log4net 配置使用

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
  </configSections>
  <appSettings>
  </appSettings>
  <log4net>
    <!--定义输出到文件中-->
    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <!--定义文件存放位置-->
      <file value="./log/log.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <datePattern value="yyyyMMdd-HH:mm:ss" />
      <layout type="log4net.Layout.PatternLayout">
        <!--每条日志末尾的文字说明-->
        <footer value="by lcz" />
        <!--输出格式-->
        <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
        <conversionPattern value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 出错类：%logger property:[%property{NDC}] - 错误描述：%message%newline" />
      </layout>
    </appender>
    <!--定义输出到控制台命令行中-->
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <!--定义输出到windows事件中-->
    <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <!--定义输出到数据库中，这里举例输出到Access数据库中，数据库为C盘的log4net.mdb-->
    <appender name="AdoNetAppender_Access" type="log4net.Appender.AdoNetAppender">
      <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:log4net.mdb" />
      <commandText value="INSERT INTO LogDetails ([LogDate],[Thread],[Level],[Logger],[Message]) VALUES (@logDate, @thread, @logLevel, @logger,@message)" />
      <!--定义各个参数-->
      <parameter>
        <parameterName value="@logDate" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logLevel" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    <!--定义日志的输出媒介，下面定义日志以四种方式输出。也可以下面的按照一种类型或其他类型输出。-->
    <root>
      <!--文件形式记录日志-->
      <appender-ref ref="LogFileAppender" />
      <!--控制台控制显示日志-->
      <appender-ref ref="ConsoleAppender" />
      <!--Windows事件日志-->
      <appender-ref ref="EventLogAppender" />
      <!-- 如果不启用相应的日志记录，可以通过这种方式注释掉
      <appender-ref ref="AdoNetAppender_Access" />
      -->
    </root>

  </log4net>
</configuration>

调用代码1、

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using log4net;
[assembly: log4net.Config.XmlConfigurator(Watch = true)]
namespace yichangDEMO {
 class LogHelper {

  public static readonly ILog loginfo = log4net.LogManager.GetLogger("EventLogAppender"); //选择输出到windows事件中
  
  public static void SetConfig() {
   log4net.Config.XmlConfigurator.Configure();
  }

  public static void SetConfig(FileInfo configFile) {
   log4net.Config.XmlConfigurator.Configure(configFile);
  }

  public static void WriteLog(string info) {
   if (loginfo.IsInfoEnabled) {
    loginfo.Info(info);
   }
  }

  public static void WriteLog(string info, Exception se) {

   if (loginfo.IsErrorEnabled) {
    loginfo.Error(info, se);
   }
  }
 }
}

调用代码2、

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace yichangDEMO {

 static class Program {
  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main() {
   Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
   AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
   Application.EnableVisualStyles();
   Application.SetCompatibleTextRenderingDefault(false);
   Application.Run(new Form1());
  }
  static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e) {
   Exception ex = e.Exception;
   LogHelper.WriteLog("错误：", ex);
  }
  static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) {
   Exception ex = (Exception)e.ExceptionObject;
   LogHelper.WriteLog("错误：", ex);
  }
 }
}

这里同上偏随笔结合使用

已验证

原文链接http://blog.csdn.net/zhoufoxcn/article/details/2220533