logging - Log4Net多个记录器

Question

首先，我在其他主题（最相似的是Log4Net: Multiple loggers）中看到了很多答案和技巧，但是没有适用的答案。

我想让2个记录器具有不同的文件附加器，并限制每个记录器写入根记录器。这是控制台应用程序。整个代码如下：

using System;
using System.Diagnostics;
using System.Linq;
using log4net;

namespace Test_log4net
{
class Program
{
    static void Main(string[] args)
    {
        log4net.Config.XmlConfigurator.Configure();

        ILog logger = LogManager.GetLogger("Async");
        logger.Info("started async");
        Console.WriteLine("Logger: {0}", (logger as log4net.Core.LogImpl).Logger.Name);
        Console.WriteLine("Appenders: {0}", string.Join(", ", (logger as log4net.Core.LogImpl).Logger.Repository.GetAppenders().ToList().Select(appendr => appendr.Name)));


        ILog logger2 = LogManager.GetLogger("Sync");
        logger2.Info("started sync"); //changed: from logger -> to logger2 on 10/21/2014
        Console.WriteLine("Logger: {0}", (logger2 as log4net.Core.LogImpl).Logger.Name);
        Console.WriteLine("Appenders: {0}", string.Join(", ", (logger2 as log4net.Core.LogImpl).Logger.Repository.GetAppenders().ToList().Select(appendr => appendr.Name)));

        Console.ReadKey();
    }       
}
}

和App.config文件：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<log4net>
    <root>
        <level value="All"/>
    </root>

    <appender name="FileInfoAppenderA" type="log4net.Appender.RollingFileAppender">
        <file value="D:\\temp\\AsyncTest.log"/>
        <filter type="log4net.Filter.LevelRangeFilter">
            <levelMin value="DEBUG"/>
            <levelMax value="FATAL"/>
        </filter>
        <appendToFile value="true"/>
        <rollingStyle value="Size"/>
        <maxSizeRollBackups value="10"/>
        <maximumFileSize value="100MB"/>
        <staticLogFileName value="true"/>
        <datePattern value="yyyyMMdd"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%d - %m%n"/>
        </layout>
    </appender>

    <appender name="FileInfoAppenderS" type="log4net.Appender.RollingFileAppender">
        <file value="D:\\temp\\SyncTest.log"/>
        <filter type="log4net.Filter.LevelRangeFilter">
            <levelMin value="DEBUG"/>
            <levelMax value="FATAL"/>
        </filter>
        <appendToFile value="true"/>
        <rollingStyle value="Size"/>
        <maxSizeRollBackups value="10"/>
        <maximumFileSize value="100MB"/>
        <staticLogFileName value="true"/>
        <datePattern value="yyyyMMdd"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%d - %m%n"/>
        </layout>
    </appender>

    <logger Name="Sync" additivity="false">
        <level value="INFO"/>
        <appender-ref ref="FileInfoAppenderS"/>
    </logger>

    <logger Name="Async" additivity="false">
        <level value="INFO"/>
        <appender-ref ref="FileInfoAppenderA"/>
    </logger>

</log4net>
</configuration>

和控制台输出：

Logger: Async
Appenders: FileInfoAppenderA
Logger: Sync
Appenders: FileInfoAppenderA

文件已创建，但是它们都是空的。
当我在根目录中指定附加程序时，例如：

<root>
    <level value="All"/>
    <appender-ref ref="FileInfoAppenderA"/>
    <appender-ref ref="FileInfoAppenderS"/>
</root>

然后，控制台：

log4net:ERROR [RollingFileAppender] Attempted to append to closed appender named [FileInfoAppenderS]
Logger: Async
Appenders: FileInfoAppenderA, FileInfoAppenderS
Logger: Sync
Appenders: FileInfoAppenderA, FileInfoAppenderS

并且仅在AsyncTest.log中：

2014-04-11 17:26:58,142 - started async
2014-04-11 17:26:58,151 - started sync

我做错了什么？

UPD（10/21/2014）：通过Nuget提供的最新log4net，我具有以下控制台输出：

Logger: Async
Appenders: FileInfoAppenderA
Logger: Sync
Appenders: FileInfoAppenderA

并且两个文件（AsyncTest.log，SyncTest.log）都是空的。

UPD（08/4/2015）：解决方案是在设置log4net部分中所有内容的属性时使用小写字母。因此，我只应该在app.config中更改以下几行：

......
<logger name="Sync" additivity="false">
......
<logger name="Async" additivity="false">
......

注意区别：属性“名称”为小写。

Answer 1

您的示例中有几种错别字。首先是您不关闭配置标签，而为什么只进入一个文件，是因为您调用了：

logger.Info("started async");

然后您出乎意料地做到了：

logger.Info("started sync");

您实际上不会登录，因此不会写入第二个文件。

在控制台中，我从您的代码中得到：

Logger: Async
Appenders: FileInfoAppenderS, FileInfoAppenderA
Logger: Sync
Appenders: FileInfoAppenderS, FileInfoAppenderA

对于将来的信息，您通过将加性设置为false来正确完成操作，因为这意味着记录器将不会从根记录器继承。至于声明：


我想让2个记录器具有不同的文件附加器，并限制每个记录器写入根记录器


我不明白。例如，如果您希望记录器在拥有控制台附加程序的root记录器中写入这些文件，则只需删除可加性，它们就会写入控制台和自己的文件。还经过测试，效果很好。

我已阅读您的评论。现在，我添加我正在使用的代码并获得所需的代码：

class Program
{
    static void Main(string[] args)
    {
        log4net.Config.XmlConfigurator.Configure();

        ILog logger = LogManager.GetLogger("Async");
        logger.Info("started async");
        Console.WriteLine("Logger: {0}", (logger as log4net.Core.LogImpl).Logger.Name);
        Console.WriteLine("Appenders: {0}", string.Join(", ", (logger as log4net.Core.LogImpl).Logger.Repository.GetAppenders().ToList().Select(appendr => appendr.Name)));


        ILog logger2 = LogManager.GetLogger("Sync");
        logger2.Info("started sync");
        Console.WriteLine("Logger: {0}", (logger2 as log4net.Core.LogImpl).Logger.Name);
        Console.WriteLine("Appenders: {0}", string.Join(", ", (logger2 as log4net.Core.LogImpl).Logger.Repository.GetAppenders().ToList().Select(appendr => appendr.Name)));

        Console.ReadKey();
    }
}

和app.config：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <log4net>
    <appender name="FileInfoAppenderA" type="log4net.Appender.RollingFileAppender">
      <file value="C:\\temp\\AsyncTest.log"/>
      <filter type="log4net.Filter.LevelRangeFilter">
        <levelMin value="DEBUG"/>
        <levelMax value="FATAL"/>
      </filter>
      <appendToFile value="true"/>
      <rollingStyle value="Size"/>
      <maxSizeRollBackups value="10"/>
      <maximumFileSize value="100MB"/>
      <staticLogFileName value="true"/>
      <datePattern value="yyyyMMdd"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%d - %m%n"/>
      </layout>
    </appender>

      <appender name="FileInfoAppenderS" type="log4net.Appender.RollingFileAppender">
        <file value="C:\\temp\\SyncTest.log"/>
        <filter type="log4net.Filter.LevelRangeFilter">
          <levelMin value="DEBUG"/>
          <levelMax value="FATAL"/>
        </filter>
        <appendToFile value="true"/>
        <rollingStyle value="Size"/>
        <maxSizeRollBackups value="10"/>
        <maximumFileSize value="100MB"/>
        <staticLogFileName value="true"/>
        <datePattern value="yyyyMMdd"/>
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%d - %m%n"/>
        </layout>
      </appender>

    <root>
      <level value="INFO"/>
    </root>

    <logger name="Sync" additivity="false">
      <level value="INFO"/>
      <appender-ref ref="FileInfoAppenderS"/>
    </logger>

    <logger name="Async" additivity="false">
      <level value="INFO"/>
      <appender-ref ref="FileInfoAppenderA"/>
    </logger>
  </log4net>
</configuration>

Log4net版本：带有.NET 4.0的1.2.13.0
请告诉我您是否想要的东西。