I see in the Spring Boot documentation that,
Spring Boot uses Commons Logging for all internal logging...
However when I search for a (maven) dependency to Apache Commons Logging from Spring Boot artifacts I don't see any dependency references to it.
Does Spring Boot use a separate internal fork perhaps of Apache Commons Logging? or am I missing something?
I couldn't find much in this connection online. Does someone know & can help share pointers?
Below for example is the dependency tree for org.springframework.boot:spring-boot-starter-web:jar:2.7.0
[INFO] Scanning for projects...
[INFO]
[INFO] ------------< dcm.dev.util:maven-dependency-resolver-tool >-------------
[INFO] Building maven-dependency-resolver-tool 1.0
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:3.2.0:tree (default-cli) @ maven-dependency-resolver-tool ---
[INFO] dcm.dev.util:maven-dependency-resolver-tool:jar:1.0
[INFO] \- org.springframework.boot:spring-boot-starter-web:jar:2.7.0:compile
[INFO] +- org.springframework.boot:spring-boot-starter:jar:2.7.0:compile
[INFO] | +- org.springframework.boot:spring-boot:jar:2.7.0:compile
[INFO] | +- org.springframework.boot:spring-boot-autoconfigure:jar:2.7.0:compile
[INFO] | +- org.springframework.boot:spring-boot-starter-logging:jar:2.7.0:compile
[INFO] | | +- ch.qos.logback:logback-classic:jar:1.2.11:compile
[INFO] | | | +- ch.qos.logback:logback-core:jar:1.2.11:compile
[INFO] | | | \- org.slf4j:slf4j-api:jar:1.7.32:compile
[INFO] | | +- org.apache.logging.log4j:log4j-to-slf4j:jar:2.17.2:compile
[INFO] | | | \- org.apache.logging.log4j:log4j-api:jar:2.17.2:compile
[INFO] | | \- org.slf4j:jul-to-slf4j:jar:1.7.36:compile
[INFO] | +- jakarta.annotation:jakarta.annotation-api:jar:1.3.5:compile
[INFO] | +- org.springframework:spring-core:jar:5.3.20:compile
[INFO] | | \- org.springframework:spring-jcl:jar:5.3.20:compile
[INFO] | \- org.yaml:snakeyaml:jar:1.30:compile
[INFO] +- org.springframework.boot:spring-boot-starter-json:jar:2.7.0:compile
[INFO] | +- com.fasterxml.jackson.core:jackson-databind:jar:2.13.3:compile
[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.13.3:compile
[INFO] | | \- com.fasterxml.jackson.core:jackson-core:jar:2.13.3:compile
[INFO] | +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.13.3:compile
[INFO] | +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.13.3:compile
[INFO] | \- com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.13.3:compile
[INFO] +- org.springframework.boot:spring-boot-starter-tomcat:jar:2.7.0:compile
[INFO] | +- org.apache.tomcat.embed:tomcat-embed-core:jar:9.0.63:compile
[INFO] | +- org.apache.tomcat.embed:tomcat-embed-el:jar:9.0.63:compile
[INFO] | \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:9.0.63:compile
[INFO] +- org.springframework:spring-web:jar:5.3.20:compile
[INFO] | \- org.springframework:spring-beans:jar:5.3.20:compile
[INFO] \- org.springframework:spring-webmvc:jar:5.3.20:compile
[INFO] +- org.springframework:spring-aop:jar:5.3.20:compile
[INFO] +- org.springframework:spring-context:jar:5.3.20:compile
[INFO] \- org.springframework:spring-expression:jar:5.3.20:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:39 min
[INFO] Finished at: 2023-07-13T13:40:38-06:00
[INFO] ------------------------------------------------------------------------
Thanks