Log4j separate Log files

Question

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Creating multiple log files of different content with log4j

I want to store Debug logs and info logs in separate files can anyone give me the sample.

log4j.rootLogger=debug,R1,R2

log4j.appender.R2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R2.File=/Test/ex/ex.log
log4j.appender.R1.DatePattern='.'dd-MM-yy
log4j.appender.R2.layout=org.apache.log4j.PatternLayout
log4j.appender.R2.layout.ConversionPattern=%d{dd/MM/yy kk:mm:ss.SSS} %-5p [%t] %x (%F:%L) - %m%n

When I try the above, debug and info logs are storing in sample file. But how can I store separately.

read here http://stackoverflow.com/q/728295/544983 – Juvanis Oct 09 '12 at 11:09 — Juvanis, Oct 09 '12 at 11:09

score 1 · Answer 1 · answered Oct 09 '12 at 11:39

The key is to use a LevelMatchFilter provided by log4j.

Here an updated version of your configuration

log4j.rootLogger=debug,R1,R2

log4j.appender.R1.DatePattern='.'dd-MM-yy 
log4j.appender.R1=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R1.File=/Test/error.log
log4j.appender.R1.layout=org.apache.log4j.PatternLayout 
log4j.appender.R1.layout.ConversionPattern=%d{dd/MM/yy kk:mm:ss.SSS} %-5p [%t] %x (%F:%L) - %m
log4j.appender.R1.filter.1=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.R1.filter.1.LevelToMatch=ERROR
log4j.appender.R1.filter.1.AcceptOnMatch=true
log4j.appender.R1.filter.2=org.apache.log4j.varia.DenyAllFilter

log4j.appender.R2.DatePattern='.'dd-MM-yy 
log4j.appender.R2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R2.File=/Test/info.log
log4j.appender.R2.layout=org.apache.log4j.PatternLayout 
log4j.appender.R2.layout.ConversionPattern=%d{dd/MM/yy kk:mm:ss.SSS} %-5p [%t] %x (%F:%L) - %m
log4j.appender.R2.filter.1=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.R2.filter.1.LevelToMatch=INFO
log4j.appender.R2.filter.1.AcceptOnMatch=true
log4j.appender.R2.filter.2=org.apache.log4j.varia.DenyAllFilter

log4j.appender.debug.DatePattern='.'dd-MM-yy 
log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
log4j.appender.debug.File=/Test/debug.log
log4j.appender.debug.layout=org.apache.log4j.PatternLayout 
log4j.appender.debug.layout.ConversionPattern=%d{dd/MM/yy kk:mm:ss.SSS} %-5p [%t] %x (%F:%L) - %m
log4j.appender.debug.filter.1=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.debug.filter.1.LevelToMatch=DEBUG
log4j.appender.debug.filter.1.AcceptOnMatch=true
log4j.appender.debug.filter.2=org.apache.log4j.varia.DenyAllFilter

References : PropertyConfiguration LevelMatchFilter

Log4j separate Log files

1 Answers1