eyipcm/hello-world

Step forward coding

Upgrade log4j2 replacing log4j info

• log4j2 maven version 2.17.0

	<dependency>
		<groupId>org.apache.logging.log4j</groupId>
		<artifactId>log4j-api</artifactId>
		<version>2.17.0</version>			
	</dependency>
	<dependency>
		<groupId>org.apache.logging.log4j</groupId>
		<artifactId>log4j-core</artifactId>
		<version>2.17.0</version>
	</dependency>	
	<dependency>
		<groupId>org.apache.logging.log4j</groupId>
		<artifactId>log4j-1.2-api</artifactId>
		<version>2.17.0</version>
	</dependency>

• Maven check dependencies

 mvn dependency:tree
 
[INFO] Scanning for projects...
[INFO] 
[INFO] ----------------------< hello-world:hello-world >-----------------------
[INFO] Building hello-world 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ hello-world ---
[INFO] hello-world:hello-world:jar:0.0.1-SNAPSHOT
[INFO] +- org.apache.logging.log4j:log4j-api:jar:2.17.0:compile
[INFO] +- org.apache.logging.log4j:log4j-core:jar:2.17.0:compile
[INFO] +- org.apache.logging.log4j:log4j-1.2-api:jar:2.17.0:compile
[INFO] +- org.apache.logging.log4j:log4j-slf4j-impl:jar:2.17.0:compile
[INFO] |  \- org.slf4j:slf4j-api:jar:1.7.25:compile
[INFO] +- commons-logging:commons-logging:jar:1.2:compile
[INFO] +- org.apache.logging.log4j:log4j-jcl:jar:2.17.0:compile
[INFO] \- org.apache.logging.log4j:log4j-jul:jar:2.17.0:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.161 s
[INFO] Finished at: 2021-12-19T07:21:33+08:00
[INFO] ------------------------------------------------------------------------

• Exclude conflicting dependencies

  log4j Dependency	Dependencies to Exclude1	Exclude2	Exclude3
  log4j-1.2-api	log4j:log4j	org.slf4j:log4j-over-slf4j
  log4j-core	log4j:log4j	ch.qos.logback:logback-core	org.apache.logging.log4j:log4j-to-slf4j
  log4j-jcl	org.slf4j:jcl-over-slf4j
  log4j-jul	org.slf4j:jul-to-slf4j
  log4j-slf4j-impl	org.apache.logging.log4j:log4j-to-slf4j	ch.qos.logback:logback-core

• Reference

log4j2 FAQ

log4j2 VS jul LOG level

slf4j manual

java-util-logging Level.FINE no show