業務場景：為了便於定位生產環境的問題定位和業務日誌資料的分析，需要將業務日誌和應用日誌分離

log4j.xml配置如下：

其中：dailyRolling是父級，bizDailyRolling是子級，要實現子級日誌不在父級中出現，關鍵在於log4j.additivity.bizDailyRolling=false

log4j.rootLogger=DEBUG,dailyRolling

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p [%F:%L] : %m%n

##應用日誌輸出配置
log4j.logger.dailyRolling=DEBUG,dailyRolling
log4j.additivity.dailyRolling=false
log4j.appender.dailyRolling=org.apache.log4j.DailyRollingFileAppender
log4j.appender.dailyRolling.File=../logs/boss_web.log
# Pattern to output: date priority [category] - message
log4j.appender.dailyRolling.DatePattern='_'yyyy-MM-dd'.log'
log4j.appender.dailyRolling.layout=org.apache.log4j.PatternLayout
log4j.appender.dailyRolling.layout.ConversionPattern=%d [%t] %-5p [%F:%L] : %m%n
log4j.appender.dailyRolling.BufferedIO=false
log4j.appender.dailyRolling.BufferSize=8192

##業務日誌單獨輸出配置
##子級bizDailyRolling的日誌不在父級dailyRolling出現重複輸出
log4j.logger.bizDailyRolling=WARN,bizDailyRolling
log4j.additivity.bizDailyRolling=false
log4j.appender.bizDailyRolling=org.apache.log4j.DailyRollingFileAppender
#日誌輸出等級分離：只輸出該等級以上的日誌
log4j.appender.bizDailyRolling.Threshold=WARN
log4j.appender.bizDailyRolling.File=../logs/request/app_request.log
# Pattern to output: date priority [category] - message
log4j.appender.bizDailyRolling.DatePattern='_'yyyy-MM-dd'.log'
log4j.appender.bizDailyRolling.layout=org.apache.log4j.PatternLayout
log4j.appender.bizDailyRolling.layout.ConversionPattern=%d [%t] %-5p [%F:%L] : %m%n
log4j.appender.bizDailyRolling.Encoding=UTF-8

Java類中使用： 

// 父級應用日誌

private static final Logger LOGGER = LoggerFactory.getLogger(AldNotifyController.class);

// 子級業務日誌

private static final Logger signDailyRolling = LoggerFactory.getLogger("bizDailyRolling");

LOGGER.info("向平臺業務資訊同步請求報文:{}",reqXml);
signDailyRolling.warn("signDailyRolling向平臺業務資訊同步請求報文:{}",reqXml);

log4j2.xml配置如下：

<!--父級應用日誌 RollingFile -->
<RollingRandomAccessFile name="RollingFile"
fileName="${LOG_HOME}/${APPLICATION_NAME}.log"
filePattern="${LOG_HOME}/${APPLICATION_NAME}_%d{yyyy-MM-dd-HH}.log">
<PatternLayout
pattern="%date{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%t] %F:%L - %msg%n" />
<Policies>
<!--<TimeBasedTriggeringPolicy modulate="true" interval="24"/> -->
<TimeBasedTriggeringPolicy interval="1" />
</Policies>
</RollingRandomAccessFile>

<!-- 子級業務日誌 GlobalBasicLogFile -->
<RollingFile name="GlobalBasicLogFile" fileName="${LOG_HOME}/global/basic.log"
filePattern="${LOG_HOME}/global/basic_%d{yyyy-MM-dd}.log">
<PatternLayout>
<Charset>UTF-8</Charset>
<Pattern>${LOG_PATTERN_BUSINESS}</Pattern>
</PatternLayout>
<Policies>
<!-- <SizeBasedTriggeringPolicy size="10MB"/> -->
<!-- 每天建立一個日誌檔案 -->
<TimeBasedTriggeringPolicy interval="1"/>
</Policies>

<DefaultRolloverStrategy>
<Delete basePath="${LOG_HOME}" maxDepth="2">
<IfFileName glob="basic_*.log"/>
<IfLastModified age="30d"/>
</Delete>
</DefaultRolloverStrategy>
</RollingFile>

</Appenders>

<!--Logger節點用來單獨指定日誌的形式，比如要為指定包下的class指定不同的日誌級別等。 -->
<!--然後定義loggers，只有定義了logger並引入的appender，appender才會生效 -->

<Loggers>
<logger name="org.springframework" level="INFO"></logger>
<logger name="org.apache.zookeeper" level="INFO"></logger>
<logger name="org.mybatis" level="INFO"></logger>
<logger name="com.aspire" level="INFO"></logger>

<!-- 子級業務日誌 -->
<logger name="GlobalBasicLogFile" level="DEBUG" additivity="false">
<appender-ref ref="ConsoleAppender"/>
<appender-ref ref="GlobalBasicLogFile"/>
</logger>

<root level="debug">
<appender-ref ref="Console" />
<appender-ref ref="RollingFile" />

</root>
</Loggers>