Hi,

I am using jetty 9 to launch my app, and it do reflection on libs to find extensions, providers, and so on...

When I launch my app, I have this error :
java.lang.RuntimeException: Error scanning entry META-INF/versions/9/org/apache/logging/log4j/util/ProcessIdUtil.class from jar file:/home/damien/projets/myapp/server/build/serverBaseDir_jetty9/webapps-exploded/localsite-api-server/webapp/WEB-INF/lib/log4j-api-2.9.1.jar
        at org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:913) ~[jetty-annotations-9.2.22.v20170606.jar:9.2.22.v20170606]
        ... 6 common frames omitted
Caused by: java.lang.IllegalArgumentException: null
        at org.objectweb.asm.ClassReader.<init>(Unknown Source) ~[asm-5.0.3.jar:5.0.3]
        at org.objectweb.asm.ClassReader.<init>(Unknown Source) ~[asm-5.0.3.jar:5.0.3]
        at org.objectweb.asm.ClassReader.<init>(Unknown Source) ~[asm-5.0.3.jar:5.0.3]
        at org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:973) ~[jetty-annotations-9.2.22.v20170606.jar:9.2.22.v20170606]
        at org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956) ~[jetty-annotations-9.2.22.v20170606.jar:9.2.22.v20170606]
        at org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909) ~[jetty-annotations-9.2.22.v20170606.jar:9.2.22.v20170606]
        ... 6 common frames omitted

By replacing log4j 2 with a slf4j bridge, this would fix my problem. Is there any other solution to fix my problem ?

Thanks.

2018-01-10 12:21 GMT+11:00 Remko Popma <remko.popma@gmail.com>:
Hi Damien,

You can’t use the log4j-over-slf4j adapter (it only works with Log4j 1.2). 

Log4j2 includes an slf4j adapter: the log4j-slf4j-impl module. See https://logging.apache.org/log4j/2.x/log4j-to-slf4j/index.html

Remko

(Shameless plug) Every java main() method deserves http://picocli.info



On Wed, Jan 10, 2018 at 10:13 Damien <maitredede@gmail.com> wrote:
Hi :),

I am using a lib that uses log4j 2 (apache.logging.log4j.*).

My build script (graddle) has easily replaced log4j 1 libs with log4j-over-slf4j, but does not handle log4j 2.

Is there a version for log4j 2 ? Or is someone working on it ?

Thanks :)

Damien
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