Log4net日志记录组件的使用步骤详解和下载

第一步：

添加并应用Log4net.dll。然后在Web.config文件中添加下面的配置局

<configSections>

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

</configSections>

第二步：
新建Log4Net.config的配置文件，并在其中添加下面的配置信息：

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

<log4net debug="false">
  <!--按日期分割日志文件 一天一个-->

  <appender name="LogFileAppenderByDate" type="log4net.Appender.RollingFileAppender" >
    <!--是否续写-->

    <param name="AppendToFile" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"true" />

    <!--最小锁定模型以允许多个进程可以写入同一个文件-->

    <param name="LockingModel" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"log4net.Appender.FileAppender.MinimalLock" />

    <param name="StaticLogFileName" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"true" />

    <!--保存路径-->

    <param name="File" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"d:\Log\\" />

    <param name="DatePattern" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"yyyy-MM-dd.LOG" />

    <param name="StaticLogFileName" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"false" />

    <param name="RollingStyle" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"Date" />

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

      <param name="ConversionPattern" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"时间:%d %n级别:%level %n类名:%c%n文件:%F 第%L行%n日志内容:%m%n-----------------------------------------%n%n" />

    </layout>

  </appender>
  <!--按日志容量分割日志文件 10KB一个-->

  <appender name="LogFileAppenderBySize" type="log4net.Appender.RollingFileAppender" >

    <!--是否续写-->

    <param name="AppendToFile" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"true" />

    <!--最小锁定模型以允许多个进程可以写入同一个文件-->

    <param name="LockingModel" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"log4net.Appender.FileAppender.MinimalLock" />
    <param name="StaticLogFileName" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"true" />

    <!--按照文件的大小进行变换日志文件-->

    <param name="RollingStyle" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"Size" />

    <param name="File" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"log.txt" />

    <!--单个文件最大数量 好像只有在 按Size分割时有效-->

    <param name="MaximumFileSize" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"200KB"/>

    <!--保留的log文件数量 超过此数量后 自动删除之前的   好像只有在 按Size分割时有效-->

    <param name="MaxSizeRollBackups" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"2" />
    <param name="StaticLogFileName" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"false" />

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

      <param name="ConversionPattern" value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"发生时间:%d %n事件级别:%level %n相关类名:%c%n程序文件:%F 第%L行%n日志内容:%m%n-----------------------------------------%n%n" />

    </layout>

  </appender>
  <!--记录日志到数据库-->

  <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">

    <bufferSize value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"1" />

    <!--缓冲大小-->

    <connectionType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />

    <connectionString value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"Data Source=.\SQLEXPRESS;Initial Catalog=CVDS;User ID=sa;Password=sasa" />

    <commandText value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"INSERT INTO Log([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@log_date" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"DateTime" />

      <layout type="log4net.Layout.RawTimeStampLayout" />

    </parameter>

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@thread" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"String" />

      <size value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"255" />

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

        <conversionPattern value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"%thread" />

      </layout>

    </parameter>

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@log_level" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"String" />

      <size value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"50" />

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

        <conversionPattern value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"%level" />

      </layout>

    </parameter>

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@logger" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"String" />

      <size value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"255" />

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

        <conversionPattern value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"%logger" />

      </layout>

    </parameter>

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@message" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"String" />

      <size value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"4000" />

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

        <conversionPattern value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"%message" />

      </layout>

    </parameter>

    <parameter>

      <parameterName value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"@exception" />

      <dbType value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"String" />

      <size value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"2000" />

      <layout type="log4net.Layout.ExceptionLayout" />

    </parameter>

  </appender>
  <root>

    <level value=http://www.cnblogs.com/huanghai223/archive/2012/02/21/"INFO" />

    <!--启用按日期分割-->

    <appender-ref ref="LogFileAppenderByDate" />

    <!--启用按容量分割-->

    <!--<appender-ref ref="LogFileAppenderBySize" />-->

    <!--启用保存到数据库-->

    <!--<appender-ref ref="AdoNetAppender" />-->

  </root>
</log4net>

第三步：

在Global.asax文件中的Application_Start事件中添加如下代码：

protected void Application_Start(object sender, EventArgs e)

  {

       // Code that runs on application startup

      log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(Server.MapPath("Log4Net.config")));  

  }

第四步：调用LOG4net 写日志

protected void Button2_Click(object sender, EventArgs e)

        {

                     ILog logs = LogManager.GetLogger(typeof(TEST));
           logs.Fatal("Excption:这里就是要提示的LOG信息");

        }

也可以通过写一个LogHelper.cs类进行封装：

using System;

using System.Collections.Generic;

using System.Web;

using log4net;
namespace SBIT.Web.Class

{

    /// <summary>

    /// 日志辅助类

    /// </summary>

    public class LogHelper

    {

        private static ILog log;

        private static LogHelper logHelper = null;

        /// <summary>

        /// 初始化

        /// </summary>

        /// <returns></returns>

        public static ILog GetInstance()

        {

            logHelper = new LogHelper(null);
            return log;

        }

        /// <summary>

        /// 初始化

        /// </summary>

        /// <param name="configPath"></param>

        /// <returns></returns>

        public static ILog GetInstance(string configPath)

        {

            logHelper = new LogHelper(configPath);
            return log;

        }

        /// <summary>

        /// 构造函数

        /// </summary>

        /// <param name="configPath"></param>

        private LogHelper(string configPath)

        {

            if (!string.IsNullOrEmpty(configPath))

            {

                log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

                log4net.Config.XmlConfigurator.Configure(new System.IO.FileInfo(configPath));

            }

            else

            {

                log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

            }

        }
    }

}

通过封装类写日志的方法如下

private static readonly ILog logs = LogHelper.GetInstance(); //LogManager.GetLogger(typeof(TEST));

        protected void Button2_Click(object sender, EventArgs e)

        {

                logs.Fatal("Excption:这里就是要提示的LOG信息");

        }

Log4net下载地址：http://xiazai.jb51.net/tools/201302/tools/log4net-1.2.11-src.zip