log4net的应用

1.下载log4net

2编写log4net的配置文件

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

<configuration>

  <configSections>

    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>

  </configSections>

  <appSettings>   </appSettings>

  <log4net debug="true">

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

      <param name="File" value="log//error_"/>

      <param name="AppendToFile" value="true"/>

      <param name="MaxSizeRollBackups" value="10"/>

      <param name="StaticLogFileName" value="false"/>

      <param name="DatePattern" value="yyyy-MM-dd".log""/>

      <param name="RollingStyle" value="Date"/>

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

        <param name="ConversionPattern" value="%d - %m%n"/>

      </layout>

    </appender>

    <root>

      <level value="DEBUG"/>

      <appender-ref ref="RollingLogFileAppender"/>

    </root>

  </log4net>

</configuration>

　　3编写帮助类

using log4net;

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Reflection;

using System.Text;

using System.Text.RegularExpressions;

using System.Threading.Tasks;

using System.Web;

namespace TestData.Common

{

    public static class HadleExcption

    {

        //判断是否是绝对路径

        public static bool IsPhysicalPath(string Path)

        {

            string RegexString = @"\b[a-z]:\\.*";

            MatchCollection Matchs = Regex.Matches(Path, RegexString, RegexOptions.IgnoreCase | RegexOptions.Compiled);

            if (Matchs.Count > 0)

                return true;

            return false;

        }

        public static void WriteLog(this Exception ex, string message)

        {

            string _path = "";

            if (!IsPhysicalPath("~/Config/lognet.config"))

                _path = HttpContext.Current.Server.MapPath("~/Config");

            else _path = "~/Config/lognet.config";

            FileInfo info = null;

            if (new DirectoryInfo(_path).Exists)

            {

                info = new FileInfo(_path + "/lognet.config");

            }

            log4net.Config.XmlConfigurator.ConfigureAndWatch(info);

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

            log.Info(message, ex);

        }

    }

}