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Questions tagged [slf4j]

Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction layer for various logging frameworks. Please also include a tag for the actual logging framework you're using if you are attempting to configure logging for your application.

The Simple Logging Facade for Java (commonly known as "SLF4J") serves as a simple facade or abstraction layer for various logging frameworks, e.g. java.util.logging, log4j and logback.

One can unify all logging across an application and the libraries it uses via this abstraction layer. Code familiar with SLF4J uses the SLF4J API directly for logging. Any existing code or libraries that use some other logging framework can be bridged to get their logging redirected to SLF4J instead. The end application at deployment time includes a binding to the actual logging framework that they are using, and can configure that logging framework as desired for all logging throughout the application.

References:

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Overriding logback configurations

Is there any way that we can override the logback configurations? I know that we define the logback configurations in file named logback.xml (usually stored in the path src/main/resources) and I know that by using tag we can set an…
Mr.Q
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LoggerFactory.getLogger(ClassName.class) vs LoggerFactory.getLogger(this.getClass().getName())

I'm trying to improve my optimization skills in Java. In order to achieve that, I've got an old program I made and I'm trying my best to make it better. In this program I'm using SL4J for logging. To get the logger I did: private static final Logger…
Aurasphere
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Is there a simple way to specify a global dependency exclude in SBT

How would you exclude a transitive dependency globally? My project depends on a lot of the Twitter libraries or on libraries that depend on the Twitter libraries. I don't want slf4j-jdk14 in my classpath, no matter what (I use logback as slf4j…
reikje
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How to get liquibase to log using slf4j?

A lot of people are unsure how to fix logging for liquibase, either to the console or file. Is it possible to make liquibase log to slf4j?
Benny Bottema
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Send/redirect/route java.util.logging.Logger (JUL) to Logback using SLF4J?

Is it possible to have a typical call to java.util.logging.Logger and have it route to Logback using SLF4J? This would be nice since I wouldn't have to refactor the old jul code line by line. EG, say we have this line: private static Logger logger =…
Zombies
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Slf4j: Found slf4j-api dependency but no providers were found

I use Lombok. Some time ago when building a project, the compiler started issuing the following message: Found slf4j-api dependency but no providers were found. Did you mean to add slf4j-simple? See https://www.slf4j.org/codes.html#noProviders …
Вячеслав Чернышов
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Force slf4j to use logback

Is there anyway to force slf4j to use specific logging provider (logback in my case)? As in their docs: Multiple bindings were found on the class path SLF4J API is desinged to bind with one and only one underlying logging framework at a time. If…
madhead
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Using java annotation to inject logger dependency

I am using spring with aspect-j annotation support to allow for an @Loggable annotation. This allows automatic logging on a class based on the configuration. I am wondering if I can somehow use this annotation to expose an slf4j Logger variable…
mlo
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How to enable DEBUG level logging with Jetty embedded?

I'm trying to set the logging level to DEBUG in an embedded Jetty instance. The documentation at http://docs.codehaus.org/display/JETTY/Debugging says to - call SystemProperty.set("DEBUG", "true") before calling new …
HolySamosa
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SLF4J NoSuchMethodError on LocationAwareLogger

This is a question that has been asked before, but unfortunately no solution seems to work for me. I am facing this exception (with abridged stack trace): java.lang.NoSuchMethodError:…
Peter Becker
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slf4j logging with jdk – how to enable debug?

By default slf4j, when using with jdk (slf4j-jdk14-1.6.1.jar), does not log debug messages. How do I enable them? I can’t find info neither in the official docs, the web or here on how to enable it. I found some info on (failed though) creating a…
Kissaki
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slf4j & log4j2 maven setup query

I am using log4j2 and slf4j in my project & using maven for the build. I am using the following pom file (releveant dependencies shown only) but I am getting the error copied below with this pom file - any idea what I need to add/remove to get this…
user3813256
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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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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…
TheLameProgrammer
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Printing an array with slf4j only prints the first element

I have the following code: private static final Logger logger = LoggerFactory.getLogger(Some.class); ... String[] splits=someString.split(".."); logger.info("The string was split into <{}>",splits); // prints first element What is the right way to…
Pavel_K
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