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Posted to notifications@logging.apache.org by "Ralph Goers (Jira)" <ji...@apache.org> on 2020/02/22 21:18:00 UTC
[jira] [Updated] (LOG4J2-2463) ClassNotFoundException when log4j2
is used with slf4j on module path in java 11
[ https://issues.apache.org/jira/browse/LOG4J2-2463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ralph Goers updated LOG4J2-2463:
--------------------------------
Labels: 3.0 (was: )
> ClassNotFoundException when log4j2 is used with slf4j on module path in java 11
> -------------------------------------------------------------------------------
>
> Key: LOG4J2-2463
> URL: https://issues.apache.org/jira/browse/LOG4J2-2463
> Project: Log4j 2
> Issue Type: Bug
> Affects Versions: 2.11.0
> Reporter: Pavel_K
> Assignee: Ralph Goers
> Priority: Major
> Labels: 3.0
> Attachments: log4j-slf4j-jdk11.zip
>
>
> In order to use log4j2 with slf4j I use the following jars on my module path:
> {code:java}
> slf4j-api-1.7.25.jar
> log4j-slf4j-impl-2.11.0.jar
> log4j-core-2.11.0.jar
> log4j-api-2.11.0.jar
> {code}
> However, I get
> {code:java}
> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/spi/AbstractLoggerAdapter
> at java.base/java.lang.ClassLoader.defineClass1(Native Method)
> at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
> at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1095)
> at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
> at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:760)
> at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:681)
> at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:606)
> at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580)
> at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
> at org.apache.logging.log4j.slf4j.impl@2.11.0/org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:36)
> at slf4j.api@1.7.25/org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
> at slf4j.api@1.7.25/org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
> at slf4j.api@1.7.25/org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
> at slf4j.api@1.7.25/org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
> at slf4j.api@1.7.25/org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
> at com.noname.alpha.core/com.noname.alpha.core.internal.Launcher.<clinit>(Launcher.java:38)
> Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.spi.AbstractLoggerAdapter
> at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
> at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
> ... 17 more
> {code}
> The problem is solved when I delete log4j-api-2.11.0.jar/META-INF/versions/9/module-info.class file
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