log4j 日志重复问题

官方示例

<?xml version="1.0" encoding="UTF-8"?><Configurationstatus = WARN "><Appenders><Consolename = Console " target="SYSTEM_OUT"><PatternLayoutpattern = d { HH:mm:ss.SSS } t ] level %logger { msg % n " /></Console></Appenders><Loggers><Loggername = com.foo.Bar " level="trace" additivity="false"><AppenderRefref = Console " /></Logger><Rootlevel = error "><AppenderRefref = Console " /></Root></Loggers></Configuration>

配置中，additivity="false"会保证Console中的日志不再重复。