log4net 使用与配置 每天一份log文件

1.下载 或 在nuget安装 log4net



2. web.config (app.config)

<configuration>   <configSections> <section name="log4net"           type="log4net.Config.Log4NetConfigurationSectionHandler,         log4net" /> </configSections> <log4net>        <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">    <file type="log4net.Util.PatternString" value="C:\m1\eDASLog\%date{dd.MM.yyyy}.txt" />    <appendToFile value="true" />    <rollingStyle value="Date" />    <datePattern value="yyyyMMdd" />    <layout type="log4net.Layout.PatternLayout">        <conversionPattern value="[[%date]] - %message %newline" />    </layout></appender><root><level value="DEBUG"/><appender-ref ref="RollingLogFileAppender"/></root>    </log4net></configuration>

为了每天一份log文件，做这个配置（文件节点类型为PatternString）：

<file type="log4net.Util.PatternString" value="C:\m1\eDASLog\%date{dd.MM.yyyy}.txt" />

3. 应用配置，在Application_Start(对于web 应用)中configure()：

  log4net.Config.XmlConfigurator.Configure();

4.做一个简单的wrapper来使用：

 public static class EdasLogger    {        private static log4net.ILog Log { get; set; }        static EdasLogger()        {            Log = log4net.LogManager.GetLogger(typeof(Logger));                    }        public static void Error(object msg)        {            Log.Error(msg);        }        public static void Error(object msg, Exception ex)        {            Log.Error(msg, ex);        }        public static void Error(Exception ex)        {            Log.Error(ex.Message, ex);        }        public static void Info(object msg)        {            Log.Info(msg);        }    }