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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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Suppress all Logback output to console?

How can I configure Logback to suppress all of its output to the console (standard output)? In particular, I wish to suppress (or redirect) Logback's own log messages such as the following: 16:50:25,814 |-INFO in…
Derek Mahar
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Disable the log from specific class/jar via logback.xml

In my application I use Java, Hibernate. Logging : I use logback.xml Can anyone suggest if there is a way to disable the logs from the below specific class from Hibernate jar. LOGGER to be removed from the specific class : ERROR…
Alagammal P
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Run Logback in Debug

I've recently switched from log4j to logback and am wondering if there is an easy way to run logback in debug mode, similar to log4j's log4j.debug property. I need to see where it is picking up my logback.xml from. The docs mention using a…
dogbane
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How to create 2 different ROOT loggers with logback?

I'm happily using SLF4J with logback and use 2 appenders for the ROOT logger. How could we have different log-levels for both appenders? I still need all…
Dimitri Dewaele
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How to use multiple configurations with logback in a single project?

The configuration file for logback gets found on the classpath, and is therefore Eclipse-project-specific, which is not what I want. I'm using multiple Java utilities, all of them residing in a single project (this sharing the classpath), and I need…
maaartinus
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How to roll the log file on startup in logback

I would like to configure logback to do the following. Log to a file Roll the file when it reaches 50MB Only keep 7 days worth of logs On startup always generate a new file (do a roll) I have it all working except for the last item, startup roll. …
Mike Q
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Setting logback.xml path programmatically

I know I can set the logback.xml path like this: Specifying the location of the default configuration file as a system property You may specify the location of the default configuration file with a system property named "logback.configurationFile".…
shabby
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How to configure logback for package?

Is it possible to configure logback to log at e.g. WARN or INFO level for all packages but x.y? And then separate configuration for package x.y only.
Opal
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Lambda support for SLF4J API

In Log4j latest API we have Lambda support where I can manage the Debug option easily. Example: logger.debug("This {} and {} with {} ", () -> this, () -> that, () -> compute()); But for slf4j/logback is there any option to have lambda enabled…
Souvik
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Why calling LoggerFactory.getLogger(...) every time is not recommended?

I've read tons of posts and documents (on this site and elsewhere) pointing that the recommended pattern for SFL4J logging is: public class MyClass { final static Logger logger = LoggerFactory.getLogger(MyClass.class); public void…
danirod
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Unable to use Spring Property Placeholders in logback.xml

I have a Spring Boot console app using Logback. All of the properties (for the app as well as for Logback) are externalized into a standard application.properties file in the classpath. These properties are picked up just fine in the app itself, but…
brmc72
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Is it possible to configure logback logger levels on the command line?

Log4J allows you to pass the level you'd like particular loggers in your application to log at from the command line, e.g. "-Dlog4j.logger.com.whatever.MyClass=DEBUG". I can't find any similar facility in Logback. According to the FAQ, all it…
bfancher
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Logback and Jboss 7 - don't work together?

I am having a curious problem. I had this Java application which was previously deployed in tomcat and happily used logback classic as an slf4j implementation. Now when we tried to deploy the same app in a jboss 7.1.final server it doesn't even…
Soumya
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Is Logback also affected by the Log4j zero-day vulnerability issue in Spring Boot?

As I understand it, Logback is written by the same authors. Our applications are using Logback instead. Is there a chance that Logback is also affected by the exploit in Log4j? This is critical for our organisation.
saran3h
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Sharing one encoder/pattern among multiple Appenders in Logback

This is my first foray into the world of LogBack, however I couldn't find anywhere in the documentation where I could define an encoder/pattern once and share it among multiple appenders. Any idea how to accomplish this?
Will Madison
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