CODEWITHSUNDEEP
javalogginglog4j
Sebastien Diot
Sebastien Diot

Reputation: 7359

log4J2 to slf4j to log4j1 produces "No log4j2 configuration file found"

We have added libraries that use log4J 2.X, but we are still using log4J 1.X (mainly because we have our own impl of some Appenders and Loggers). I was told that the solution is to send log4J 2.X to slf4j (using log4j-to-slf4j, version 2.X), and then slf4j to log4J 1.X, using slf4j-log4j12, version 1.X.

This is what I have just done, but I still get this message:

ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'org.apache.logging.log4j.simplelog.StatusLogger.level' to TRACE to show Log4j2 internal initialization logging.

I was hoping that slf4j would use the "configuration" of log4J 1.X, and that log4J 2.X would use the "configuration" of slf4j, so I would not need to do anything except configure log4J 1.X, but it does not seem to be the case.

Do I now have to duplicate my log4J 1.X configuration for log4J 2.X, or is there some easy work-around for this issue? Could it be some kind of "ordering" problem (what runs before what)?

Upvotes: 0

Views: 732

Answers (1)

Nyamiou The Galeanthrope
Nyamiou The Galeanthrope

Reputation: 1214

You need to exclude the dependencies to log4j2, the classes that your libraries depends on will be provided by log4j-to-slf4j.

Upvotes: 1

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