OwlFocus

log4j additivity 属性

发表于 | 分类于

log4j additivity属性

它是子Logger 是否继承父Logger的输出源（appender）的标志位具体说，默认情况下子Logger会继承父Logger的appender，也就是说子Logger会在父Logger的appender里输出。若是additivity设为false，则子Logger只会在自己的appender里输出，而不会在父Logger的appender里输出。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
<Properties>
    <Property name="logDir">${log4j:configParentLocation}/../logs/</Property>
    <Property name="debugFileName">debug</Property>
    <Property name="infoFileName">info</Property>
    <Property name="warnFileName">warn</Property>
    <Property name="errorFileName">error</Property>
    <Property name="businessFileName">business</Property>
</Properties>
<Appenders>
    <RollingFile name="info-out" fileName="${log4j:configParentLocation}/../logs/info.log"
        filePattern="${log4j:configParentLocation}/../logs/info-%d{yyyy-MM-dd}-%i.log">
        <PatternLayout pattern="%d{yyyy.MM.dd HH:mm:ss} %c %L - %m%n" />
        <SizeBasedTriggeringPolicy size="10240KB" />
        <DefaultRolloverStrategy max="99" />
        <Filters>
            <ThresholdFilter level="ERROR" onMatch="DENY" onMismatch="NEUTRAL" />
            <ThresholdFilter level="WARN" onMatch="DENY" onMismatch="NEUTRAL" />
            <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY" />
        </Filters>
    </RollingFile>
    <RollingFile name="business-out" fileName="${logDir}/${businessFileName}.log"
                        filePattern="${logDir}/backups/business/$${date:yyyy-MM}/${businessFileName}-%d{yyyy-MM-dd}-%i.log">
                        <PatternLayout pattern="%d{yyyy.MM.dd HH:mm:ss} %c %L - %m%n" />
                        <SizeBasedTriggeringPolicy size="10240KB" />
                        <DefaultRolloverStrategy max="200" />
                        <Filters>
                                <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY" />
                        </Filters>
                </RollingFile>
    </Appenders>
<Loggers>
    <Root level="INFO">        
        <AppenderRef ref="info-out" />
    </Root>
    <Logger name="business-info" additivity="false" level="INFO">
            <AppenderRef ref="business-out" level="INFO" />
    </Logger
 </Loggers>

将business-info的Logger中additivity=”false”配置成false,再输出日志时，business-info日志就不会在info-out中重复输出。