NLog 和 Common.Logging 的噩梦

Question

所以我已经尝试了我能找到的一切让这两个一起玩。

我已经安装了 nuget 包 Common.Logging.NLog20，

我的配置看起来像:

<configSections>
    <sectionGroup name="common">
        <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />
    </sectionGroup>
    <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog20" />
</configSections>
<common>
    <logging>
        <factoryAdapter type="Common.Logging.NLog.NLogLoggerFactoryAdapter, Common.Logging.NLog20">
            <arg key="configType" value="INLINE" />
        </factoryAdapter>
    </logging>
</common>
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
            <assemblyIdentity name="NLog" publicKeyToken="5120e14c03d0593c" culture="neutral" />
            <bindingRedirect oldVersion="0.0.0.0-2.1.0.0" newVersion="2.1.0.0" />
        </dependentAssembly>
        <dependentAssembly>
            <assemblyIdentity name="Common.Logging" publicKeyToken="af08829b84f0328e" culture="neutral" />
            <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
        </dependentAssembly>
    </assemblyBinding>
</runtime>

我正在使用 nuget NLog.Configuration 包，因此我的 nlog 配置位于一个名为 NLog.config 的单独文件中:

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  internalLogFile="nlog.ERRORS.txt" internalLogLevel="Error" >

<!-- 
See http://nlog-project.org/wiki/Configuration_file 
for information on customizing logging rules and outputs.
-->
<targets>
    <!-- add your targets here -->
    <target xsi:type="File" name="log" keepFileOpen="true"
            fileName="${basedir}/log_${date:format=yyyyMMdd}.txt"
            layout="${longdate} ${level:uppercase=true:padding=5} - ${logger:shortName=true} - ${message} ${exception:format=tostring}" />
    <target name="log_errors_memory" xsi:type="Memory"
            layout="${longdate} ${level:uppercase=true:padding=5} - ${logger:shortName=true} - ${message} ${exception:format=tostring}" />
    <target name="log_all_memory" xsi:type="Memory"
            layout="${longdate} ${level:uppercase=true:padding=5} - ${logger:shortName=true} - ${message} ${exception:format=tostring}" />
</targets>

<rules>
    <!-- add your logging rules here -->
    <logger name="*" minlevel="Trace" writeTo="log" />
    <logger name="*" minlevel="Trace" writeTo="log_all_memory" />
    <logger name="*" minlevel="Error" writeTo="log_errors_memory" />
</rules>
</nlog>

我尝试将 FactoryAdaptor 更改为 NLog、NLog2 和 NLog20，我尝试更改绑定(bind)重定向，我尝试将 Common.Logging 更新到版本 2.2.0.0。无论我做什么，我都会得到异常(exception):

{"Failed obtaining configuration for Common.Logging from configuration section 'common/logging'."}

Inner Exception:
{"An error occurred creating the configuration section handler for common/logging: Type Common.Logging.NLog.NLogLoggerFactoryAdapter, Common.Logging.NLog20, Version=2.2.0.0, Culture=neutral, PublicKeyToken=af08829b84f0328e does not implement Common.Logging.ILoggerFactoryAdapter\r\nParameter name: factoryAdapterType\r\nActual value was Common.Logging.NLog.NLogLoggerFactoryAdapter. (D:\\Development\\Code\\DotNet\\vs2013\\exe\\CommandLine\\PSVImporter\\FidessaPSVImport.Test\\bin\\Debug\\FidessaPSVImport.Test.dll.config line 17)"}

我错过了什么？这不应该这么难开始工作。

Answer 1

这是一种卑鄙的方法，可以为您节省很多麻烦。 Common.Logging.NLogXX 附带的适配器 NLogLoggerFactoryAdapter 没有什么特别之处，只是为您设置了 NLog。这是大多数人可以自己做的事情。

换句话说，如果你已经设置了 NLog，你需要做的就是将 Common.Logging 连接到 NLog。这可以通过编写一个简单的工厂来完成，该工厂将创建如下所示的 NLog Loggers:

public class MyAdapter : AbstractCachingLoggerFactoryAdapter
{
    protected override ILog CreateLogger(string name)
    {
        return (ILog)typeof(NLogLogger).GetConstructor(
            BindingFlags.NonPublic | BindingFlags.Instance, null, new Type[] { typeof(NLog.Logger) }, null)
            .Invoke(new object[] { NLog.LogManager.GetLogger(name) });
    }
}

public static void ConfigureLogging()
{
    Common.Logging.LogManager.Adapter = new MyAdapter();
}