log4net 彩色控制台不工作

Question

我将 log4net 用于两个不同的日志文件和彩色控制台，文件工作正常但控制台总是空的。

在我的 app.config 中

  <log4net>
    <root>
      <priority value="ALL" />
      <appender-ref ref="ConsoleOutAppender" />
      <appender-ref ref="PortalLoggerAppender" />
      <appender-ref ref="ApplicationLoggerAppender" />
    </root>

    <appender name="ConsoleOutAppender" type="log4net.Appender.ColoredConsoleAppender">
 <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="ApplicationLogger" />
      </filter>
      <mapping>
        <level value="ERROR" />
        <foreColor value="Red, HighIntensity" />
      </mapping>
      <mapping>
        <level value="WARN" />
        <foreColor value="Yellow, HighIntensity" />
      </mapping>
      <mapping>
        <level value="INFO" />
        <foreColor value="Cyan" />
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <foreColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{dd/MM HH:mm:ss} [%level] %newline%message%newline" />
      </layout>
    </appender>

    <appender name="PortalLoggerAppender" type="log4net.Appender.RollingFileAppender">
      <file type="log4net.Util.PatternString" value="Results/PortalLog_%property{DateTime}_app.log" />
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="PortalLogger" />
      </filter>
      <encoding value="utf-8" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <maxSizeRollBackups value="-1" />
      <maximumFileSize value="20MB" />
      <countDirection value="1" />
      <datePattern value="yyyyMMdd" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{dd/MM HH:mm:ss} [%level] %newline%message%newline" />
      </layout>
    </appender>

    <appender name="ApplicationLoggerAppender" type="log4net.Appender.RollingFileAppender">
      <file type="log4net.Util.PatternString" value="Results/ApplicationLog_%property{DateTime}_app.log" />
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="ApplicationLogger" />
      </filter>
      <encoding value="utf-8" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <maxSizeRollBackups value="-1" />
      <maximumFileSize value="20MB" />
      <countDirection value="1" />
      <datePattern value="yyyyMMdd" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{dd/MM HH:mm:ss} [%level] %newline%message%newline" />
      </layout>
    </appender>

    <logger name="PortalLogger" additivity="false">
      <level value="ALL"/>
      <appender-ref ref="PortalLoggerAppender"/>
    </logger>

    <logger name="ApplicationLogger" additivity="false">
      <level value="ALL"/>
      <appender-ref ref="ApplicationLoggerAppender"/>
    </logger>


    </log4net>

知道为什么 log4net 没有打印到控制台吗？ 我希望应用程序记录器也将写入控制台。 提前谢谢你。

Answer 1

好的，我知道了，我刚刚将控制台附加程序添加到应用程序记录器中：)

 <logger name="ApplicationLogger" additivity="false">
      <level value="ALL"/>
      <appender-ref ref="ApplicationLoggerAppender"/>
      <appender-ref ref="ConsoleOutAppender"/>
    </logger>

Answer 2

您已将additivity 专门设置为false，as per the docs 表示：

未使用在此记录器的祖先中找到的附加程序

意味着您在顶部的root 中配置的那些将被忽略。删除 additivity 或将其设置为 true（其默认值），或者也将您的控制台附加程序显式添加到此记录器。

Answer 3

要使用 log4net 彩色控制台，请使用以下步骤：

1. 安装以下 nuget：

安装包 Log4Net_Logging -Version 1.1.0

1. 使用下面的 log4net.config

      <appender name="Console" type="log4net.Appender.ManagedColoredConsoleAppender">
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date %-5level: %message%newline" />
        </layout>
        <mapping>
          <level value="FATAL" />
          <foreColor value="White" />
          <backColor value="Red" />
        </mapping>
        <mapping>
          <level value="ERROR" />
          <foreColor value="Red" />
        </mapping>
        <mapping>
          <level value="WARN" />
          <foreColor value="Yellow" />
        </mapping>
        <mapping>
          <level value="INFO" />
          <foreColor value="Gray" />
          <backColor value="Black" />
        </mapping>
        <mapping>
          <level value="DEBUG" />
          <foreColor value="DarkBlue" />
          <backColor value="Gray" />
        </mapping>
      </appender>

      <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
        <file value="Log.txt" />
        <appendToFile value="false" />
        <rollingStyle value="Size" />
        <maxSizeRollBackups value="10" />
        <maximumFileSize value="50MB" />
        <staticLogFileName value="true" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date %-5level[%logger]: %message%newline" />
        </layout>
      </appender>

      <root>
        <level value="INFO" />
        <appender-ref ref="Console" />
        <appender-ref ref="RollingFileAppender" />
      </root>
    </log4net>

1. 在控制器中设置

        {
            Log.SetUp(Assembly.GetEntryAssembly(), "log4net.config");
        }

4. 开始记录：

 [HttpGet]
        public ActionResult<IEnumerable<string>> Get()
        {


            Log.Info(this, "This is Info logging");
            Log.Debug(this, "This is Debug logging");
            Log.Error(this, "This is Error logging");
            Log.War(this, "This is warning");


            return new string[] { "value1", "value2" };
        }