url.substring(index + 4);
            }else {
                index = url.indexOf("9092");
                if (index > 0){
                    url = url.substring(index + 4);
                }
            }
            return url.substring(1, url.length()).replaceAll("/", "-");
        } catch (Exception e) {
            log.warn("LogInterceptor getMapping fail, e: {}", e);
            return "";
        }
    }

    private String uid(HttpServletRequest httpServletRequest) {
        Long uid = null;
        try {
            uid = AuthInterceptor.getUid();
            if (null == uid) {
                String arg = httpServletRequest.getParameter("uid");
                if (StringUtils.isNotBlank(arg)) uid = Long.parseLong(arg);
            }
        } catch (Exception e) {
            log.warn("LogInterceptor getUid fail, e: {}", e.toString());
        }
        return uid == null ? "uid" : String.valueOf(uid);
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
                           Object object, ModelAndView modelAndView) {
        try {
            MDC.remove(TRACE_ID);
        } catch (Exception e) {
            log.warn("LogInterceptor postHandle MDC.remove(TRACE_ID) fail, e: {}", e.toString());
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
                                Object object, Exception e) throws Exception {
    }


}