Spring Sleuth 跟踪 ID 在 Spring Cloud Gateway 中消失了

Question

我有一个非常简单的 spring cloud gateway 应用程序(没有自定义，直接从 start.spring.io 下载，只需选择 gateway 和 sleuth)。要启用访问日志，我必须设置系统属性 reactor.netty.http.server.accessLogEnabled:

@SpringBootApplication
class Application

fun main(args: Array<String>) {
    System.setProperty(ReactorNetty.ACCESS_LOG_ENABLED, "true")
    runApplication<Application>(*args)
}

一切正常:

...
2021-12-27 17:19:05.245  INFO [gateway,,] 62156 --- [           main] o.s.b.web.embedded.netty.NettyWebServer  : Netty started on port 8080
2021-12-27 17:19:05.284  INFO [gateway,,] 62156 --- [           main] com.example.demo.ApplicationKt           : Started ApplicationKt in 1.855 seconds (JVM running for 2.262)
2021-12-27 17:19:09.914  INFO [gateway,e075b59a8a4bca5d,e075b59a8a4bca5d] 62156 --- [ctor-http-nio-2] reactor.netty.http.server.AccessLog      : 127.0.0.1 - - [27/Dec/2021:17:19:09 +0100] "GET /get HTTP/1.1" 404 132 111

现在，当我向应用程序添加路由时:

@SpringBootApplication
class Application

fun main(args: Array<String>) {
    System.setProperty(ReactorNetty.ACCESS_LOG_ENABLED, "true")
    runApplication<Application>(*args) {
        addInitializers(
            beans {
                bean {
                    ref<RouteLocatorBuilder>().routes {
                        route {
                            path("/*")
                            uri("https://httpbin.org")
                        }
                    }
                }
            }
        )
    }
}

追踪信息不见了:

2021-12-27 17:23:48.010  INFO [gateway,,] 62423 --- [           main] o.s.b.web.embedded.netty.NettyWebServer  : Netty started on port 8080
2021-12-27 17:23:48.042  INFO [gateway,,] 62423 --- [           main] com.example.demo.ApplicationKt           : Started ApplicationKt in 1.774 seconds (JVM running for 2.145)
2021-12-27 17:24:21.864  INFO [gateway,,] 62423 --- [ctor-http-nio-2] reactor.netty.http.server.AccessLog      : 127.0.0.1 - - [27/Dec/2021:17:24:20 +0100] "GET /get HTTP/1.1" 200 613 949

它也发生在 application.xml 中定义的路由。
我错过了什么？配置路由时需要做些什么吗？

Answer 1

他们对 spring boot 2.4 做了一些改动。在此处查看发行说明 - https://github.com/spring-cloud/spring-cloud-sleuth/wiki/Spring-Cloud-Sleuth-3.0-Migration-Guide#spring-cloud-gateway-manual-reactor-tracing-instrumentation