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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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How can I get complete stacktraces for exceptions thrown in tests when using sbt and testng?

The stacktraces are truncated - e.g. they end with [info] ... Using last or changing traceLevel doesn't help - it simply prints the complete stacktrace of the sbt wrapper. This is testing with testng (also I believe using scalatest and sl4j)
wn-
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How to find which library slf4j has bound itself to?

I am using slf4j for logging in my application. I get the purpose of slf4j. I would like to know how to find out which logging-library slf4j is currently binding to. I have log4j in my referenced libraries. I am assuming that slf4j has bound itself…
psykeron
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Which Android logging framework to use?

My question seems to be easily answerable, but there are several good solutions. I like to choose the 'best' one. Available frameworks (feel free to suggest more): Androlog SLF4J Android Log4J - Android Pros/Cons: Androlog: Pro: Similar to…
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ClassNotFoundException: org.slf4j.LoggerFactory

I am trying to run GWT RequestFactory and facing this error: ClassNotFoundException: org.slf4j.LoggerFactory I have tried to download slf4j-api-1.3.1.jar but it didnt resolve the issue Any idea exactly which jar I need to download ?
junaidp
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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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How to set the log level to DEBUG during Junit tests?

I am using SLF4J with LOG4J, and the configurations are usually in the log4j.properties, and it sets the log level to INFO. However during the tests I would like to set the logs to DEBUG. I can't see a way to automate this, neither to have something…
PedroD
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How to get SLF4J "Hello World" working with log4j?

The "Hello World" example from SLF4J is not working for me. I guess this is because I added slf4j-log4 to my classpath. Should I configure log4j directly for the hello world to work? log4j:WARN No appenders could be found for logger…
ripper234
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Formatting floating point numbers in SLF4J

I'd like to format my doubles and floats to a certain number of decimal places with SLF4J. Basically, I'm looking for the equivalent of Java's String.format("%.2f", floatValue) in SLF4J. Having read through SLF4J's documentation and googling around…
Matthias Braun
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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 exclude commons-logging from a scala/sbt/slf4j project?

My scala/sbt project uses grizzled-slf4j and logback. A third-party dependency uses Apache Commons Logging. With Java/Maven, I would use jcl-over-slf4j and logback-classic so that I can use logback as the unified logging backend. I would also…
wks
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NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder

I'm trying to run the sample tiles example given here. Below is my POM.xml: junit junit 3.8.1 …
javanoob
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SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". in a Maven Project

I have a dependency for SLF4J. I am getting this error: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for…
Kayser
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Is Log4j being abandoned in favor of Slf4j?

It seems that log4j has some class loading issues (among others) and it seems to me the trend is to move out of log4j toward slf4j. (Hibernate stopped using the first in favor of the latter) Is it true? What are the main issues in log4j that slf4j…
ruchirhhi
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Using log4j2 with slf4j: java.lang.StackOverflowError

So I have tried following this (non-maven implementation) and requirements in their web site for adding slf4j to log4j. and tried using this code public static void main(String[] args) { Logger logger = LoggerFactory.getLogger(Main.class); …
Akshay
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Is there a logging facade for the .NET world?

I'm somewhat new to the .NET stack and I was wondering if there is an equivalent to slf4j for the .NET platform. For me, logging to a Facade and being able to swap out logging implementations as needed just makes sense. Furthermore, the wrapper APIs…
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