[logback-user] Logback 1.3.0/1.4.0 : slf4j-api & StaticLoggerBinder

[Nigel L Jones]

Thanks,
I did try 1.3 with the same results. Mostly Jakarta, but some javax via transitive dependencies.

The server applications use spring (springboot 2.7.3/spring 5.3.22), so that may be the area to persue as spring introduces it’s own classloader and may cause problems with ServiceLoader?? –via the spring community so thanks for the pointer.

From: logback-user <logback-user-bounces at qos.ch> on behalf of Raymond Augé <raymond.auge at liferay.com>
Date: Thursday, 1 September 2022 at 14:15
To: logback users list <logback-user at qos.ch>
Subject: [EXTERNAL] Re: [logback-user] Logback 1.3.0/1.4.0 : slf4j-api & StaticLoggerBinder
Hi Nigel, You probably want logback 1. 3 (1. 4 is for Jakarta EE as opposed to 1. 3 being for Java EE). Secondly, logback now uses ServiceLoader to find "providers" so make sure any adjustments are made to your classloading such that
ZjQcmQRYFpfptBannerStart
This Message Is From an External Sender
This message came from outside your organization.
ZjQcmQRYFpfptBannerEnd
Hi Nigel,

You probably want logback 1.3 (1.4 is for Jakarta EE as opposed to 1.3 being for Java EE).

Secondly, logback now uses ServiceLoader to find "providers" so make sure any adjustments are made to your classloading such that that can work.

Cheers

On Thu, Sep 1, 2022 at 7:59 AM Nigel L Jones <jonesn at uk.ibm.com<mailto:jonesn at uk.ibm.com>> wrote:
Hi,
I’m a maintainer on the open source Egeria project https://github.com/odpi/egeria<https://github.com/odpi/egeria>.

 We typically use slf4j in our Java 11 code, and depend on slf4j-api. Then in any ‘applications’ (a client tool, or a server) we include an implementation for logging, such as logback – specifically logback-classic
We regularly update our dependencies and today I tried upgrading from logback 1.2.11 to 1.4.0. On doing so I see we now fail to startup, as slf4j is unable to find a logging implementation. Slf4j is at 2.0.0. We get an exception

Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder

Whilst this is an slf4j config issue in most regards, I wonder if the new logback version is not keeping slf4j happy with its implementation in some way

I opened up an issue in our own bug tracker at https://github.com/odpi/egeria/issues/6884<https://github.com/odpi/egeria/issues/6884> which has the dependency tree & stack trace in full.

Is there a change in the new version that’s caught us out? Any indications from the log? (If it is a logback issue happy to open up a bug report, but now knowing logback well figured I’d ask here first!)

Many thanks
Nigel Jones

Unless otherwise stated above:

IBM United Kingdom Limited
Registered in England and Wales with number 741598
Registered office: PO Box 41, North Harbour, Portsmouth, Hants. PO6 3AU
_______________________________________________
logback-user mailing list
logback-user at qos.ch<mailto:logback-user at qos.ch>
http://mailman.qos.ch/mailman/listinfo/logback-user<http://mailman.qos.ch/mailman/listinfo/logback-user>


--
Raymond Augé (@rotty3000)
Senior Software Architect Liferay, Inc. (@Liferay)
OSGi Fellow, Java Champion

Unless otherwise stated above:

IBM United Kingdom Limited
Registered in England and Wales with number 741598
Registered office: PO Box 41, North Harbour, Portsmouth, Hants. PO6 3AU
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qos.ch/pipermail/logback-user/attachments/20220901/670ebec9/attachment.html>