打开WEB-INFconfiglog4j.propertis文件
log4j.rootLogger=INFO, stdout, R 改为log4j.rootLogger=INFO, R
log4j.appender.R.MaxFileSize=200KB 改为 log4j.appender.R.MaxFileSize=51200KB
log4j.appender.R.MaxBackupIndex=2 改为 log4j.appender.R.MaxBackupIndex=20