Project created from start.spring.io with "Distributed Tracing" entry misses traceId and spanId #48249
Description
The minimal project initialized via Spring Initializr
The minimal POM is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>4.0.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>25</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-micrometer-tracing</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-tracing-bridge-brave</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webmvc</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>When requesting the API, the console logs are as follows:
2025-11-23T10:42:08.308+08:00 INFO 11936 --- [demo] [nio-8080-exec-1] [ ] com.example.demo.TestController : this is Test API logs
You can see that the traceId and spanId fields in the logs are empty. The normal logs should look like this:
2025-11-23T10:51:25.065+08:00 INFO 84036 --- [demo] [nio-8080-exec-1] [3351199729a4c3b5fbf785e3b682a6d9-07e463799adb9133] com.example.demo.TestController : this is Test API logs