C#: log4net

 1 <?xml version="1.0"?>
 2 <configuration>
 3   <configSections>
 4     <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
 5   </configSections>
 6   <log4net>
 7     <!--定义输出到文件中-->
 8     <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
 9       <!--定义文件存放位置-->
10       <file value="log\\"/>
11       <appendToFile value="true"/>
12       <rollingStyle value="Date"/>
13       <datePattern value="yyyy\\yyyyMM\\yyyyMMdd‘.txt‘"/>
14       <staticLogFileName value="false"/>
15       <param name="MaxSizeRollBackups" value="100"/>
16       <layout type="log4net.Layout.PatternLayout">
17         <!--每条日志末尾的文字说明-->
18         <!--输出格式-->
19         <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
20         <conversionPattern value="%newline %n记录时间：%date %n线程ID:[%thread] %n日志级别：  %-5level %n出错类：%logger property: [%property{NDC}] - %n错误描述：%message%newline %n"/>
21       </layout>
22     </appender>
23     <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
24       <layout type="log4net.Layout.PatternLayout">
25         <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
26       </layout>
27     </appender>
28     <root>
29       <!--文件形式记录日志-->
30       <appender-ref ref="RollingLogFileAppender"/>
31       <appender-ref ref="ConsoleAppender"/>
32     </root>
33   </log4net>
34 </configuration>

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using log4net;
 6 using System.Reflection;
 7 
 8 namespace Log4NetDemo
 9 {
10     class Program
11     {
12         static void Main(string[] args)
13         {
14             ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
15 
16             //LogHelper.WriteLog(typeof(Program), "hello world!!");
17             log.Error("error", new Exception("发生一个异常"));
18             log.Fatal("fatal", new Exception("发生了一个致命错误"));
19             log.Info("info");
20             log.Debug("debug");
21             log.Warn("warn");
22             Console.WriteLine("日志记录完毕");
23             Console.ReadLine();
24         }
25     }
26 }