[LOG4J2-2453] Missing dependency to log4j-slf4j18-impl in log4j-bom

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.11.1
• Fix Version/s: 2.11.2
• Component/s: SLF4J Bridge
• Assignee: Unassigned
• Reporter: Thorsten Heit
• Created: 24/Sep/18 14:52
• Updated: 24/Nov/18 06:33
• Resolved: 24/Nov/18 06:33

Description

According to https://logging.apache.org/log4j/2.x/log4j-slf4j-impl/index.html there are two SLF4J to Log4j adapters provided since release 2.11.1:

• log4j-slf4j-impl for SLF4J 1.7.x releases or older
• log4j-slf4j18-impl for SLF4J 1.8.x releases or newer

When I use the following snippet in my (corporate parent) pom.xml

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-bom</artifactId>
      <version>2.11.1</version>
      <scope>import</scope>
      <type>pom</type>
    </dependency>
  </dependencies>
</dependencyManagement>

I can omit the version numbers in my pom.xml for the Log4J components I'm using:

(...)
<dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-core</artifactId>
</dependency>

<dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-slf4j-impl</artifactId>
</dependency>

<dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-jul</artifactId>
</dependency>
(...)

This only works for the artifact log4j-slf4j-impl, but NOT for log4j-slf4j18-impl which isn't contained / managed in the BOM.

Issue Links

• links to: GitHub Pull Request #216
• links to: GitHub Pull Request #216