Questions tagged [logback]

Modern logging facility for Java-based programs with many new features when compared to Log4J and java.util.logging.

Logback is intended as a successor to the popular log4j project. It was designed by Ceki Gülcü, log4j's founder. It builds upon a decade of experience gained in designing industrial-strength logging systems. The resulting product logback is faster and has a smaller footprint than all existing logging systems, sometimes by a wide margin. Logback also offers unique and rather useful features such as Markers, parameterized logging statements, conditional stack tracing and powerful event filtering. These are only a few examples of the useful features logback has to offer.

For its own error reporting, Logback relies on Status objects, which greatly facilitate troubleshooting. You may wish to rely on Status objects in contexts other than logging. Logback-core bundles Joran, a powerful and generic configuration system, which can be put to use in your own projects to great effect.

Useful links

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Getting "ArrayIndexOutOfBoundsException: null" with NO stack trace

In our log files we find the following: [2012-09-24 00:09:32.590 +0000UTC] ERROR host server1 [] [] somepackage.someclass [] [Unknown] [V3rAqPaDvvAAAAExEXhdWGyh] [pjsQwTGHzxcAAAE5j4YdGvWV] "ThreadName" Some error happened: …
Christoph
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Configuring logback to suppress logging from all classes inside a package

I have this perfectly working logback.xml for console which logs all the debug level statements.
San
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Logback configuration via jvm argument

How can we load logback.xml via jvm argument if this is not present in project classpath? I'm using -Dlogback.configuration=file:C:\logbacs\logback.xml but this is not working.
Sai prateek
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How to change logback log level programmatically in Java?

I have some performance unit tests that create an unreasonable amount of logs that I don't really care for and are actually impacting performance. Can I somehow raise the log level in logback in the Before method for that unit test only (and restore…
naumcho
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Is there a Logback Layout that Creates JSON Objects with Message Parameters as Attributes?

I want to send log events to Loggly as JSON objects with parameterized string messages. Our project currently has a lot of code that looks like this: String someParameter = "1234"; logger.log("This is a log message with a parameter {}",…
MusikPolice
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Centralised Java Logging

I'm looking for a way to centralise the logging concerns of distributed software (written in Java) which would be quite easy, since the system in question has only one server. But keeping in mind, that it is very likely that more instances of the…
Sebastian van Wickern
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Logback native VS Logback via SLF4J

I have gone through the following article regarding the logging frameworks available for Java: http://michaelandrews.typepad.com/the_technical_times/2011/04/java-logging-reconsidered.html The author has mentioned using SLF4J with Logback. How is…
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Spring boot does not load logback-spring.xml

I have a sample Spring Boot application that uses Logback for logging. So I have logback-spring.xml next to the jar to configure the logging, however it does not work unless I specify it with logging.config, ex :…
Tamerlane
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how to define logback variables/properties before logback auto-load logback.xml?

My company has an environment management tool that enables you to look up properties from the environment programmatically in Java. I want to leverage this tool to configure logback. For example, suppose I have a logback.xml as follows (the file…
JBT
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Where to put logback.xml in Tomcat?

Where to put the logback.xml file in Tomcat when we want to have it configurable? And how to make it accessible for the Java application(s) running inside?
Harold L. Brown
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SLF4J - Logback: How to configure loggers in runtime?

we are using LogBack with our project, I want to configure logger according to some Data Base values, i.e If some DB value is set to true, then logger should use both file and DB appenders, if it's false so logger must use only DB appender, I also…
Amr Faisal
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Which takes priority: logback.xml or logback-test.xml?

I am very new to logback. If my spring boot project contains both the files - logback.xml: present under *src/main/resources/ logback-test.xml: present under *src/test/resources/ Which one will load? logback.xml or logback-test.xml? I was reading…
Saurabh Deshpande
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Akka SLF4J logback configuration and usage

I have done the following steps to try and configure logging for my akka application: created an application.conf file and placed it in src/main/resources. It looks like: akka { event-handlers = ["akka.event.slf4j.Slf4jEventHandler"]…
Apple Pie
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Why is Logback the default logging framework in Spring Boot?

I've tried to search on Spring documentation + articles on the internet + questions from Stackoverflow but I didn't find any information about it. For me the configuration of Log4J2 (especially the pattern) is much simpler, personal taste. Also, I…
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Do we need clear MDC after HTTP request in Spring

According to this answer thread local variable when we use thread local we should clear all variable in thread pool environment. So basically I just want to confirm that when we are using MDC (Mapped diagnostic context) we also should clear MDC to…
Łukasz Woźniczka
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