Log4net的配置

最近在做.NET的项目，今天闲暇无事，特将log4net的配置整理一下，下面是关于log4net的相关配置：

1.用户先从网上下载log4net.dll文件，将其包含在工程的引用文件中。

2.在app.config中添加以下配置：

<configSections>

    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net-net-1.2"/>
  </configSections>
  <log4net>
    <!-- Define some output appenders -->
    <appender name="RollingLogFileAppender" type=" log4net.Appender.RollingFileAppender">
      <file value="log/his_log.txt" />
      <appendToFile value="true" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="10MB" />
      <rollingStyle value="Size" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <header value="[Header] " />
        <footer value="[Footer] " />
        <conversionPattern value="%date [%thread] %-5level %logger [%ndc] - %message%newline" />
      </layout>
    </appender>
    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <file value="log/log-file.txt" />
      <!-- Example using environment variables in params -->
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <!-- <file value="${TMP}/log-file.txt" /> -->
      <appendToFile value="true" />
      <!-- An alternate output encoding can be specified -->
      <!-- <encoding value="unicodeFFFE" /> -->
      <layout type="log4net.Layout.PatternLayout">
        <header value="[Header] " />
        <footer value="[Footer] " />
        <conversionPattern value="%date [%thread] %-5level %logger [%ndc] <%property{auth}> - %message%newline" />
      </layout>
      <!-- Alternate layout using XML  
      <layout type="log4net.Layout.XMLLayout" /> -->
    </appender>
    <appender name="ConsoleAppender" type=" log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%ndc] <%property{auth}> - %message%newline" />
      </layout>
    </appender>

    <!-- Setup the root category, add the appenders and set the default level -->
    <root>
      <level value="All" />
      <!--<appender-ref ref="LogFileAppender" />-->
      <appender-ref ref="ConsoleAppender" />
      <appender-ref ref="RollingLogFileAppender" />
      <!-- <appender-ref ref="ADONetAppender_SqlServer" /> -->
      <!--<appender-ref ref="NetSendAppender" />-->
      <!-- <appender-ref ref="A" /> -->
    </root>
    <!-- Specify the level for some specific categories -->
    <!--
  <logger name="Test.SimpleClass">
   <level value="ERROR" />
   <appender-ref ref="RollingLogFileAppender" />
  </logger>
   -->
  </log4net>

3.虽然app.config中的配置已经完成，但是此时log还不能正确的输出，还需要在工程的AssemblyInfo.vb文件中添加<Assembly: log4net.Config.xmlConfigurator()>

以上完成后，log就可以正常输出了。^.^

4.由于项目采用clickonce安装客户端，因此将前端的log保存在当前登录用户的Local Settings/Temp下。

要实现其功能只需将file value设为：<file value="${TMP}/log-file.txt" />，log4net会读取PC的环境变量中TMP的值。

注：  <maxSizeRollBackups value="10" />设定保存文件的个数

        <maximumFileSize value="10MB" />设定每个文件的大小