Log4Net组件的应用详解
第一步：
添加并应用Log4net.dll。然后在Web.config文件中添加下面的配置局
<configSections>
<section name= " log4net " type= " log4net.Config.Log4NetConfigurationSectionHandler, log4net " />
</configSections>
第二步：
新建Log4Net.config的配置文件，并在其中添加下面的配置信息：
<?xml version= " 1.0 " encoding= " UTF-8 " ?>
<log4net debug= " false " >
<!--按日期分割日志文件 一天一个-->
<appender name= " LogFileAppenderByDate " type= " log4net.Appender.RollingFileAppender " >
<!--是否续写-->
<param name= " AppendToFile " value= " true " />
<!--最小锁定模型以允许多个进程可以写入同一个文件-->
<param name= " LockingModel " value= " log4net.Appender.FileAppender.MinimalLock " />
<param name= " StaticLogFileName " value= " true " />
<!--保存路径-->
<param name= " File " value= " d:\Log\\ " />
<param name= " DatePattern " value= " yyyy-MM-dd.LOG " />
<param name= " StaticLogFileName " value= " false " />
<param name= " RollingStyle " value= " Date " />
<layout type= " log4net.Layout.PatternLayout " >
<param name= " ConversionPattern " value= " 时间:%d %n级别:%level %n类名:%c%n文件:%F 第%L行%n日志内容:%m%n-----------------------------------------%n%n " />
</layout>
</appender>
<!--按日志容量分割日志文件 10KB一个-->
<appender name= " LogFileAppenderBySize " type= " log4net.Appender.RollingFileAppender " >
<!--是否续写-->
<param name= " AppendToFile " value= " true " />
<!--最小锁定模型以允许多个进程可以写入同一个文件-->
<param name= " LockingModel " value= " log4net.Appender.FileAppender.MinimalLock " />
<param name= " StaticLogFileName " value= " true " />
<!--按照文件的大小进行变换日志文件-->
<param name= " RollingStyle " value= " Size " />
<param name= " File " value= " log.txt " />
<!--单个文件最大数量 好像只有在 按Size分割时有效-->
<param name= " MaximumFileSize " value= " 200KB " />
<!--保留的log文件数量 超过此数量后 自动删除之前的 好像只有在 按Size分割时有效-->
<param name= " MaxSizeRollBackups " value= " 2 " />
<param name= " StaticLogFileName " value= " false " />
<layout type= " log4net.Layout.PatternLayout " >
<param name= " ConversionPattern " value= " 发生时间:%d %n事件级别:%level %n相关类名:%c%n程序文件:%F 第%L行%n日志内容:%m%n-----------------------------------------%n%n " />
</layout>
</appender>
<!--记录日志到数据库-->
<appender name= " AdoNetAppender " type= " log4net.Appender.AdoNetAppender " >
<bufferSize value= " 1 " />
<!--缓冲大小-->
<connectionType value= " System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 " />
<connectionString value= " Data Source=.\SQLEXPRESS;Initial Catalog=CVDS;User ID=sa;Password=sasa " />
<commandText value= " INSERT INTO Log([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception) " />
<parameter>
<parameterName value= " @log_date " />
<dbType value= " DateTime " />
<layout type= " log4net.Layout.RawTimeStampLayout " />
</parameter>
<parameter>
<parameterName value= " @thread " />
<dbType value= " String " />
<size value= " 255 " />
<layout type= " log4net.Layout.PatternLayout " >
<conversionPattern value= " %thread " />
</layout>
</parameter>
<parameter>
<parameterName value= " @log_level " />
<dbType value= " String " />
<size value= " 50 " />
<layout type= " log4net.Layout.PatternLayout " >
<conversionPattern value= " %level " />
</layout>
</parameter>
<parameter>
<parameterName value= " @logger " />
<dbType value= " String " />
<size value= " 255 " />
<layout type= " log4net.Layout.PatternLayout " >
<conversionPattern value= " %logger " />
</layout>
</parameter>
<parameter>
<parameterName value= " @message " />
<dbType value= " String " />
<size value= " 4000 " />
<layout type= " log4net.Layout.PatternLayout " >
<conversionPattern value= " %message " />
</layout>
</parameter>
<parameter>
<parameterName value= " @exception " />
<dbType value= " String " />
<size value= " 2000 " />
<layout type= " log4net.Layout.ExceptionLayout " />
</parameter>
</appender>
<root>
<level value= " INFO " />
<!--启用按日期分割-->
<appender- ref ref = " LogFileAppenderByDate " />
<!--启用按容量分割-->
<!--<appender- ref ref = " LogFileAppenderBySize " />-->
<!--启用保存到数据库-->
<!--<appender- ref ref = " AdoNetAppender " />-->
</root>
</log4net>
第三步：
在Global.asax文件中的Application_Start事件中添加如下代码：
protected void Application_Start( object sender, EventArgs e)
{
// Code that runs on application startup
log4net.Config.XmlConfigurator.ConfigureAndWatch( new FileInfo(Server.MapPath( " Log4Net.config " )));
}
第四步：调用LOG4net 写日志
protected void Button2_Click( object sender, EventArgs e)
{
ILog logs = LogManager.GetLogger( typeof (TEST));
logs.Fatal( " Excption:这里就是要提示的LOG信息 " );
}
也可以通过写一个LogHelper.cs类进行封装：
using System;
using System.Collections.Generic;
using System.Web;
using log4net;
namespace SBIT.Web.Class
{
/// <summary>
/// 日志辅助类
/// </summary>
public class LogHelper
{
private static ILog log;
private static LogHelper logHelper = null ;
/// <summary>
/// 初始化
/// </summary>
/// <returns></returns>
public static ILog GetInstance()
{
logHelper = new LogHelper( null );
return log;
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="configPath"></param>
/// <returns></returns>
public static ILog GetInstance( string configPath)
{
logHelper = new LogHelper(configPath);
return log;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="configPath"></param>
private LogHelper( string configPath)
{
if (! string .IsNullOrEmpty(configPath))
{
log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
log4net.Config.XmlConfigurator.Configure( new System.IO.FileInfo(configPath));
}
else
{
log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
}
}
}
}
通过封装类写日志的方法如下：
private static readonly ILog logs = LogHelper.GetInstance(); // LogManager.GetLogger(typeof(TEST));
protected void Button2_Click( object sender, EventArgs e)
{
logs.Fatal( " Excption:这里就是要提示的LOG信息 " );
}
代码下载如下：
/Files/huanghai223/ReportProject_web.rar
作者： Leo_wl
出处： http://www.cnblogs.com/Leo_wl/
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