c#中带过滤器的log4net纯代码配置 [英] log4net pure code configuration with filter in c#

问题描述

我试图纯粹通过代码来配置 Log4Net，但是当我使用最少的配置进行配置时，我被来自 NHibernate 和流畅界面的日志消息淹没了.

I am trying to configure Log4Net purely by code, but when I did with a minimal configuration, I was flooded by logging messages from NHibernate and the fluent interface.

所以，我想做的很简单.告诉 Log4Net 只显示我的单个类的日志消息.我玩了一会儿，但想不通...

So, what I am trying to do is simple. Tell Log4Net to show me only log messages of my single class. I toyed around a little bit, but can't figure it out...

谁能帮忙，我想下面的代码说明了我的想法:

Can anyone help, I think the following code illustrates my idea:

var filter = new log4net.Filter.LoggerMatchFilter();
filter.LoggerToMatch = typeof(DatabaseDirectory).ToString();
filter.AcceptOnMatch = false;

var x = new log4net.Appender.ConsoleAppender();
x.Layout = new log4net.Layout.SimpleLayout();
x.AddFilter(filter);

log4net.Config.BasicConfigurator.Configure(x);

好的，谢谢你的帮助，但这里肯定有问题.但我离得更近了.我尝试了 XML 配置，其中包含更多文档.我设法使用以下 XML 配置实现了预期的结果.上面的纯代码"版本肯定存在一些配置错误.

Ok, thanks for your help, but there must be some issue here. But I get closer. I tried the XML configuration, which has much more documentation. And I managed to achieve the desired result using the following XML configuration. There must be some misconfiguration in the "pure code" version above.

以下 XML 配置提供了正确"的输出，这与上面代码中的配置不同.有人看出区别了吗?

The following XML configuration provides the "correct" output, which is not the same than the config in code above. Anybody sees the difference?

<log4net>
<root>
  <level value="DEBUG" />
  <appender-ref ref="ConsoleAppender" />
</root>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
  <filter type="log4net.Filter.LoggerMatchFilter">
    <loggerToMatch value="Examples.FirstProject.Entities.DatabaseDirectory"/>
  </filter>
  <filter type="log4net.Filter.DenyAllFilter" />
  <layout type="log4net.Layout.PatternLayout">
    <conversionPattern value="[%C.%M] %-5p %m%n" />
  </layout>
</appender>

推荐答案

我想通了.. 有时候，写下来让你大开眼界...

I figured it out.. Sometimes, just writing it down opens your eyes...

        var filter = new log4net.Filter.LoggerMatchFilter();
        filter.LoggerToMatch = typeof(DatabaseDirectory).ToString();
        filter.AcceptOnMatch = true;

        var filterDeny = new log4net.Filter.DenyAllFilter();


        var x = new log4net.Appender.ConsoleAppender();
        x.Layout = new log4net.Layout.SimpleLayout();
        x.AddFilter(filter);
        x.AddFilter(filterDeny);

        log4net.Config.BasicConfigurator.Configure(x);

看看缺少什么:-)denyALL 过滤器！！

See what was missing :-) The denyALL filter!!

更多代码示例:

    public static void AllToConsoleSetup()
    {
        var x = new log4net.Appender.ConsoleAppender { Layout = new log4net.Layout.SimpleLayout() };
        log4net.Config.BasicConfigurator.Configure(x);
        SetupDone = true;
    }


    public static void ShowOnlyLogOf(Type t)
    {
        var filter = new log4net.Filter.LoggerMatchFilter {LoggerToMatch = t.ToString(), AcceptOnMatch = true};
        var filterDeny = new log4net.Filter.DenyAllFilter();
        var x = new log4net.Appender.ConsoleAppender {Layout = new log4net.Layout.SimpleLayout()};
        x.AddFilter(filter);
        x.AddFilter(filterDeny);

        log4net.Config.BasicConfigurator.Configure(x);
        SetupDone = true;
    }

真的很丑但工作(它搞砸了突出显示，不要错过最后几行):

Really UGLY but working (it screws up the highlighting, do not miss the last lines):

        public static void DefaultSetup()
    {
       // AllToConsoleSetup();
        XmlConfigurator.Configure(XmlSetup());
      // DbConfig();

    }


    private static Stream XmlSetup()
    {
        const string x = @" <log4net>
<root>

  <level value=""ALL"" />
  <appender-ref ref=""AdoNetAppender"">

  </appender-ref>
</root>


<appender name=""AdoNetAppender"" type=""log4net.Appender.AdoNetAppender"">
  <bufferSize value=""1"" />
  <connectionType value=""System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" />
  <connectionString value=""data source=Christian-PCSQLEXPRESS;initial catalog=log4net_2;integrated security=false;persist security info=True;User ID=log4net;Password=XXXX"" />
  <commandText value=""INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)"" />
  <parameter>
    <parameterName value=""@log_date"" />
    <dbType value=""DateTime"" />
    <layout type=""log4net.Layout.RawTimeStampLayout"" />
  </parameter>
  <parameter>
    <parameterName value=""@thread"" />
    <dbType value=""String"" />
    <size value=""655"" />
    <layout type=""log4net.Layout.PatternLayout"">
      <conversionPattern value=""%thread"" />
    </layout>
  </parameter>
  <parameter>
    <parameterName value=""@log_level"" />
    <dbType value=""String"" />
    <size value=""50"" />
    <layout type=""log4net.Layout.PatternLayout"">
      <conversionPattern value=""%level"" />
    </layout>
  </parameter>
  <parameter>
    <parameterName value=""@logger"" />
    <dbType value=""String"" />
    <size value=""655"" />
    <layout type=""log4net.Layout.PatternLayout"">
      <conversionPattern value=""%logger"" />
    </layout>
  </parameter>
  <parameter>
    <parameterName value=""@message"" />
    <dbType value=""String"" />
    <size value=""4000"" />
    <layout type=""log4net.Layout.PatternLayout"">
      <conversionPattern value=""%message"" />
    </layout>
  </parameter>
  <parameter>
    <parameterName value=""@exception"" />
    <dbType value=""String"" />
    <size value=""2000"" />
    <layout type=""log4net.Layout.ExceptionLayout"" />
  </parameter>
  <filter type=""log4net.Filter.LoggerMatchFilter"">
    <param name=""LoggerToMatch"" value=""Ruppert"" />
  </filter>
  <filter type=""log4net.Filter.DenyAllFilter"">
  </filter>
</appender>
</log4net>";
        return new MemoryStream(ASCIIEncoding.Default.GetBytes(x));
    }

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