log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--status表示logger internal本身的打印等级-->
<Configuration status="WARN">
    <Properties>
        <Property name="log-path">log/log.log</Property>
    </Properties>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5p %logger{36} - %msg%n"/>
        </Console>
        <!--fileName 的位置很难琢磨 //todo-->
        <File name="FileLog" fileName="logfile.log" append="true">
            <PatternLayout pattern="%d %t %-5p %c{2} - %m%n" />
        </File>
        <!--filePattern 表示存档文件命名规则-->
        <RollingFile name="RollingFile" fileName="${log-path}/rollinglog.log" filePattern="${log-path}/%d{YYYYMMdd}.log">
            <PatternLayout pattern="%d{YYYY-MM-dd HH:mm:ss} [%t] %-5p %c{1}:%L - %msg%n" />
            <Policies>
                <SizeBasedTriggeringPolicy size="10 MB" />
            </Policies>
            <DefaultRolloverStrategy max="20" />
        </RollingFile>
        <RollingFile name="DailyRollingFile-info" fileName="${log-path}/dayily-info.log" filePattern="${log-path}/daily-info-%d{YYYYMMdd}.log">
            <PatternLayout pattern="%d{YYYY-MM-dd HH:mm:ss} [%t] %-5p %c{1}:%L - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy interval="24" modulate="true" />
            </Policies>
        </RollingFile>
        <RollingFile name="DailyRollingFile-error" fileName="${log-path}/dayily-error.log" filePattern="${log-path}/daily-error-%d{YYYYMMdd}.log">
            <PatternLayout pattern="%d{YYYY-MM-dd HH:mm:ss} [%t] %-5p %c{1}:%L - %msg%n" />
            <Policies>
                <!--24 表示24小时还是24分钟，由什么决定 //TODO-->
                <TimeBasedTriggeringPolicy interval="24" modulate="true" />
            </Policies>
        </RollingFile>
    </Appenders>
    <!--Performance will be improved if substitute RollingFile with RandomAccessFileAppender nextversion-->
    <Loggers>
        <!-- additivity 表示是否向父logger传递LogEvent -->
        <logger name="mm.Foo" level="debug" additivity="false">
            <appender-ref ref="RollingFile" level="info" />
            <appender-ref ref="FileLog" level="error"/>
        </logger>
        <!--if the root logger is not configured, the default will be used-->
        <Root level="error">
            <appender-ref ref="Console"/>
        </Root>
        <!--没有相应名字的logger会使用Root-->
    </Loggers>
</Configuration>