Spring Boot logging with Log4j2 - spring

Question

Written simple POC to prove and test Spring Boot and log4j2 compatibility. Once successful I will move it to real application.
Please refer my POC source code:
https://github.com/Dennyss/SpringBootLog4j2POC
I know/read about Spring version and log4j2 compatibility from:
How to set up Spring Boot and log4j2 properly?
Found and tried recommendations described here:
Spring-Boot logging with log4j2?
But still not working. The problem is that both application logs and Spring logs are printing to console only.
Please refer maven dependencies below (from POC):
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.6.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.6.2</version>
</dependency>
</dependencies>
If I don't exclude Spring's logback and don't add boot-starter-log4j2 then application logs are printing to application file but Spring logs are not printing at all. I feel the problem somewhere with dependencies. Appreciate any help.

Answer 1

According to the Spring Boot Logging documentation, the location of the logging configuration file can be specified using the logging.config property. I noticed that your start.sh script is passing -Dlog4j.configurationFile. Normally, this would be sufficient for direct Log4J 2 integration, but Spring Boot uses logging.config.
After switching to this, it writes to the log files:
java -Dlogging.config=/share/LogPOC/log4j2.xml -cp poc.jar:libs/* com.poc.logger.Application