iot-project System.out ${pattern} UTF-8 ${LOG_HOME}/log.log INFO 100MB ${LOG_HOME}/log.%d{yyyy-MM-dd}.log.%i.gz 5 UTF-8 ${pattern} error 100MB ${LOG_HOME}/error.%d{yyyy-MM-dd}.log.%i.gz 30 5GB UTF-8 [%d{yyyy-MM-dd HH:mm:ss.SSS}] [%thread] %-5level %logger{36} : %msg%n