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I have a log4j logger that currently writes the log both to console and to a file, which works fine.
Later I'd like to configure it to log INFO + ERROR to the logfile, but only show ERROR on console. What would I have to change to achieve this?
log4j.rootLogger=INFO, console, MyFileAppender
log4j.logger.org.apache.cxf=INFO, console
log4j.logger.org.apache.cxf.interceptor.LoggingInInterceptor=INFO, console
log4j.logger.org.apache.cxf.interceptor.LoggingOutInterceptor=INFO, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.MyFileAppender=org.apache.log4j.RollingFileAppender
log4j.appender.MyFileAppender.Append=true
log4j.appender.MyFileAppender.File=c:/logs.log
Further, I'd like to prevent the CXF XML requests to be logged in the file. But I want them still to be shown in the console. How?
760
You can set a different logging level for each logging handler but it seems you will have to set the logger's level to the "lowest". In the example below I set the logger to DEBUG, the stream handler to INFO and the TimedRotatingFileHandler to DEBUG. So the file has DEBUG entries and the stream outputs only INFO.
There are six log levels in Python; each level is associated with an integer that indicates the log severity: NOTSET=0, DEBUG=10, INFO=20, WARN=30, ERROR=40, and CRITICAL=50. All the levels are rather straightforward (DEBUG < INFO < WARN ) except NOTSET, whose particularity will be addressed next.
Configuring the log levels per each appender has to be done separately unless it is same as the root level configuration. Below sample log4.properties file is configured to log INFO and above into the console, but only ERROR and above into the file.
log4j.appender.[appender-name].Threshold=[Level]
Look at the last line of the below example (from "How to integrate log4j with your Java project").
# root level configurations
log4j.rootLogger=INFO,console,file
# configuration for console outputs
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
# configuration for file output (into a file named messages.log)
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=messages.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
# threshold for file output
log4j.appender.file.Threshold=ERROR
Any of the followings will help.
log4j.logger.[package]=[Level]
log4j.logger.[package]=[Level], [Appender]
As an example:
log4j.logger.org.apache.cxf=INFO, console
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