log4j 不写入文件，而是写入控制台

Question

我正在基于 Linux 的系统中创建一个小型应用程序，我在其中使用 slf4j 库作为记录器

导入组织slf4j.Logger；导入组织。slf4j.Logger工厂；

我可以看到日志在控制台中可见，但没有附加到日志文件。

<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
    <param name="threshold" value="INFO" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="[%d{ABSOLUTE}][%-5p][%-10t]%m%n" />
    </layout>
</appender>






<!-- EXAMPLE logging setup NOTES: 1. files are written to "./logs/<filename>". 
    You must setup the environment so that ./logs is a symlink to the correct 
    location according to the EXAMPLE log standard. For example, "/opt/logs/". 
    If that's not possible, change the File setting in each appender appropriately. -->

<appender name="EXAMPLE_AUDIT" class="org.apache.log4j.RollingFileAppender">
    <param name="threshold" value="INFO" />
    <param name="File" value="./logs/audit.log" />
    <param name="MaxFileSize" value="128MB" />
    <param name="MaxBackupIndex" value="20" />
    <layout class="com.rsg.ova.logging.log4j.EXAMPLELayout">
        <param name="ConversionPattern" value="EXAMPLE_AUDIT" />
    </layout>
</appender>

<appender name="EXAMPLE_METRIC" class="org.apache.log4j.RollingFileAppender">
    <param name="threshold" value="DEBUG" />
    <param name="File" value="./logs/metric.log" />
    <param name="MaxFileSize" value="128MB" />
    <param name="MaxBackupIndex" value="10" />
    <layout class="com.rsg.ova.logging.log4j.EXAMPLELayout">
        <param name="ConversionPattern" value="EXAMPLE_METRIC" />
    </layout>
</appender>

<appender name="EXAMPLE_ERROR" class="org.apache.log4j.RollingFileAppender">
    <param name="threshold" value="ERROR" />    <!-- only WARN and ERROR are allowed in this log -->
    <param name="File" value="./logs/error.log" />
    <param name="MaxFileSize" value="128MB" />
    <param name="MaxBackupIndex" value="10" />
    <layout class="com.rsg.ova.logging.log4j.EXAMPLELayout">
        <param name="ConversionPattern" value="EXAMPLE_ERROR" />
    </layout>
</appender>

<appender name="EXAMPLE_DEBUG" class="org.apache.log4j.RollingFileAppender">
    <param name="threshold" value="DEBUG" />
    <param name="File" value="./logs/debug.log" />
    <param name="MaxFileSize" value="128MB" />
    <param name="MaxBackupIndex" value="20" />
    <layout class="com.rsg.ova.logging.log4j.EXAMPLELayout">
        <param name="ConversionPattern" value="EXAMPLE_DEBUG" />
    </layout>
</appender>


<logger name="com.rsg.EXAMPLE.audit" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_AUDIT" />
</logger>

<logger name="com.rsg.EXAMPLE.metrics" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_METRIC" />
</logger>

<logger name="com.rsg.EXAMPLE.error" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_ERROR" />
</logger>

<logger name="com.rsg.EXAMPLE.debug" additivity="false">
    <level value="info" />
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="EXAMPLE_DEBUG" />
</logger>


<root>
    <level value="DEBUG" />
    <appender-ref ref="EXAMPLE_DEBUG" />
    <appender-ref ref="CONSOLE" />

</root>

<logger name="org.openEXAMPLE.agcp.commonFunction.input"
    additivity="false">
    <level value="INFO" />
    <appender-ref ref="CONSOLE" />
</logger>

<logger name="org.openEXAMPLE.agcp.commonFunction.output"
    additivity="false">
    <level value="INFO" />
    <appender-ref ref="CONSOLE" />

</logger>

<logger name="org.openEXAMPLE.agcp.commonFunction.error"
    additivity="false">
    <level value="DEBUG" />
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="EXAMPLE_ERROR" />
</logger>

<!-- The EXAMPLE logging standard has four specific classes of logging that 
    are unrelated to subsystem logger names. If you want them activated, uncomment 
    this block. -->
<logger name="com.rsg.EXAMPLE.audit" additivity="false">
    <level value="info" />
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="EXAMPLE_AUDIT" />
</logger>

<logger name="com.rsg.EXAMPLE.metrics" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_METRIC" />
</logger>

<logger name="com.rsg.EXAMPLE.error" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_ERROR" />
</logger>

<logger name="com.rsg.EXAMPLE.debug" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_DEBUG" />
</logger>


<logger name="com.rsg.ova.apiClient.http.HttpClient" additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_ERROR" />
    <appender-ref ref="CONSOLE" />
</logger>

<logger name="com.rsg.ova.roman.client.impl.romanSimplerBatchPublisher"
    additivity="false">
    <level value="info" />
    <appender-ref ref="EXAMPLE_ERROR" />
    <appender-ref ref="CONSOLE" />
</logger>

Answer 1

我检查了您的 logback.xml 文件配置。似乎根标签（"configuration"）丢失了。你可以添加并检查它吗？

参考https://logback.qos.ch/manual/configuration.html

Answer 2

您的 xml 文件中似乎遗漏了根标记。请找到以下代码将日志写入文件。

<appender name="file" class="org.apache.log4j.RollingFileAppender">
    <param name="append" value="false" />
    <param name="maxFileSize" value="128MB" />
    <param name="maxBackupIndex" value="20" />
    <param name="file" value="./logs/audit.log" />
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
    </layout>
</appender>

<root>
    <level value="INFO" />
    <appender-ref ref="file" />
</root>

Answer 3

问题中显示的配置是log4j 1.2格式。

log4j2.xml 的格式不同。它是基于插件的，所以你不需要再指定附加程序的 class 名称。

请参阅 Log4j2 manual。它有许多示例配置。

Answer 4

已确定我必须包含 sl4j-log4j 桥 jar 才能解决上述问题，我包含了 log4j 和 sl4j 单独的 jar，因此我看不到任何编译错误，但桥没有实现。

删除单个 jar 并添加 bridge jar 后问题已解决。

log4j 不写入文件，而是写入控制台

log4j not writing into file but its writing into console

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