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：