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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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Logback: modify message via filter?

It it possible to modify a log event after matching a filter? I've got an web container (Jersey) that logs uncaught exceptions at the ERROR level. But, for certain exceptions (EofException) throw by the server (Jetty), I'd like to log them at a…
David B.
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Logback file appender doesn't flush immediately

For some circumstances I need to force flushing in logback's file appender immediately. I've found in docs this option is enabled by default. Mysteriously this doesn't work. As I see in the sources underlying process involves BufferedOutputSream…
Viktor Stolbin
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Resolve multiple SLF4J bindings in maven project

This is a question sounds like bunch of similar questions on SE sites, so I should be quite verbose to make my question clear. So, here is project's minimal pom.xml: ch.qos.logback …
shabunc
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Exception thrown while using logback/slf4j

I am using slf4j 1.6.2 api jar (tried using 1.6.1 as well) - logback version is 0.9.29 (core & classic). I am using jdk1.6 on ubuntu. The exception I received is copied below. Exception in thread "main" java.lang.NoSuchMethodError:…
haider
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How to shorten thread name in logback logs?

You can shorten the name of the logger using %logger{x} syntax where x controls shortening procedure. Is there any way to shorten the name of the thread the same way?
Vladislav Rastrusny
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How do I remove newline from Java stacktraces in logback?

I'm trying to remove newline from Java stacktraces. I've following logback pattern - %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %replace(%msg){'\n', ''}%n I expect it to replace newlines in messages but it is not doing…
user375868
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Logback: SizeAndTimeBasedRollingPolicy not honoring totalSizeCap

I'm trying to manage my logging in a way in which my oldest archived logfiles are deleted once they've either reached the total cumulative size limit or reached their maximum history limit. When using the SizeAndTimeBasedRollingPolicyin Logback…
Brady Goldman
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Externalizing the location of logback.xml in Spring Boot using application.properties

How can I customize the location of logback.xml in Spring Boot using application.properties? I tried below but is not working. application.properties logging.config = /home/dev-01/Documents/logback.xml It is working if the logback.xml is located in…
richersoon
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Logback - Print out method name that called the log method

In my example, I have the following code: package com.example.somepackage; public class Example { public static void main(String[] args) { org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(Example.class); …
randers
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ClassCastException: org.slf4j.impl.Log4jLoggerAdapter cannot be cast to ch.qos.logback.classic.Logger

I was following this answer in order to add a appender on runtime. Even though that works for the original poster, I get this exception in line Logger logger = (Logger) LoggerFactory.getLogger("abc.xyz");: java.lang.ClassCastException:…
Erando
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How to configure Logback to add host-name/IP to each log event?

I am using Logback for logging. Scribe appenders send the logs in real time to a central Scribe aggregator. But I don't know how to add source machine IP in the logs for each log events. Looking at the aggregated central Scribe logs, it is almost…
Nipun Talukdar
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Turn off logback logging for other libraries while in certain class

I am successfully using Spring's @Scheduled annotation to execute a method every few seconds. The only issue is that I get a lot of log messages about transactions, etc from Hibernate and Spring because of this method. I want to keep the logging…
johnktims
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How can I configure logback conditionally based on context name?

I have three separate projects, each with their own embedded logback.xml files. Each of these files includes a common logging config file in the user's home durectory: After the include, I have this…
JBCP
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Java: How to log raw JSON as JSON and avoid escaping during logging with logback / slf4j

I'm using SLF4J with Logback in a JAX-RS application... I want to log to JSON in such a way that my message is not encoded again but printed raw into the logfile: At the moment it looks like…
kei1aeh5quahQu4U
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Using Logback but Log4j started displaying WARN no Appenders

I am using logback for my logging and it has been working however; the other day I started getting a warning log4j:WARN No appenders could be found for logger (org.apache.axis.i18n.ProjectResourceBundle). log4j:WARN Please initialize the log4j…
Chris Watts
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