Stack Overflow
Stack Overflow

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

3631 questions
26
votes
1 answer

Make logback pattern part optional?

Is it possible to make parts of logbacks pattern layout depending on an attribute? e.g. show bdid (...) just in the case when %X{bdid} exists? This appender …
Stefan K.
  • 7,701
  • 6
  • 52
  • 64
26
votes
3 answers

SLF4J + Logback does not log in WildFly

I run web application in WildFly 8 and for some reason it does not log. I use SLF4J with LOGBACK. The log file is created on deploy but it is empty. I do not see my log statements in wildfly logs either. The class contains: package…
Leos Literak
  • 8,805
  • 19
  • 81
  • 156
25
votes
1 answer

How can I change log level of single logger in runtime?

I wanna read spring property and based on this property change log level for some packages (not for root logger). How can I implement it using logback?
fedor.belov
  • 22,343
  • 26
  • 89
  • 134
24
votes
4 answers

Any reason to use private instead of private final static on the LogBack Logger?

When instantiating Logger in a Spring Controller, is there any reason to declare it as a static final? The Logger is not used outside MyController.class. I've seen both examples in use, but can't see why I should use one or the other. private…
Tommy
  • 4,011
  • 9
  • 37
  • 59
24
votes
6 answers

Mask sensitive data in logs with logback

I need to be able to search an event for any one of a number of patterns and replace the text in the pattern with a masked value. This is a feature in our application intended to prevent sensitive information falling into the logs. As the…
Michael Coxon
  • 3,337
  • 8
  • 46
  • 68
23
votes
4 answers

How to get logging working in scala unit tests with testng, slf4s, and logback

I'm new to Scala, and not that familiar with recent developments in Java, so I am having what I assume is a basic problem. I'm writing some Scala code, and testing it with test fixtures using ScalaTest and TestNG. The code under test uses slf4s to…
anelson
  • 2,569
  • 1
  • 19
  • 30
23
votes
1 answer

When not to use AsyncAppender in logback by default

Logback supports using an async appender with the class ch.qos.Logback.classic.AsyncAppender and according to the documentation, this will reduce the logging overhead on the application. So, why not just make it the default out of the box. What…
Tapan Nallan
  • 1,762
  • 3
  • 17
  • 37
23
votes
6 answers

How does SLF4J support structured logging

Anyone knows how structured logging is usually implemented with SLF4J? Is there any open source already out there handling this?
Alfred
  • 1,709
  • 8
  • 23
  • 38
23
votes
3 answers

Logging different level for a specific class using logback?

Can I override a logging level for a specific class only using logback.xml? i.e everything remains in INFO, except for one class which will log in DEBUG. I appended this after the default one, but does not seem to work
Donald
  • 329
  • 1
  • 3
  • 7
23
votes
2 answers

FileNamePattern in RollingFileAppender - logback Configuration

I have the following RollingFileappender in my logback configuration file. C:\Files\MyLogFile.log
Aks
  • 261
  • 1
  • 2
  • 6
22
votes
2 answers

How to configure logback to skip logging messages from org.package.* with all levels below WARN?

How do I configure logback not to log messages from loggers in package org.package and it's subpackages unless their level is WARN or ERROR?
Vladislav Rastrusny
  • 29,378
  • 23
  • 95
  • 156
22
votes
1 answer

How to make java.util.logging send logs to Logback?

I'm working on an app that logs using the slf4j api: import org.slf4j.Logger; import org.slf4j.LoggerFactory; ... private static final Logger LOG = LoggerFactory.getLogger(FreemarkerEmailPreviewGenerator.class); ... LOG.error("Error generating…
Nathan Russell
  • 3,428
  • 5
  • 30
  • 51
22
votes
4 answers

IntelliJ 14.1 logging output in xml

We use slf4j with logback, when running from the command line this still works as expected but within intellij it's different. Running junit tests using gradle in intellij, log output is in the following xml format:
martin treurnicht
  • 1,223
  • 1
  • 10
  • 17
21
votes
2 answers

GraalVM (native-image) can not compile logback dependencies

I'm using the current version of community edition: GraalVM/native-image 22.1.0 My project has a dependency to the logging framework logback (version 1.2.3) If I want to compile my "all-in-one" jar with graalVM the native-image complains: Error:…
Tony
  • 360
  • 2
  • 11
21
votes
5 answers

Process Id in Logback Logging Pattern

I have the following logback pattern: {"hostname": "${HOSTNAME}", "level": "%p", "method": "%M", "process_id": "${process}", "thread_id": "%t", "timestamp": "%d{Y-M-d}T%d{H:M:S.s}", …
qwwqwwq
  • 6,999
  • 2
  • 26
  • 49
1 2 3
…
99 100