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  2. Log4net configuration from assembly attribute does not load configuration file

Log4net configuration from assembly attribute does not load configuration file

由 不问归期 提交于 2019-11-27 04:45:44

I also have trouble with this method of boostrapping log4net. The documentation says you have to make a call very early in your application startup

if you use configuration attributes you must invoke log4net to allow it to read the attributes. A simple call to LogManager.GetLogger will cause the attributes on the calling assembly to be read and processed. Therefore it is imperative to make a logging call as early as possible during the application start-up, and certainly before any external assemblies have been loaded and invoked.

Try placing a logger in the same class that starts your application (program.cs, app.xaml, whatever). For example

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

And for kicks, make any call to the log (even one that is filtered or evaluated out of the append process, it should force log4net to evaluate your repository/heirarchy).

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

finally i just find the simple solution, you may get help there

  1. Global.asax in start function 

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

  2. In any of the class where use logging at class level

add namespace

using log4net;

add this code line at class level

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

  1. use log function in any of the action call

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

  2. configuration

    <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>

it may help all and easy to use. thanks

I do keep log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config"))); in the Global.asax.cs inside of the Application_Start()... So I don't need to carry the command all over the places.

I fixed this by adding the RepositoryAttribute to the offending assembly's AssemblyInfo.cs file.

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

I am using Web.Config sections to configure Logger and manually log events, Bootstrapping Logger from global.asax

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

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

Try bootstrapping it from global.asax

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

FileInfo fileInfo = new FileInfo(log4NetPath);

XmlConfigurator.ConfigureAndWatch(fileInfo);
标签
log4net
log4net-configuration
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