Arend v. Reinersdorff created LOG4J2-2037:
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Summary: Include SLF4J in log4j-bom
Key: LOG4J2-2037
URL: https://issues.apache.org/jira/browse/LOG4J2-2037
Project: Log4j 2
Issue Type: Improvement
Affects Versions: 2.9.0
Environment: Maven
Reporter: Arend v. Reinersdorff
Currently log4j-bom only includes Log4j 2 dependencies. It would be nice
log4j-bom would also include an slf4j-api dependency (and maybe other optional
dependencies).
Currently when using Log4j 2 as a backend for SLF4J the Maven dependency
management would look like this:
{code:xml}
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version> <!-- Must match dependency version of
log4j-bom -->
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-bom</artifactId>
<version>2.9.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
{code}
If log4j-bom would specify a dependency for slf4j-api:
* Dependency management entry for slf4j-api would no longer be needed
* Keeping the dependency versions of Log4j 2 and SLF4J in sync would much
easier. When the dependency version of log4j-bom is increased, it would
automatically set the dependency version of slf4j-api.
As an example see [spring-boot-dependencies |
http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.springframework.boot%22%20AND%20a%3A%22spring-boot-dependencies%22]
BOM which conveniently specifies many optional Spring Boot dependencies.
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