在 log4j 中使用 RollingFileAppender 时覆盖到相同的日志文件

Question

I'm having problem with log4j. when the log crosses the limit of the file size it's rewriting the existing log instead of creating new one. what can i do to create a new log file after reaching the file size.

log4j.appender.Default=org.apache.log4j.RollingFileAppender
log4j.appender.Default.Threshold=INFO
log4j.appender.Default.File=debug.log
log4j.appender.Default.FilePattern=debug.%i.log
log4j.appender.Default.layout=org.apache.log4j.PatternLayout
log4j.appender.Default.layout.ConversionPattern=[%d,%c{1}]%m%n
log4j.appender.Default.MaxFileSize=100KB
log4j.appender.Default.MaxBackupIndex=10
log4j.appender.Default.Append=true

Answer 1

You can zip the files and rotate the log files when it reaches a maximum size by using SizeBasedTriggeringPolicy and defining a rolling policy. Below is a small snippet for your reference,

log4j.appender.Default.layout=org.apache.log4j.PatternLayout log4j.appender.Default=org.apache.log4j.rolling.RollingFileAppender log4j.appender.Default.rollingPolicy=org.apache.log4j.rolling.FixedWindowRollingPolicy
log4j.appender.Default.triggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.Default.rollingPolicy.ActiveFileName =${log.dir}/${log.file}.log log4j.appender.Default.rollingPolicy.FileNamePattern=${log.dir}/${log.file}-.%i.log.gz log4j.appender.Default.triggeringPolicy.MaxFileSize=10000 log4j.appender.Default.rollingPolicy.maxIndex=10