“log4net:错误XmlHierarchyConfigurator:找不到属性[evaluator]以在[log4net.Appender.RollingFileAppender]上设置对象”

Question

我从log4net配置中得到以下错误，即使在配置文件中提供了evaluator属性。你能帮个忙吗？

错误：

Log4net:错误XmlHierarchyConfigurator:找不到属性赋值器以在log4net.Appender.RollingFileAppender上设置对象

配置：

<?xml version="1.0"?> <configuration>   <log4net>
    <appender name="logFileError" type="log4net.Appender.RollingFileAppender,log4net">
      <file value="C:\Users\E0433988\Documents\Logs\Wrapper\Error.log"/>
      <appendToFile value="true"/>
      <maximumFileSize value="100KB"/>
      <maxSizeRollBackups value="2"/>
      <rollingStyle value="Date"/>
      <datePattern value="_yyyy_MM_dd"/>
      <maxSizeRollBackups value="30"/>
      <staticLogFileName value="true"/>
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="ERROR"/>
      </evaluator>
      <filter type="log4net.Filter.LevelMatchFilter">
        <levelToMatch value="ERROR"/>
      </filter>
      <filter type="log4net.Filter.DenyAllFilter"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %thread %logger - %message%newline"/>
      </layout>
    </appender>
    <appender name="logInfo" type="log4net.Appender.RollingFileAppender,log4net">
      <file value="C:\Users\E0433988\Documents\Logs\Wrapper\Info.log"/>
      <appendToFile value="true"/>
      <maximumFileSize value="100KB"/>
      <maxSizeRollBackups value="2"/>
      <rollingStyle value="Date"/>
      <datePattern value="_yyyy_MM_dd"/>
      <maxSizeRollBackups value="30"/>
      <staticLogFileName value="true"/>
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="INFO"/>
      </evaluator>
      <filter type="log4net.Filter.LevelMatchFilter">
        <levelToMatch value="INFO"/>
      </filter>
      <filter type="log4net.Filter.DenyAllFilter"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %thread %logger - %message%newline"/>
      </layout>
    </appender>
    <appender name="logDebug" type="log4net.Appender.RollingFileAppender,log4net">
      <file value="C:\Users\E0433988\Documents\Logs\Wrapper\Debug.log"/>
      <appendToFile value="true"/>
      <maximumFileSize value="100KB"/>
      <maxSizeRollBackups value="2"/>
      <rollingStyle value="Date"/>
      <datePattern value="_yyyy_MM_dd"/>
      <maxSizeRollBackups value="30"/>
      <staticLogFileName value="true"/>
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="DEBUG"/>
      </evaluator>
      <filter type="log4net.Filter.LevelMatchFilter">
        <levelToMatch value="DEBUG"/>
      </filter>
      <filter type="log4net.Filter.DenyAllFilter"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %thread %logger - %message%newline"/>
      </layout>
    </appender>
    <appender name="logWarn" type="log4net.Appender.RollingFileAppender,log4net">
        <file value="C:\Users\E0433988\Documents\Logs\Wrapper\Warn.log"/>
        <appendToFile value="true"/>
        <maximumFileSize value="100KB"/>
        <maxSizeRollBackups value="2"/>
        <rollingStyle value="Date"/>
        <datePattern value="_yyyy_MM_dd"/>
        <maxSizeRollBackups value="30"/>
        <staticLogFileName value="true"/>
        <evaluator type="log4net.Core.LevelEvaluator">
            <threshold value="WARN"/>
        </evaluator>
        <filter type="log4net.Filter.LevelMatchFilter">
            <levelToMatch value="WARN"/>
        </filter>
        <filter type="log4net.Filter.DenyAllFilter"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %-5level %thread %logger - %message%newline"/>
        </layout>
    </appender>
    <root>
      <level value="DEBUG"/>
      <appender-ref ref="logFileError"/>
      <appender-ref ref="logInfo"/>
      <appender-ref ref="logDebug"/>
      <appender-ref ref="logWarn"/>
    </root>   </log4net> </configuration>

Answer 1

只能在派生自BufferingAppenderSkeleton的附加器上配置evaluator：

• AdoNetAppender，
• BufferingForwardingAppender
• RemotingAppender
• SmtpAppender
• SmtpPickupDirAppender.

因为RollingFileAppender不是从BufferingAppenderSkeleton派生的，所以没有这样的属性需要配置。

要解决此问题，请将其从您的配置中删除。