log4net使用简略

1.去http://logging.apache.org/，下载log4net

2.建立数据表
    CREATE TABLE [dbo].[Log] (
    [Id] [int] IDENTITY (1, 1) NOT NULL,
    [Date] [datetime] NOT NULL,
    [Thread] [varchar] (255) NOT NULL,
    [Level] [varchar] (50) NOT NULL,
    [Logger] [varchar] (255) NOT NULL,
    [Message] [varchar] (4000) NOT NULL,
    [Exception] [varchar] (2000) NULL
)

3.编写配置文件
   在<configuration>元素下添加
   <configSections>
 <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>

 <log4net>

        <root>
            <level value="ALL" />
            <appender-ref ref="ADONetAppender" />
        </root>

            <appender name="ADONetAppender" type="log4net.Appender.ADONetAppender">
            <bufferSize value="10" />
            <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
            <connectionString value="server=localhost;database=zero;user id=sa;password=sa" />
            <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
            <parameter>
                <parameterName value="@log_date" />
                <dbType value="DateTime" />
                <layout type="log4net.Layout.RawTimeStampLayout" />
            </parameter>
            <parameter>
                <parameterName value="@thread" />
                <dbType value="String" />
                <size value="255" />
                <layout type="log4net.Layout.PatternLayout">
                    <conversionPattern value="%thread" />
                </layout>
            </parameter>
            <parameter>
                <parameterName value="@log_level" />
                <dbType value="String" />
                <size value="50" />
                <layout type="log4net.Layout.PatternLayout">
                    <conversionPattern value="%level" />
                </layout>
            </parameter>
            <parameter>
                <parameterName value="@logger" />
                <dbType value="String" />
                <size value="255" />
                <layout type="log4net.Layout.PatternLayout">
                    <conversionPattern value="%logger" />
                </layout>
            </parameter>
            <parameter>
                <parameterName value="@message" />
                <dbType value="String" />
                <size value="4000" />
                <layout type="log4net.Layout.PatternLayout">
                    <conversionPattern value="%message" />
                </layout>
            </parameter>
            <parameter>
                <parameterName value="@exception" />
                <dbType value="String" />
                <size value="2000" />
                <layout type="log4net.Layout.ExceptionLayout" />
            </parameter>
        </appender>

    </log4net>

4.在Global.asax.cs中的Application_Start()方法中加上
   log4net.Config.DOMConfigurator.Configure();
(在1.2.10中上面的已过时,推荐使用log4net.Config.XmlConfigurator.Configure();)

5.编写一log类,此处采用Singleton模式(仅供参考)
   如:
      using System;

    namespace Log
    {
        /// <summary>
        /// MyLog 的摘要说明。
        /// </summary>
        public class MyLog
        {
            private static readonly log4net.ILog log = log4net.LogManager.GetLogger(typeof(MyLog));
            public static void LogInfo()
            {            
                log.Info("log日志");            
            }

            public static void LogError()
            {            
                log.Info("log错误");            
            }
        }
    }

6.在需要记录日志的时候,即可调用MyLog的静态方法.