RollingFile Appender Log4j2 不打印行号

Question

我正在使用具有以下依赖项的 log4j2 ::

   <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.0-rc1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.0-rc1</version>
    </dependency>

我正在使用以下配置::

    <?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">

    <Properties>
        <Property name="LOGGER_HOME">/logs</Property>
    </Properties>

    <Appenders>

        <RollingFile name="application" fileName="${LOGGER_HOME}/application.log"
            filePattern="${LOGGER_HOME}/application.%d{yyyy-MM-dd}_%i.log">

            <PatternLayout pattern="%d{ISO8601}{GMT} %-5p %C{2} (%F:%L) - %m%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="1 GB" />
            </Policies>

        </RollingFile>

        <RollingFile name="framework" fileName="${LOGGER_HOME}/em-logs/framework.log"
            filePattern="${LOGGER_HOME}/framework.%d{yyyy-MM-dd}_%i.log">

            <PatternLayout pattern="%d{ISO8601}{GMT} %-5p %C{2} (%F:%L) - %m%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="1 GB" />
            </Policies>
        </RollingFile>

        <Console name="out" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{ISO8601}{GMT} %-5p %C{2} (%F:%L) - %m%n" />
        </Console>

        <Async name="asyncApplication">
            <AppenderRef ref="application" />
        </Async>

        <Async name="asyncFramework">
            <AppenderRef ref="framework" />
        </Async>


    </Appenders>


    <Loggers>

        <Logger name="com.memorynotfound.logging" level="debug"
            includeLocation="true">
            <AppenderRef ref="asyncApplication" />
        </Logger>

    <Root level="debug" includeLocation="true">
            <AppenderRef ref="asyncApplication"></AppenderRef>
        </Root>

        <Logger name="org.axonframework" level="info" additivity="false"
            includeLocation="true">
            <AppenderRef ref="asyncFramework" />
        </Logger>

        <Root level="error" includeLocation="true">
            <AppenderRef ref="out" />
        </Root>

    </Loggers>


</Configuration>

但是我在控制台上收到以下格式的日志

2015-08-20 14:29:41,613 DEBUG logging.LoggerExample (LoggerExample.java:11) - This will be printed on debug

在滚动文件中，我得到以下模式，其中缺少行号 ::

2015-08-20 14:29:41,613 DEBUG ? () - This will be printed on debug

我已经疯了，因为打印行号似乎没有任何效果我也遵循了官方 log4j2 link Log4j2 Migration 但结果仍然与上面相同。如果有人有任何解决方案，请告诉我。

Answer 1

在这里我找到了解决方案:: Log4j2 AsyncLogger with rolling file appender not showing file line number

然后我将 appender 引用更改为直接指向 RollingFile 名称而不是 <Async name>，它现在可以正确显示行号。不确定为什么会这样，我会很快找到 post 原因。

所以改了下面的::

<Logger name="com.memorynotfound.logging" level="debug"
            includeLocation="true">
            <AppenderRef ref="asyncApplication" />
        </Logger>

到

<Logger name="com.memorynotfound.logging" level="debug"
        includeLocation="true">
        <AppenderRef ref="application" />
    </Logger>

Answer 2

出于性能的考虑，async logger默认关闭了includeLocation。如果要打印行号和 class 名称，则需要添加 <Async name="asyncFramework" includeLocation="true">

仅供参考 https://logging.apache.org/log4j/2.x/manual/layouts.html#LocationInformation

Answer 3

文档描述了不打印行号的原因。它说您可以通过指定 includeLocation="true" 来覆盖记录器或异步附加程序配置中的默认行为。但是我没有解决打印后不打印行号的问题。可能是没看懂什么意思，放错地方了

我的解决方案是在 Log4j2 PatternLayout 模式中添加 %L。我的 Log4j2.xml 如下：

    <?xml version="1.0" encoding="UTF-8"?>
    <Configuration status="WARN" monitorInterval="30">
        <Properties>
            <Property name="LOG_HOME">./logs</Property>
        </Properties>

        <Console name="Console" target="SYSTEM_OUT">
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36}:%L - %msg%n" />
        </Console>

        <RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/pinche_quartz.log"
                     filePattern="${LOG_HOME}/test.log-%d{yyyy-MM-dd}.log">
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36}:%L - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
            </Policies>
        </RollingFile>

        <RollingFile name="RollingFileError" fileName="${LOG_HOME}/error/pinche_quartz-error.log"
                     filePattern="${LOG_HOME}/error/pinche_quartz-error.log-%d{yyyy-MM-dd}.log">
            <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36}:%L - %msg%n" />
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
            </Policies>
        </RollingFile>
    </Appenders>

    <Loggers>
        <root level="all">
            <appender-ref ref="Console"/>
            <appender-ref ref="RollingFileInfo"/>
            <appender-ref ref="RollingFileError"/>
        </root>
    </Loggers>

</Configuration>

希望能帮到你

Log4j2 文档https://logging.apache.org/log4j/2.x/manual/layouts.html#LocationInformation

RollingFile Appender Log4j2 不打印行号

RollingFile Appender Log4j2 not printing Line number

logging

log4j2

line-numbers

rollingfileappender

pattern-layout