Log4Net StringMatchFilter没有过滤任何东西

Question

我正在记录nHibernate生成的所有SQL,因为我们有一个奇怪的问题.仅此一项就会产生巨大的日志,所以我试图通过尝试仅记录包含特定ID的行来缩短它们.看起来好像一切都将通过.这有什么看起来很奇怪吗？

    <appender name="RollingFile" type="log4net.Appender.RollingFileAppender,log4net" >

        <param name="File" value="nHibernate.txt" />
        <param name="AppendToFile" value="true" />
        <param name="DatePattern" value="yyyy.MM.dd" />

        <layout type="log4net.Layout.PatternLayout,log4net">
            <conversionPattern value="%d %p %m%n" />
        </layout>

        <filter type="log4net.Filter.StringMatchFilter">
            <stringToMatch value="5764" />
            <acceptOnMatch value="true" />
        </filter>

    </appender>

    <logger name="NHibernate.SQL" additivity="false">
        <level value="DEBUG" />
        <appender-ref ref="RollingFile" />
    </logger>

Answer 1

事实证明你需要添加这个代码:

<filter type="log4net.Filter.DenyAllFilter" />

完整块看起来像这样:

    <appender name="RollingFile" type="log4net.Appender.RollingFileAppender,log4net" >

        <param name="File" value="nHibernate.txt" />
        <param name="AppendToFile" value="true" />
        <param name="DatePattern" value="yyyy.MM.dd" />

        <layout type="log4net.Layout.PatternLayout,log4net">
            <conversionPattern value="%d %p %m%n" />
        </layout>

        <filter type="log4net.Filter.StringMatchFilter">
            <stringToMatch value="5764" />
            <acceptOnMatch value="true" />
        </filter>

        <!-- need this here! -->
        <filter type="log4net.Filter.DenyAllFilter" />

    </appender>

    <logger name="NHibernate.SQL" additivity="false">
        <level value="DEBUG" />
        <appender-ref ref="RollingFile" />
    </logger>