源码:log4j.rootLogger=info,appender1
log4j.appender.appender1=org.apache.log4j.DailyRollingFileAppender
log4j.appender.appender1.append=true
log4j.appender.appender1.layout=org.apache.log4j.PatternLayout
log4j.appender.appender1.layout.ConversionPattern=[%d{HH:mm:ss:SSS}] <%p> [%c:%L (%M)] --%m %r %n
log4j.appender.appender1.File=D:/SmartHomeIosLog/Log
log4j.appender.appender1.DatePattern=yyyy-MM-dd'.log'
log4j.appender.appender1.Encoding=UTF-8
log4j.appender.appender1.Threshold=DEBUG
log4j.appender.appender1.ImmediateFlush=true
我设置的是每天产生一个日志文件,但是文件只有当天有,到第二天以后,前一天的日志文件不自动保存,这是怎么回事啊?