来自程序集属性的 Log4net 配置不加载配置文件

Question

我的 bin 目录中有以下文件 Log4net.config：

<?xml version="1.0" encoding="utf-8" ?>
<log4net xmlns="urn:log4net">
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
        <param name="file" value="MyLogFile.log"/>
        <param name="appendToFile" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <param name="ConversionPattern" value="%date (%logger) [%5level] - %message" />
        </layout>
    </appender>
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
        <layout type="log4net.Layout.PatternLayout">
            <param name="ConversionPattern" value="%date (%logger) [%5level] - %message" />
        </layout>
    </appender>
    <root>
        <level value="DEBUG" />
        <appender-ref ref="FileAppender" />
        <appender-ref ref="ConsoleAppender"/>
    </root>
    <logger name="NHibernate" additivity="false">
        <level value="WARN"/>
    </logger>
</log4net>

以及我的 AssemblyInfo.cs 文件中的以下代码：

using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyTitle("My Project")]
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Log4net.config", Watch = true)]

当我运行程序时，我得到以下 log4net 调试输出：

log4net: log4net assembly [log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821]. Loaded from [D:\Data\Projects\Active\Clients\MyProject\src\MyProject.Importer\bin\Debug\log4net.dll]. (.NET Runtime [4.0.30319.1] on Microsoft Windows NT 6.1.7600.0)
log4net: DefaultRepositorySelector: defaultRepositoryType [log4net.Repository.Hierarchy.Hierarchy]
log4net: DefaultRepositorySelector: Creating repository for assembly [MyCompany.Framework, Version=2.1.72.0, Culture=neutral, PublicKeyToken=null]
log4net: DefaultRepositorySelector: Assembly [MyCompany.Framework, Version=2.1.72.0, Culture=neutral, PublicKeyToken=null] Loaded From [D:\Data\Projects\Active\Clients\MyProject\src\MyProject.Importer\bin\Debug\MyCompany.Framework.dll]
log4net: DefaultRepositorySelector: Assembly [MyCompany.Framework, Version=2.1.72.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net: DefaultRepositorySelector: Assembly [MyCompany.Framework, Version=2.1.72.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net: DefaultRepositorySelector: Creating repository [log4net-default-repository] using type [log4net.Repository.Hierarchy.Hierarchy]
The thread 'vshost.RunParkingWindow' (0xd30) has exited with code 0 (0x0).
The thread '<No Name>' (0x15d0) has exited with code 0 (0x0).
log4net: Hierarchy: Shutdown called on Hierarchy [log4net-default-repository]

Log4net 加载，但似乎没有处理我的配置文件。当我在程序初始化期间注释掉 AssemblyInfo.cs 中的属性并运行以下代码时，它按预期工作：

var log4netConfig = "Log4net.config";
var log4netInfo = new FileInfo(log4netConfig);
log4net.Config.XmlConfigurator.ConfigureAndWatch(log4netInfo);

我做错了什么？我想从 AssemblyInfo.cs 加载。

Answer 1

我对这种提升 log4net 的方法也有问题。 documentation 表示您必须在应用程序启动的早期进行调用

如果您使用配置属性，您必须调用 log4net 以允许它读取属性。对 LogManager.GetLogger 的简单调用将导致调用程序集上的属性被读取和处理。 因此，必须在应用程序启动期间尽早进行日志记录调用，并且肯定是在加载和调用任何外部程序集之前。

尝试将记录器放置在启动应用程序的同一类中（program.cs、app.xaml 等）。例如

private static readonly ILog Log = LogManager.GetLogger(typeof(Program));

并且对于踢，对日志进行任何调用（即使是从附加过程中过滤或评估的日志，它也应该强制 log4net 评估您的存储库/层次结构）。

static Program()
{
    Log.Debug("Application loaded.");
}

Answer 2

我终于找到了简单的解决方案，你可以在那里得到帮助

1. 启动函数中的 Global.asax

    protected void Application_Start()
    {
      log4net.Config.XmlConfigurator.Configure();
    }
   

2. 在类级别使用日志记录的任何类中

添加命名空间

using log4net;

在类级别添加此代码行

private static readonly ILog log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

1. 在任何动作调用中使用日志功能

   log.Error("test error q111..");
   

2. 配置

   <configuration>
   <configSections>
   <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net " />
   </configSection>
   <log4net debug="true">
   
   <!--AdoNet appender is use for write log file into sql server-->
   <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
     <bufferSize value="1" />
     <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
     <connectionString value="Data Source=DESKTOP-NLH31FH; Initial Catalog=SmallBizDb;Integrated Security=true" providerName="System.Data.SqlClient" />
     <commandText value="INSERT INTO [dbo].[Logs] ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@logdate,@thread, @loglevel, @logger, @message, @exception)" />
     <parameter>
       <parameterName value="@logdate" />
       <dbType value="DateTime" />
       <layout type="log4net.Layout.RawTimeStampLayout" />
     </parameter>
     <parameter>
       <parameterName value="@thread" />
       <dbType value="String" />
       <size value="255" />
       <layout type="log4net.Layout.PatternLayout">
         <conversionPattern value="%thread" />
       </layout>
     </parameter>
     <parameter>
       <parameterName value="@loglevel" />
       <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="255" />
       <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>
   </appender>
   <!--Add appender which you want to use, You can add more then one appender . Like if you want save log both plain text or sql server ,Add both appender.-->
   
   <root>
     <level value="Debug" />
     <!--<appender-ref ref="RollingLogFileAppender" />-->
     <!--Enable this line if you want write log file into plain text file-->
     <appender-ref ref="AdoNetAppender" />
     <!--Enable this line if you want write log file into sql server-->
   
   </root>
   
   </log4net>
   
   <appSettings>
   <add key="log4net.Internal.Debug" value="true"/>
   </appSettings>
   </configuration>
   

它可以帮助所有人并且易于使用。谢谢

Answer 3

我确实在 Application_Start() 内的 Global.asax.cs 中保留了 log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config"))); ...所以我不需要到处携带命令。

Answer 4

我通过将RepositoryAttribute 添加到有问题的程序集的 AssemblyInfo.cs 文件来解决此问题。

[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
[assembly: RepositoryAttribute("Your.Namespace.Here")]

Answer 5

我正在使用 Web.Config 部分来配置 Logger 并手动记录事件，从 global.asax 引导 Logger

static ILog logger = LogManager.GetLogger(<LoggerName>);

protected void Application_Start()
{
   log4net.Config.XmlConfigurator.Configure(); 
}

尝试从 global.asax 引导它

Answer 6

我正在使用带有 Windows 服务的 log4Net。我尝试了其他答案中提到的所有可能选项。

对我来说，服务的另一个实例还活着，我不得不从任务管理器中杀死它。之后，问题就解决了。

Answer 7

var log4NetPath = Server.MapPath("~/log4net.config");

FileInfo fileInfo = new FileInfo(log4NetPath);

XmlConfigurator.ConfigureAndWatch(fileInfo);