log4net

1. 引用log4net.dll
2. AssemblyInfo.cs文件添加：[assembly: log4net.Config.XmlConfigurator(ConfigFile = "configs/log4net.config", Watch = true)](log4net配置文件单独放置)
3. Global全局文件中添加：log4net.Config.XmlConfigurator.Configure();
4. web.config中添加log4net节点

   1. <configSections>　　  
      　　<section name="log4net" allowLocation="true" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />　
      </configSections>

5. log4net.config文件（例如：）

   <?xml version="1.0" encoding="utf-8"?>
   <configuration>
     
     <configSections>
       <section name="log4net" allowLocation="true" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
     </configSections>
     
     <log4net>
       
       <root>
         <level value="DEBUG" />
         <appender-ref ref="RollingLogFileAppender" />
       </root>
       <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
         <param name="File" value="log/log-"/>
         <param name="AppendToFile" value="true"/>
         <param name="MaxSizeRollBackups" value="10"/>
         <param name="MaximumFileSize" value="10MB"/>
         <param name="StaticLogFileName" value="false"/>
         <param name="DatePattern" value="yyyyMMdd&quot;.log&quot;"/>
         <param name="RollingStyle" value="Date"/>
         <layout type="log4net.Layout.PatternLayout">
           <param name="ConversionPattern" value="%d  [%t]  %-5p  %c  [%x]  -  %m%n"/>
         </layout>
       </appender>   
     </log4net>
   </configuration>