(1) 请遵循参考配置 https://github.com/spring-cloud-samples/sleuth-documentation-apps/blob/main/service1/src/main/resources/logback-spring.xml
https://docs.spring.io/spring-cloud-sleuth/docs/2.2.x-SNAPSHOT/reference/html/#json-logback-with-logstash
(2)
logging.pattern.level=%5p[${spring.zipkin.service.name:${spring.application.name:-}},%X{X-B3-TraceId:-},%X{X-B3-SpanId:-},%X{X-Span-Export:-}]
https://docs.spring.io/spring-cloud-sleuth/docs/2.2.x-SNAPSHOT/reference/html/#features