log4net 配置文件不放在web.config中及细节解析

引用log4net.dll

1：log处理类--------LogBLL.cs文件

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// LogBLL 的摘要说明
/// </summary>
public class LogBLL
{
    public static void debug(string message)
    {
        log4net.ILog log = log4net.LogManager.GetLogger("Test");
        if (log.IsDebugEnabled)
        {
            log.Debug(message);
        }
        log = null;
    }
    public static void error(string message)
    {
        log4net.ILog log = log4net.LogManager.GetLogger("Test");
        if (log.IsErrorEnabled)
        {
            log.Error(message);
        }
        log = null;
    }
    public static void fatal(string message)
    {

        log4net.ILog log = log4net.LogManager.GetLogger("Test");
        if (log.IsFatalEnabled)
        {
            log.Fatal(message);
        }
        log = null;
    }
    public static void info(string message)
    {
        log4net.ILog log = log4net.LogManager.GetLogger("Test");
        if (log.IsInfoEnabled)
        {
            log.Info(message);
        }
        log = null;
    }

    public static void warn(string message)
    {
        log4net.ILog log = log4net.LogManager.GetLogger("Test");
        if (log.IsWarnEnabled)
        {
            log.Warn(message);
        }
        log = null;
    }
}

2：Global.asax文件中加入

void Application_Start(object sender, EventArgs e)
    {
        // 在应用程序启动时运行的代码
       log4net.Config.XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo(Server.MapPath("~")+@"\log4net.config"));

    }

3：放在根目录下（其他目录也可以，需修改Global.asax中文件位置）log4net.config文件

<?xml version="1.0" encoding="utf-8" ?>
  <configuration>
   <configSections>
   <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
   </configSections>
   <log4net>
   <root>
   <!--
   <level value="ALL" />
   <appender-ref ref="rootFile" />
   -->
   </root>
   <logger name="Test">
   <level value="ERROR" />
   <appender-ref ref="rollingFile" />
   </logger>
   <appender name="rollingFile" type="log4net.Appender.RollingFileAppender,log4net" >
   <param name="File" type="" value="log/" />
   <param name="AppendToFile" value="true" />
   <param name="RollingStyle" value="Date" />
   <param name="DatePattern" value="yyyyMMdd.TXT" />
<!--后缀为*.txt时,例:AX.txt_2008-07-24.PxP  应该是程序上的一个bug--> 
<!--后缀为*.TXT时,例:AX.txt_2008-07-25.TXT-->

   <param name="StaticLogFileName" value="false" />
   <layout type="log4net.Layout.PatternLayout,log4net">
   <param name="ConversionPattern" value="%n%d [%t] %-5p %c - %m%n" />
   <param name="Header" value=" ----------------------header-------------- " />
   <param name="Footer" value=" ----------------------footer-------------- " />
   </layout>
   </appender>
   </log4net>
  </configuration>

4：页面文件中使用

public partial class CrCb : System.Web.UI.Page
{
log4net.ILog log = log4net.LogManager.GetLogger("Test");
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            CallBack();
        }
    } 
      private void CallBack()
    {
        try
        {}
        catch(Exception ex)
        {
            LogBLL.error(ex.Message);
        }
    }

以上就是log4net的使用。