我希望将 Info Level 及以上级别的日志发送到 XML appender,而将 Error/Fatal Level 级别的日志发送到 EventLog appender。
我了解到需要修改配置文件的根元素,但是语法让我很困惑。如何在配置文件中指定特定级别或级别范围的日志记录到正确的 appender 中?
以下是当前的配置:
<log4net>
<appender name="SomeXmlAppender" type="log4net.Appender.RollingFileAppender">
...
</appender>
<appender name="SomeEventLogAppender" type="log4net.Appender.EventLogAppender">
...
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="SomeXmlAppender" />
<appender-ref ref="SomeEventLogAppender" />
</root>
</log4net>
编辑:感谢@agileguy。那篇帖子确实包含了我所需的语法。现在的解决方案如下:
<log4net>
<appender name="SomeXmlAppender" type="log4net.Appender.RollingFileAppender">
...
<evaluator type="log4net.Core.LevelEvaluator">
<threshold value="INFO"/>
</evaluator>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="INFO" />
<acceptOnMatch value="true" />
</filter>
<filter type="log4net.Filter.DenyAllFilter" />
</appender>
<appender name="SomeEventLogAppender" type="log4net.Appender.EventLogAppender">
...
<evaluator type="log4net.Core.LevelEvaluator">
<threshold value="ERROR"/>
</evaluator>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<acceptOnMatch value="true" />
</filter>
<filter type="log4net.Filter.DenyAllFilter" />
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="SomeXmlAppender" />
<appender-ref ref="SomeEventLogAppender" />
</root>
</log4net>