使用 Log4Net 做日志

引入  Log4net  包

编写 LogHelper   类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

[assembly: log4net.Config.XmlConfigurator(Watch = true)]//一定要写
namespace TestLog4Net
{
   public  class LogHelper
    {
        /// <summary>
        /// 输出日志到Log4Net
        /// </summary>
        /// <param name="t"></param>
        /// <param name="ex"></param>
        #region static void WriteLog(Type t, Exception ex)

        public static void WriteLog(Type t, Exception ex)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error("Error", ex);
        }

        #endregion

        /// <summary>
        /// 输出日志到Log4Net
        /// </summary>
        /// <param name="t"></param>
        /// <param name="msg"></param>
        #region static void WriteLog(Type t, string msg)

        public static void WriteLog(Type t, string msg)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error(msg);
        }

        #endregion

         #endregion

         #region static void WriteLog(string t, Exception ex)

         public static void WriteLog(string t, Exception ex)
         {
             log4net.ILog log = log4net.LogManager.GetLogger(t);
             log.Error(ex);
         }

         #endregion

 

    }
}

在启动项目的配置文件里添加配置

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <log4net>
    <!--定义输出到文件中-->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <!--定义文件存放位置-->
      <file value="log\"/>
      <appendToFile value="true"/>
      <rollingStyle value="Date"/>
      <datePattern value="yyyy\yyyyMM\yyyyMMdd'.txt'"/>
      <staticLogFileName value="false"/>
      <param name="MaxSizeRollBackups" value="100"/>
      <layout type="log4net.Layout.PatternLayout">
        <!--每条日志末尾的文字说明-->
        <!--输出格式-->
        <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
        <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"/>
      </layout>
    </appender>
    <root>
      <level value="ERROR"/>
      <!--文件形式记录日志-->
      <appender-ref ref="RollingLogFileAppender"/>
    </root>
  </log4net>
</configuration>

引用时直接在事件处填写

 LogHelper.WriteLog(typeof(FormMain), "测试Log4Net日志是否写入");


即可


全局错误日志记录
将整个程序域中的错误记录下来
在Global 中添加

 protected void Application_Error(object sender, EventArgs e)
        {
            // 在出现未处理的错误时运行的代码
            Exception objExp = HttpContext.Current.Server.GetLastError();
            Log4netRecord.WriteLog("<br/><strong>客户机IP</strong>：" + Request.UserHostAddress + "<br /><strong>错误地址</strong>：" + Request.Url, objExp);
        }

学习于  http://www.cnblogs.com/wangsaiming/archive/2013/01/11/2856253.html