使用log4net连接Mysql数据库配置

log4net配置：

//Author:GaoBingBing
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

必备的组件：

              1.log4net.dll

              2.MySql.Data.dll

log4net.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <!-- Author:GaoBingBing-->
  <configSections>
    <section  name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
  </configSections>

  <log4net>

    <!--写入到数据库-->
    <appender name="ADONetAppender_DbServer" type="log4net.Appender.AdoNetAppender">
      <!--错误队列数据达到5个才持久化到数据库-->
      <bufferSize value="1" />
      <param name="ConnectionType" value="MySql.Data.MySqlClient.MySqlConnection, MySql.Data"/>
      <param name="ConnectionString" value="Server= 127.0.0.1;UID=root;PWD=root;DataBase=logs;Max Pool Size=1000"/>
      <commandText value="INSERT INTO log(Date,Thread,Level,Logger,Message) VALUES (@log_date, @thread, @log_level, @logger, @message)"/>
      <parameter>
        <parameterName value="@log_date"/>
        <dbType value="DateTime"/>

        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}" />
        </layout>
        <!-- <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>
    </appender>
    <root>
      <level value="ALL"/>
      <appender-ref ref="ADONetAppender_DbServer"/>

    </root>
    <!-- Specify the level for some specific categories -->
    <logger name="iNotes">
      <!-- <appender-ref ref="B" /> -->
      <level value="ALL"/>
      <appender-ref ref="ADONetAppender_DbServer"/>

    </logger>


  </log4net>
</configuration>

辅助类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

//Author:GaoBingBing

public class Log
{

    //获取实例
    private static log4net.ILog myLogger = log4net.LogManager.GetLogger(Log4NetConfig.DBServer);

    //错误级别:Info
    public static void Info(Exception ex, string message)
    {
        myLogger.Info(AppendMessage(ex, message));
    }
    //错误级别:Debug
    public static void Debug(Exception ex, string message)
    {
        myLogger.Debug(AppendMessage(ex, message));
    }
    //错误级别:Warn
    public static void Warn(Exception ex, string message)
    {
        myLogger.Warn(AppendMessage(ex, message));
    }
    //错误级别:Fatal
    public static void Fatal(Exception ex, string message)
    {
        myLogger.Fatal(AppendMessage(ex, message));
    }
    //错误级别:Error
    public static void Error(Exception ex, string message)
    {
        myLogger.Error(AppendMessage(ex, message));
    }
    //拼接错误信息
    private static string AppendMessage(Exception ex, string message)
    {

        return "自定义错误信息：" + message + "。系统错误信息:" + ex.Message + ",发生时间：" +
               DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
    }
}

//Author:GaoBingBing
public class Log4NetConfig
{
    public static string DBServer = "ADONetAppender_DbServer";
    public static string File = "FileAppender";
}

就可以直接使用了!