在tomcat的conf目录下，找到logging.properties，注释掉catalina等log即可；
#1catalina.org.apache.juli.AsyncFileHandler.level = INFO
#2localhost.org.apache.juli.AsyncFileHandler.level = INFO
#2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
#2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.
#3manager.org.apache.juli.AsyncFileHandler.level = INFO
#3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
#3manager.org.apache.juli.AsyncFileHandler.prefix = manager.
#4host-manager.org.apache.juli.AsyncFileHandler.level = INFO
#4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
#4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.
没有找到如何只保留固定数量或者固定天数的localhost_access_log.txt的方法。