簡單快速學會配置 log4net

使用log4net-1.2.0-beta8

1>在項目的AssemblyInfo.cs檔案中設定。。。這一步如果忘了就監視不到記錄檔了

[assembly: log4net.Config.DOMConfiguratorAttribute(Watch=true)]
或者
[assembly: log4net.Config.XmlConfigurator(Watch = true)]

2>添加並編輯項目設定檔（預設為App.config），內容如下：

內容一：

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

<configSections>

<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>

</configSections>

<log4net>

<appender name="stdout" type="log4net.Appender.ConsoleAppender" >

<layout type="log4net.Layout.PatternLayout">

<!--conversionPattern value="[%d %l] %n%m%n" /-->

<param name="ConversionPattern" value="[%d %l] %m%n" />

</layout>

</appender>

<appender name="file" type="log4net.Appender.FileAppender">

<param name="File" value="log.txt" />

<param name="AppendToFile" value="true" />

<layout type="log4net.Layout.PatternLayout">

<param name="ConversionPattern" value="[%d %l] %m%n" />

</layout>

</appender>

<root>

<level value="ALL" />

<appender-ref ref="stdout" />

<appender-ref ref="file" />

</root>

<logger name="*">

<level value="ALL" />

<appender-ref ref="stdout" />

<appender-ref ref="file" />

</logger>

</log4net>

</configuration>

【或者內容二：】

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>

  <log4net debug="false">
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/OperationLog.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <datePattern value="yyyyMMdd'.txt'" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss}% %-5level %message%newline"/>
      </layout>
    </appender>
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingLogFileAppender" />
    </root>
  </log4net>
</configuration>

（內容二可以直接複製後使用）

程式碼中使用如下語句

...

using log4net;

using log4net.Config;

...

private static ILog log = LogManager.GetLogger(typeof(TestClass));

...

log.Info("This is a test!");