问题
How can I ensure that all timestamps that my log4j is using, are in GMT?
I have tried the following but it prints "GMT" inside the timestamp
log4j.appender.ConversionPattern=%d{HH\:mm\:ss,SSS}{GMT} %-4r %-5p [%t] %3x - %m%n
回答1:
I have log4j-1.2.16 and the following lines work properly:
log4j.appender.A1.layout=org.apache.log4j.EnhancedPatternLayout
log4j.appender.A1.layout.ConversionPattern=%d{ISO8601}{GMT} [%-5p] [%t] [%F:%L] - %m%n
If it doesn't work, then you have to download extras (companios section). This package contains EnhancedPatternLayout: Download apache-log4j-extras
来源：https://stackoverflow.com/questions/3634585/log4j-how-to-ensure-timestamps-are-always-in-gmt-using-conversionpattern