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Questions tagged [appender]

An appender is a metaphor for an "output channel" in logging systems.

Commonly used in log4j/log4net and other inspired logging systems, appenders represent output channels such as files, databases or console. A logger can have various appenders associated with it, and every log messages written via this logger will be written to all associated output channels.

336 questions
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Very simple log4j2 XML configuration file using Console and File appender

I'd like a very simple XML configuration file with a console and a file appender using log4j2. (The Apache Website is killing me with much Information.)
Thorsten Niehues
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log4j: Log output of a specific class to a specific appender

I use log4j and would like to route the output of certain Loggers to specific files. I already have multiple appenders in place. Now, to make debugging easier, I want to tell log4j that the output generated by a specific class (e.g. foo.bar.Baz)…
gubrutz
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Log4Net, how to add a custom field to my logging

I use the log4net.Appender.AdoNetAppender appender. My log4net table are the following fields [Date],[Thread],[Level],[Logger],[Message],[Exception] I would need to add another field to the log4net table (e.g SalesId), but how would I specify in my…
Eminem
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How to create my own Appender in log4j?

I am new in log4j. Can anyone explain how to create my own Appender? i.e. how to implement the classes and interfaces and how to override it?
unknown
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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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How to exclude a single Class from a Log4j Logger / Appender?

I have a package "com.example". This package has five classes. I want to log four of these classes to a file, but exclude the fifth class. I could write four loggers, e.g. logger name="com.example.Class1", and add the same appender to all four…
Kai Wähner
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Log4j different appenders for different log levels using properties file

Since the official documentation for log4j is a broken link, and the getting started guide isn't helping me, I would like to know how to use two appenders with different log levels for the same logger, using a .properties file instead of an .xml…
alessiop86
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log4net BufferingForwardingAppender performance issue

EDIT 2 : I have solved the problem (see answer below) Please note that the problem potentially affects all appenders decorated with BufferingForwardingAppender as well as all appenders inheriting from BufferingAppenderSkeleton (respectively :…
darkey
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How to use AsyncAppender in log4j?

How to use AsyncAppender in log4j in order to write log message to the web service? Should I create my own Appender which would extend AsyncAppender or just attach custom appenders to the AsyncAppender? If the second choice is correct, where should…
Sergey
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log4j: How to use SocketAppender?

I've got an answer about how to use SocketAppender (I need it to gather logs from distributed system), but I am new to log4j and I have no idea how to use that sample code. Probably I should have log4j-server.properties like…
alicjasalamon
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Log to a database using log4j

Since in log4j javadoc is WARNING: This version of JDBCAppender is very likely to be completely replaced in the future. Moreoever, it does not log exceptions. What should I do to log to a database?
Daniel Moura
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How to configure null appender in log4j2

Log4j 1.* has a null appender class, but I couldn't find the equivalent in log4j 2. Is there one? How does one configure a null appender in log4j2.xml?
Meng Lu
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One logfile per run with log4j

How do you configure log4j.properties to have exactly one logfile per run of an app. I've read that you should use a timestamp in the filename but that will create many files per run as time goes by. I tried DailyRollingFileAppender and…
lilalinux
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log4net doesn't watch my app.config

I configured my log4net to watch on changes made to the app.config file. [assembly: log4net.Config.XmlConfigurator(Watch = true)] When I run my app and change things in the config file, these changes only take effect when I restart my app. Why…
Fabian
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How to solve the warnings in log4j???Continuable parsing error...The content of element type "log4j:configuration" must match

Warnings are shown ... log4j:WARN Continuable parsing error 28 and column 23 log4j:WARN The content of element type "log4j:configuration" must match "(renderer*,appender*,(category|logger)*,root?,categoryFactory?)". when execute the java files …
anuvabg
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