Payara micro to log with slf4j and log4j2

Myron Tuang

unread,

Mar 22, 2017, 6:41:40 AM3/22/17

to Payara Forum

Hi,

Can i change Payara micro default logging to use with slf4j and log4j2?

Thanks,

~myron

Harry Chan

unread,

Mar 22, 2017, 10:04:21 AM3/22/17

to Payara Forum

Definitely yes, this is the example of using logback(change it to log4j2 yourself) with slf4j

<dependencies>
    <!-- logger -->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>${logback.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jcl-over-slf4j</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>log4j-over-slf4j</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jul-to-slf4j</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
...
</dependencies>

Myron Tuang

unread,

Mar 22, 2017, 12:05:43 PM3/22/17

to Payara Forum

Hi,

I know that you can do that with payara server with the following instruction:

http://www.c2b2.co.uk/middleware-blog/alternative-logging-frameworks-for-application-servers-glassfish.php

My question is can you do similar configuration with payara micro.

Thanks,

~myron

Harry Chan

unread,

Mar 24, 2017, 11:59:22 AM3/24/17

to Payara Forum

Hi Myron,

I am sorry that I got you wrongly and I can't find any related document too.

However, I still could achieve it using my way, please check it on https://github.com/hei1233212000/payara-micro-log4j2

Thank you.

Best Regards,

Harry Chan

Myron Tuang

unread,

Mar 30, 2017, 12:17:54 PM3/30/17

to Payara Forum

Hi Harry,

1. I downloaded from link you provided and build the package as shown the the jpeg with the target directory:

Run as suggested and it worked.

2. I then removed unnecessary files and directories as shown in the jpeg with target1 directory leaving the libs directory intact:

Run as suggested and it worked!

3. I then removed the libs directory under the payara-micro directory as shown in the jpeg with target2 directory:

It throws the following exceptions:

Can't load log handler "org.slf4j.bridge.SLF4JBridgeHandler"

java.lang.ClassNotFoundException: org.slf4j.bridge.SLF4JBridgeHandler

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

at java.util.logging.LogManager$5.run(LogManager.java:965)

at java.security.AccessController.doPrivileged(Native Method)

at java.util.logging.LogManager.loadLoggerHandlers(LogManager.java:958)

at java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:1578)

at java.util.logging.LogManager.access$1500(LogManager.java:145)

at java.util.logging.LogManager$RootLogger.accessCheckedHandlers(LogManager.java:1667)

at java.util.logging.Logger.getHandlers(Logger.java:1777)

at java.util.logging.Logger.log(Logger.java:735)

at java.util.logging.Logger.doLog(Logger.java:765)

at java.util.logging.Logger.log(Logger.java:788)

at java.util.logging.Logger.info(Logger.java:1490)

at fish.payara.micro.boot.runtime.PayaraMicroRuntimeBuilder.build(PayaraMicroRuntimeBuilder.java:63)

at org.glassfish.embeddable.GlassFishRuntime._bootstrap(GlassFishRuntime.java:157)

at org.glassfish.embeddable.GlassFishRuntime.bootstrap(GlassFishRuntime.java:110)

at fish.payara.micro.impl.PayaraMicroImpl.bootStrap(PayaraMicroImpl.java:976)

at fish.payara.micro.impl.PayaraMicroImpl.main(PayaraMicroImpl.java:201)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at fish.payara.micro.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)

at fish.payara.micro.boot.loader.Launcher.launch(Launcher.java:107)

at fish.payara.micro.boot.loader.Launcher.launch(Launcher.java:70)

at fish.payara.micro.boot.PayaraMicroLauncher.main(PayaraMicroLauncher.java:72)

at fish.payara.micro.PayaraMicro.main(PayaraMicro.java:358)

4. Next I moved the payara-micro.jar to the upper directory as shown in the jpeg with target3 directory:

It throws the same exceptions: