WinForm 中 Log4net 配置写不同文件

以下配置了二种写文件，第一种根据日期写文件yyyyMMdd.txt，第二种是写固定文件login.txt。

1， 下载Log4net组件：http://logging.apache.org/log4net/download.html

2，将log4net.dll加到项目引用中；

3，在app.config中添加相关配置信息，文件内容如下：

<?xml version="1.0"?><configuration>  <configSections>    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">      <section name="ChinaBank.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>    </sectionGroup>    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net-net-1.0"/>  </configSections>  <log4net>    <logger name="Daily.Logging">      <level value="INFO"/>      <appender-ref ref="DailyAppender" />    </logger>    <logger name="Login.Logging">      <level value="INFO"/>      <appender-ref ref="LoginAppender" />    </logger>    <appender name="DailyAppender" type="log4net.Appender.RollingFileAppender,log4net" >      <param name="File" value="Logs/" />      <param name="AppendToFile" value="true" />      <param name="RollingStyle" value="Date" />      <param name="DatePattern" value="yyyyMMdd.'txt'" />      <param name="StaticLogFileName" value="false" />      <layout type="log4net.Layout.PatternLayout,log4net">        <param name="ConversionPattern" value="%m%n" />      </layout>    </appender>    <appender name="LoginAppender" type="log4net.Appender.RollingFileAppender,log4net" >      <param name="File" value="Logs/login.txt" />      <param name="AppendToFile" value="true" />      <layout type="log4net.Layout.PatternLayout,log4net">        <param name="ConversionPattern" value="%d|%m|%n" />      </layout>    </appender>  </log4net><!--这里为appSettings等其它节点信息--></configuration>

4，指定log4net使用.config文件来读取配置信息，有几种方法

(1) 在AssemblyInfo.cs最下面添加(其中XXXXX.exe.config为app.config在bin\Debug中生成的文件名，以实际为准)：

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "./XXXXX.exe.config", ConfigFileExtension = "config", Watch = true)]

(2)在需要写日志的类的命名空间上面加加[assembly: log4net.Config.XmlConfigurator(Watch = true)]。

或者在包含Main()的类中即Program.cs的命名空间上面加[assembly: log4net.Config.XmlConfigurator(Watch = true)]，例如

using System;using System.Collections.Generic;using System.Linq;using System.Text;using log4net;[assembly: log4net.Config.XmlConfigurator(Watch = true)]namespace Common{    public class Log    {        private static ILog logError = LogManager.GetLogger("Error.Logging");        private static ILog logDaily = LogManager.GetLogger("Daily.Logging");        private Log()        {        }               public static void Error(LogType logType, string format, params object[] args)        {            logError.ErrorFormat(logType.ToString() + "|"                + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "|"                + format, args);        }        public static void Info(LogType logType, string format, params object[] args)        {            logDaily.InfoFormat(logType.ToString() + "|"                + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "|"                + format, args);        }    }}

5，在项目中使用Log4net：

//根据日期写文件yyyyMMdd.txt
log4net.ILog log = log4net.LogManager.GetLogger("Daily.Logging");  
log.Info("这是一条普通信息");   
//写固定文件login.txt
log4net.ILog log2 = log4net.LogManager.GetLogger("Login.Logging");

log2.Info("用户张三登录");

备注：

以上是WinForm的配置，WebForm配置也一样，只是换成web.config。