I am using the following to enable debug information
log4j.rootLogger=DEBUG, CA
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
To be honest, I copy above from somewhere else. I am not sure what's the CA mean here?
it is Console Appender.
ConsoleAppender appends log events to System.out or System.err using a layout specified by the user. The default target is System.out.
It's ConsoleAppender, but the name is not important as long as it's consistent.
For example
log4j.rootLogger=DEBUG, BLAH
log4j.appender.BLAH=org.apache.log4j.ConsoleAppender
Related
I am using below log4j.properties. I want to create file minute basis. I checked many post on this same question and tried but it didnt worked for me. I am using log4j first time, Please suggest if I am doing something wrong in properties file.
log4j.rootLogger=debug, stdout, R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %-5p [%c{1}] %m %n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=/opt/aTest/log.out
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=10
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern="%d %-5p [%c{1}] %m %n
log4j.appender.DailyRoller=org.apache.log4j.DailyRollingFileAppender
log4j.appender.DailyRoller.datePattern='.'yyyy-MM-dd-HH-mm
log4j.appender.DailyRoller.file=/opt/aTest/log.out
log4j.appender.DailyRoller.layout=org.apache.log4j.PatternLayout
log4j.appender.DailyRoller.layout.ConversionPattern=%d{yyyy-MMM-dd HH:mm:ss,SSS} [%t] %c %x%n %-5p %m%n
log4j.appender.LOGFILE=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.LOGFILE.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.LOGFILE.RollingPolicy.FileNamePattern=/opt/aTest/log_%d{yyyy-MM-dd-HH}.out
I am getting only one log.out file created and for each run log gets appended in same file.
You should try the XML format for configuration; the properties files are hard to understand, easy to get wrong (as you can tell :-)
The problem here is that it's not enough to define an appender, you also have to tell log4j to use it:
log4j.rootLogger=debug, stdout, DailyRoller
Also DailyRoller is a confusing name for a per-minute rolling appender.
My log4j.properties file is pasted below. My understanding is that we need to add Appenders to the root logger for the appender to work. As you can see in the below properties file, only appender A is attached to the root logger (log4j.rootLogger=info, A). However, what I see is that the logging information is printed to both the appenders (ConsoleAppender - A and File Appender - B). How is this possible?
log4j.rootLogger=info, A
log4j.appender.A=org.apache.log4j.ConsoleAppender
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=%-4r [%t] [rid=%X{RID} ] %-5p %c %x - %m%n
log4j.appender.B=org.apache.log4j.FileAppender
log4j.appender.B.layout=org.apache.log4j.PatternLayout
log4j.appender.B.file=target/server.log
log4j.appender.B.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
Well, it turns out that the Console appender (A) was printing out to the server.log (glassfish log) which incidentally is also the name of the log file associated with appender B.
The following property was attached to the glassfish server (startup parameters) which helped me understand which log4j.properties (in case of stray properties file) file is loaded along with information like what appenders are used for logging.
-Dlog4j.debug=true
I'm using log4j 1.2 and I need to:
log everything (including logging from referenced libraries) to console
log from my code to file (and maybe to console)
Using the following code:
log4j.rootLogger=DEBUG, CONSOLE
log4j.com.mypackage=ALL, CONSOLE, CSV
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Target=System.err
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
log4j.appender.CSV=org.apache.log4j.FileAppender
log4j.appender.CSV.File=./myfile.csv
log4j.appender.CSV.Append=false
log4j.appender.CSV.layout=org.apache.log4j.PatternLayout
log4j.appender.CSV.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
The logfile is not created.
Other try I done:
If I add CSV appender to rootLogger, then the file is created and filled.
If I add CSV appender to rootLogger and disable it, then the file is just created.
If I log only my logger to console... the it works fine
Do you have any idea to solve?
Thanks
You are missing an important part.
The value has to be
log4j.logger.com.mypackage
Note that you are missing logger in the log definition
So, I have the log4j configurations set up and it output to the console just fine. But I need it to output to a file now. I am using Axis2 in Eclipse Galileo.
I edited the default log4j.properties file to this:
Set root category priority to INFO and its only appender to CONSOLE.
log4j.rootCategory=INFO, CONSOLE
log4j.rootCategory=INFO, CONSOLE, LOGFILE
Set the enterprise logger priority to FATAL
log4j.logger.org.apache.axis2.enterprise=FATAL
log4j.logger.de.hunsicker.jalopy.io=FATAL
log4j.logger.httpclient.wire.header=FATAL
log4j.logger.org.apache.commons.httpclient=FATAL
CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[%p] %m%n
LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=C:\Users\*username*\Desktop\Android\Android_WS\src\wtp\AndroidWS_Log.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d [%t] %-5p %c %x - %m%n
But the output is still not getting to the Log file. Any help would be much appreciated. Thanks Guys!
Remove line 2:
log4j.rootCategory=INFO, CONSOLE
Also, try using a forward slash, '/' for the directory separator:
log4j.appender.LOGFILE.File=C:/Users/*username*/Desktop/Android/Android_WS/src/wtp/AndroidWS_Log.log
Make sure that your server has write access rights to the log file.
Is there any way to tell to log4j to write its log to the file and to the console?
thanks
there are my properties:
log4j.rootLogger=DEBUG,console,R
log4j.rootLogger=INFO, FILE
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
log4j.appender.FILE.File=log4j.log
log4j.appender.FILE.MaxFileSize=512KB
log4j.appender.FILE.MaxBackupIndex=3
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
Your root logger definition is a bit confused.
See the log4j documentation.
This is a standard Java properties file, which means that lines are treated as key=value pairs. Your second log4j.rootLogger line is overwriting the first, which explains why you aren't seeing anything on the console appender.
You need to merge your two rootLogger definitions into one. It looks like you're trying to have DEBUG messages go to the console and INFO messages to the file. The root logger can only have one level, so you need to change your configuration so that the appenders have appropriate levels.
While I haven't verified that this is correct, I'd guess it'll look something like this:
log4j.rootLogger=DEBUG,console,file
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.file=org.apache.log4j.RollingFileAppender
Note that you also have an error in casing - you have console lowercase in one place and in CAPS in another.
Your log4j File should look something like below read comments.
# Define the types of logger and level of logging
log4j.rootLogger = DEBUG,console, FILE
# Define the File appender
log4j.appender.FILE=org.apache.log4j.FileAppender
# Define Console Appender
log4j.appender.console=org.apache.log4j.ConsoleAppender
# Define the layout for console appender. If you do not
# define it, you will get an error
log4j.appender.console.layout=org.apache.log4j.PatternLayout
# Set the name of the file
log4j.appender.FILE.File=log.out
# Set the immediate flush to true (default)
log4j.appender.FILE.ImmediateFlush=true
# Set the threshold to debug mode
log4j.appender.FILE.Threshold=debug
# Set the append to false, overwrite
log4j.appender.FILE.Append=false
# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%m%n
This works well for console in debug mode
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
Write the root logger as below for logging on both console and FILE
log4j.rootLogger=ERROR,console,FILE
And write the respective definitions like Target, Layout, and ConversionPattern (MaxFileSize for file etc).
Thats the exact usecase I was looking for my command line based tool. Wanted to show INFO on console but wanted to log more detailed info to log file. After various suggestion, finally go this solved by using 'log4j.appender.FILE.Threshold'
Something like below.:
log4j.rootLogger=DEBUG,CONSOLE,FILE
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
log4j.appender.FILE.File=output/log.log
log4j.appender.CONSOLE.Threshold=INFO
log4j.appender.FILE.Threshold=DEBUG