Log4j2_学习_01_Log4j 2使用教程

一、推荐使用的log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- 设置log4j2的自身log级别为warn -->
<!-- OFF > FATAL > ERROR > WARN > INFO > DEBUG > TRACE > ALL -->
<configuration status="WARN" monitorInterval="30">
    <properties>
        <property name="LOG_HOME">logs</property>
        <property name="FILE_NAME">info</property>
        <property name="FILE_NAME_WARN">warn</property>
        <property name="FILE_NAME_ERROR">error</property>
    </properties>
    <appenders>
        <console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
        </console>
 
        <RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/${FILE_NAME}.log"
            filePattern="${LOG_HOME}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd HH-mm}-%i.log">
            <!--控制台只输出level及以上级别的信息（onMatch），其他的直接拒绝（onMismatch） -->
            <Filters>
                <ThresholdFilter level="INFO" />
                <ThresholdFilter level="WARN" onMatch="DENY"
                    onMismatch="NEUTRAL" />
            </Filters>
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="100 MB" />
            </Policies>
            <DefaultRolloverStrategy max="20" />
        </RollingFile>
 
        <RollingFile name="RollingFileWarn" fileName="${LOG_HOME}/${FILE_NAME_WARN}.log"
            filePattern="$${LOG_HOME}/$${date:yyyy-MM}/${FILE_NAME_WARN}-%d{yyyy-MM-dd HH-mm}-%i.log">
            <Filters>
                <ThresholdFilter level="WARN" />
                <ThresholdFilter level="ERROR" onMatch="DENY"
                    onMismatch="NEUTRAL" />
            </Filters>
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="100 MB" />
            </Policies>
            <DefaultRolloverStrategy max="20" />
        </RollingFile>
 
        <RollingFile name="RollingFileError" fileName="${LOG_HOME}/${FILE_NAME_ERROR}.log"
            filePattern="${LOG_HOME}/$${date:yyyy-MM}/${FILE_NAME_ERROR}-%d{yyyy-MM-dd HH-mm}-%i.log">
            <ThresholdFilter level="ERROR" />
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="100 MB" />
            </Policies>
            <DefaultRolloverStrategy max="20" />
        </RollingFile>
 
    </appenders>
 
    <loggers>
        <!--过滤掉spring和mybatis的一些无用的DEBUG信息 -->
        <logger name="org.springframework" level="INFO"></logger>
        <logger name="org.mybatis" level="INFO"></logger>
        <root level="all">
            <appender-ref ref="Console" />
            <appender-ref ref="RollingFileInfo" />
            <appender-ref ref="RollingFileWarn" />
            <appender-ref ref="RollingFileError" />
        </root>
    </loggers>
 
</configuration>

二、参考文献

1.LOG4J2 简明教程

1.Log4j 2使用教程

2.详解log4j2(上) - 从基础到实战