[LOG4J2-2834] Log4j getCaller class is not found in Java 11

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.13.2
• Component/s: API

Environment

Java

Java JDK 11.0.7

IDE

Eclipse 2020-03 (4.15.0)

Windows

Windows 1903 18362.778

• Assignee: Unassigned
• Reporter: Jarno Gabriel
• Created: 28/Apr/20 07:29
• Updated: 12/Sep/22 22:32

Description

I can't seem to fix Log4j crashing when calling the `LogManager.getLogger()` method. I found [this|https://stackoverflow.com/questions/52953483/logmanager-getlogger-is-unable-to-determine-class-name-on-java-11] thread and I included the `Multi-Release` property in the manifest file but Log4J still crashes.

What I did was include Log4J in a library I wrote and then packaged that library using the maven shade plugin and then I included my packaged library in my actual application.

The error I'm getting:

Exception in thread "main" java.lang.UnsupportedOperationException: No class provided, and an appropriate one cannot be found.
at org.apache.logging.log4j.LogManager.callerClass(LogManager.java:576)    
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:601)    
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:588)

 

The shade configuration in my pom file for the library:

<plugin>    
    <groupId>org.apache.maven.plugins</groupId>    
    <artifactId>maven-shade-plugin</artifactId>    
    <version>3.2.3</version>
    <executions>    
        <execution>    
            <phase>package</phase>    
            <goals>    
                <goal>shade</goal>    
            </goals>    
            <configuration>    
                <filters>    
                    <filter>    
                        <artifact>:</artifact>    
                        <excludes>    
                            <exclude>META-INF/.SF</exclude>    
                            <exclude>META-INF/.DSA</exclude>    
                            <exclude>META-INF/*.RSA</exclude>    
                        </excludes>    
                    </filter>    
                </filters>    
                <transformers>    
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <manifestEntries>    
                            <Multi-Release>true</Multi-Release>    
                        </manifestEntries>    
                    </transformer>    
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                    </transformers>    
                <finalName>uber-${project.artifactId}-${project.version}</finalName>
            </configuration>    
        </execution>    
    </executions>    
</plugin>

 

The manifest file in the library .jar file:

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven 3.6.3
Build-Jdk: 11.0.7
Multi-Release: true

 

Issue Links

• is related to: LOG4J2-3593 StackLocator Reflection.getCallerClass warning is misleading / incorrect