Log4J Integration for Embedded Jetty

Question

I am using an embedded jetty and log4j . In my project I have log4j.properties file for managing my logs. It looks like the following:

org.eclipse.jetty.util.log.Slf4jLog =DEBUG, consoleAppender

log4j.rootLogger=INFO, consoleAppender, fileAppender

The problem is that the first line, which should define jetty's log level does not work. Due to my rootlogger I get the message

INFO  org.eclipse.jetty.util.log  - Logging initialized @11716ms to org.eclipse.jetty.util.log.Slf4jLog

additionally, I tried:

log4j.category.org.eclipse.jetty.util.log.Slf4jLog

So jetty seems to detect slf4jlog and the root logging is working. Now I want to write a special log level for jetty. If I only put the first line to log4j.properties then I do not get any output. I also tried to prefix the firstline with log4j: log4j.org.eclipse.jetty.util.log.Slf4jLog =DEBUG, consoleAppender which is still not working.I simply do not get any output....

Answer 1

org.eclipse.jetty.util.log.Slf4jLog =DEBUG, consoleAppender

The class org.eclipse.jetty.util.log.Slf4jLog has no debug level logging events on that logger name. You will not see DEBUG level logging events on that logger name.

That's just a bridge class from Jetty logging facade to Slf4j logging facade (which then routes to your Log4J implementation).

Each instance of org.eclipse.jetty.util.log.Slf4jLog will have a specific declared logger name that those events will be emitted on.

Have you tried just....

log4j.category.org.eclipse.jetty=DEBUG, consoleAppender

That will put all loggers that start with org.eclipse.jetty into DEBUG level appending to your configured logger called consoleAppender