Log4Net学习笔记(1)-完整的例子

一、开发环境

编译器：VS2013

.Net版本：4.5

二、开发流程

1.从nuget上获取log4net

2.配置log4net的配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  
  <configSections>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler" />
  </configSections>

  <log4net debug="false">
    <root>
      <level value="ALL"/>
      <appender-ref ref="UserLogAppender"/>
      <appender-ref ref="SystemLogAppender"/>
    </root>
    <!--信息日志-->
    <appender name="UserLogAppender" type="log4net.Appender.RollingFileAppender,log4net">
      <!--日志路径-->
      <file value="./Log/"/>
      <!--日志名格式：20151113_user.log-->
      <param name="DatePattern" value="yyyyMMdd&quot;_user.log&quot;"/>
      <!--是否是向文件中追加日志-->
      <param name="AppendToFile" value="true"/>
      <!--log保留天数-->
      <param name="MaxSizeRollBackups" value="10"/>
      <!--log最大文件大小-->
      <param name="MaximumFileSize" value="5MB"/>
      <!--日志文件名是否固定不变的-->
      <param name="StaticLogFileName" value="false"/>
      <!--日志根据XX滚动-->
      <param name="RollingStyle" value="Composite"/>
      <!--布局-->
      <layout type="log4net.Layout.PatternLayout,log4net">
        <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n"/>
        <param name="Header" value=""/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="INFO"/>
        <param name="LevelMax" value="INFO"/>
      </filter>
    </appender>
    <!--警告,注意,通知,错误日志-->
    <appender name="SystemLogAppender" type="log4net.Appender.RollingFileAppender,log4net">
      <file value="./Log/"/>
      <param name="File" value="Loglog_sys.log" />
      <param name="DatePattern" value="yyyyMMdd&quot;_sys.log&quot;"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite"/>
      <param name="MaxSizeRollBackups" value="10"/>
      <param name="MaximumFileSize" value="5MB"/>
      <param name="StaticLogFileName" value="false"/>
      <layout type="log4net.Layout.PatternLayout,log4net">
        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss}%newline%message%n"/>
        <param name="Header" value=""/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="ERROR"/>
        <param name="LevelMax" value="ErrOR"/>
      </filter>
    </appender>
  </log4net>

</configuration>

3.在AssembInfo.cs中添加信息

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

4.控制台程序

namespace Demo.Log4Net
{
    class Program
    {
        static void Main(string[] args)
        {
            ILog log = LogManager.GetLogger(typeof(LogHelper));
            log.Info("info");
            log.Error("error");

            Console.ReadKey();
        }
    }
}