What's Up with Logging in Java?
Why one would use one of the following packages instead of the other? Java Logging Commons Logging Log4j SLF4j Logback ...
slf4j
Logging using SL4J, Jakarta Commons logging, log4j for third party libraries and my own code
I have some questions about logging, more specifically about setting it up and making sure it works. The project I'm doing will use Wicket, Spring and Hibernate. I know that Wicket and Hibernate uses Simple Logging Facade for Java (SL4J) and that Spring is using the logging component from Apache Commons. Will they co-exist happily? I t...
Hibernate 3.4 with slf4j and log4j
I'm attempting to upgrade from Hibernate 3.2 to 3.4, which apparently uses slf4j. Our project currently uses log4j. So my assumption is that I should be using the slf4j-log4j12 wrapped implementation. The Maven slf4j dependency is: <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1....
How to setup a central logging server and divide logging events from test and production?
How best should I setup a central logging (or perhaps 2, each one exclusive to either test or prod) server such that: I do not have to worry about the code referencing any conditionals that might accidentally log non-prod errors into the production error log4j bus. In other words, I do not wants to have code such as: if (!production) ...
How to send java.util.logging to log4j?
I have an existing application which does all of its logging against log4j. We use a number of other libraries that either also use log4j, or log against Commons Logging, which ends up using log4j under the covers in our environment. One of our dependencies even logs against slf4j, which also works fine since it eventually delegates to l...
Difference between Simple Logging Facade for Java and Apache Commons Logging
What is the difference between Simple Logging Facade for Java and Apache Commons Logging ? ...
Maven doesn't resolve hibernate-c3p0's dependency on slf4j
When I include hibernate-c3p0 in my Maven's pom.xml file, I get a runtime NoClassDefFoundError as it can't find org.slf4j.impl.StaticLoggerBinder. It was my impression that Maven would resolve this dependency – so if c3p0 requires slf4j, then slf4j would be downloaded and included. My pom.xml file has: <dependency> <groupId>org.hiber...
Is it worth wrapping a logging framework in an additional layer?
I'm currently looking at upgrading the logging mechanism in a medium-to-large-sized Java codebase. Messages are currently logged using static methods on a Debug class, and I have recommended switching from this to something like SLF4J or commons-logging. The application architect prefers that I encapsulate the dependency on SLF4J (possi...
How to use SLF4J Loggers in a JSP
I'm in the process of migrating the logging of a middle-sized application from a custom solution to something more standard. I've decided on using Logback and SLF4J, and I have successfully migrated most of the Java code. However, I have quite a bit of JSPs that simply use System.out for logging. I've never worked much with JSPs, and sta...
What access level should loggers be set to?
I'm using SLF4J with Log4J underneath. What access levels should I be setting my loggers to? static final Logger logger = LoggerFactory.getLogger(ClassName.class); ...
Hibernate in Servlet causesNoClassDefFoundError: org/slf4j/LoggerFactory
I have a Java (6) application which uses Hibernate (V3.3.2) to read data from HSQLDB, which i build and debug/run with Eclipse (V3.5.1), and it works fine. I then created a GWT (V1.7) Servlet web app, copied my hibernate classes into it, and added the same User Libraries dependencies. However when i run the servlet and try to access a U...
Logback tutorial
Where can I find a Logback tutorial and/or sample projects? Something similar with this "Log4j Tutorial" would be nice. Note: I am aware of the documentation available on the official Logback website The Logback Manual Logback documentation but is there anything else available? ...
SLF4J Message Format In WebSphere App Server
So, I'm beating my head against the wall with logging again. I know, how complex can it be? Well, let's see... I'm starting a new project to be run on WebSphere Application Server 6.1 (actually Portal Server 6.1, but it's WAS 6.1 under the hood - whatever). I usually use java.util.logging for my WAS projects and everything is fine. ...
Is there a Java 1.5 varargs API for slf4j yet?
I want to get rid of this lot... public void info(String msg); public void info(String format, Object arg); public void info(String format, Object arg1, Object arg2); public void info(String format, Object[] argArray); ...and replace it with this one... public void info(String format, Object ... args); ...so that my logging syntax ...
Logback SMTPAppender Limiting Rate
How can I limit the rate of emails a Logback SMTPAppender, so that it would email me at most once every n minutes? I have setup my logging according to the Logback appender, but I don't quite see how it be configured or subclassed to implement that. Is there a hidden feature? Did someone develop a subclass to handle this? ...
slf4j with log4j. Get logger to reset/restart
I am trying to switch System.out on a button action, which works but the logger is still writing to the old PrintStream. import org.slf4j.Logger; import org.slf4j.LoggerFactory; private final static Logger logger = LoggerFactory.getLogger(ActionButtons.class); PrintStream mStartingOut = System.out; public void switchOut() { if (S...
Logging Facade or Logger in an Application for a newcomer
Hello Everyone I am at the point for my little test-webapplication that I need some logging. I have no real experience in log4j nor java.util.logging and I was thinking if I should start right away with a logging facade (slf4j). I was reading that a logging facade should be used for libraries that are shared (frameworks) which makes se...
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 solves? Is slf4j the final word or is there even a better "the next next log4j" industry ...
Disabling logging for jetty run from maven
I downloaded a big framework which I need to built from source. The project uses a maven build structure, and includes a demo application which can be viewed with an embedded jetty. Maven plugins handle all this stuff. However when I run the demo application (with mvn jetty:run), I can't really use it because for some reason logging on ...
How to turn off logging from slf4j
It's a third party application generating huge amounts of logentries on our appserver. Like this: [03.03.10 15:21:57:250 CET] 00000180 FtpProtocolHa I org.slf4j.impl.JCLLoggerAdapter info Close connection : 10.227.10.10 - admin [03.03.10 15:27:35:209 CET] 00000181 MinaFtpProtoc I org.slf4j.impl.JCLLoggerAdapter info [/10.227.10.10] CLO...