log4net封装类

封装说明:

　　1.使用静态方法调用即可写入日志。

　　2.在日志信息写入之前，定义委托处理日志信息，便于记录日志信息之前，显示给用户。

　　3.添加代码配置Log4net，避免应用程序总是携带配置文件。如果需要使用配置文件，即可在AssemblyInfo.cs添加

    [assembly: log4net.Config.XmlConfigurator(ConfigFile = "log.xml", Watch = false)]

展开代码


using  System;
using  System.Data;
using  System.Text;
using  log4net;
using  log4net.Appender;
using  log4net.Config;
using  log4net.Layout;
using  log4net.Repository.Hierarchy;

namespace  Chen.Common
{
    public  class  Log4NetHelp
    {
        #region 变量定义
        //定义信息的二次处理
        public  static  event  Action< string > OutputMessage;
        //ILog对象
        private  static  readonly  ILog log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        //记录异常日志数据库连接字符串
        private  const  string  _ConnectionString =  @"data source=your server;initial catalog=your db;integrated security=false;persist security info=True;User ID=sa;Password=1111" ;
        //信息模板
        private  const  string  _ConversionPattern =  "%n【记录时间】%date%n【描述】%message%n" ;
        #endregion

        #region 定义信息二次处理方式
        private  static  void  HandMessage( object  Msg)
        {
            if  (OutputMessage !=  null )
            {
                OutputMessage(Msg.ToString());
            }
        }
        private  static  void  HandMessage( object  Msg, Exception ex)
        {
            if  (OutputMessage !=  null )
            {
                OutputMessage( string .Format( "{0}:{1}" , Msg.ToString(), ex.ToString()));
            }
        }
        private  static  void  HandMessage( string  format,  params  object [] args)
        {
            if  (OutputMessage !=  null )
            {
                OutputMessage( string .Format(format, args));
            }
        }
        #endregion

        #region 封装Log4net
        public  static  void  Debug( object  message)
        {
            HandMessage(message);
            if  (log.IsDebugEnabled)
            {
                log.Debug(message);
            }
        }
        public  static  void  Debug( object  message, Exception ex)
        {
            HandMessage(message, ex);
            if  (log.IsDebugEnabled)
            {
                log.Debug(message, ex);
            }
        }
        public  static  void  DebugFormat( string  format,  params  object [] args)
        {
            HandMessage(format, args);
            if  (log.IsDebugEnabled)
            {
                log.DebugFormat(format, args);
            }
        }
        public  static  void  Error( object  message)
        {
            HandMessage(message);
            if  (log.IsErrorEnabled)
            {
                log.Error(message);
            }
        }
        public  static  void  Error( object  message, Exception ex)
        {
            HandMessage(message, ex);
            if  (log.IsErrorEnabled)
            {
                log.Error(message, ex);
            }
        }
        public  static  void  ErrorFormat( string  format,  params  object [] args)
        {
            HandMessage(format, args);
            if  (log.IsErrorEnabled)
            {
                log.ErrorFormat(format, args);
            }
        }
        public  static  void  Fatal( object  message)
        {
            HandMessage(message);
            if  (log.IsFatalEnabled)
            {
                log.Fatal(message);
            }
        }
        public  static  void  Fatal( object  message, Exception ex)
        {
            HandMessage(message, ex);
            if  (log.IsFatalEnabled)
            {
                log.Fatal(message, ex);
            }
        }
        public  static  void  FatalFormat( string  format,  params  object [] args)
        {
            HandMessage(format, args);
            if  (log.IsFatalEnabled)
            {
                log.FatalFormat(format, args);
            }
        }
        public  static  void  Info( object  message)
        {
            HandMessage(message);
            if  (log.IsInfoEnabled)
            {
                log.Info(message);
            }
        }
        public  static  void  Info( object  message, Exception ex)
        {
            HandMessage(message, ex);
            if  (log.IsInfoEnabled)
            {
                log.Info(message, ex);
            }
        }
        public  static  void  InfoFormat( string  format,  params  object [] args)
        {
            HandMessage(format, args);
            if  (log.IsInfoEnabled)
            {
                log.InfoFormat(format, args);
            }
        }
        public  static  void  Warn( object  message)
        {
            HandMessage(message);
            if  (log.IsWarnEnabled)
            {
                log.Warn(message);
            }
        }
        public  static  void  Warn( object  message, Exception ex)
        {
            HandMessage(message, ex);
            if  (log.IsWarnEnabled)
            {
                log.Warn(message, ex);
            }
        }
        public  static  void  WarnFormat( string  format,  params  object [] args)
        {
            HandMessage(format, args);
            if  (log.IsWarnEnabled)
            {
                log.WarnFormat(format, args);
            }
        }
        #endregion

        #region 手动加载配置
        public  static  void  LoadADONetAppender()
        {
            Hierarchy hier = LogManager.GetLoggerRepository()  as  log4net.Repository.Hierarchy.Hierarchy;
            if  (hier !=  null )
            {
                log4net.Appender.AdoNetAppender appender =  new  log4net.Appender.AdoNetAppender();
                appender.Name =  "AdoNetAppender" ;
                appender.CommandType = CommandType.Text;
                appender.BufferSize = 1;
                appender.ConnectionType =  "System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" ;
                appender.ConnectionString = _ConnectionString;
                appender.CommandText =  @"INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" ;
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@log_date" , DbType = System.Data.DbType.DateTime, Layout =  new  log4net.Layout.RawTimeStampLayout() });
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@thread" , DbType = System.Data.DbType.String, Size = 255, Layout =  new  Layout2RawLayoutAdapter( new  PatternLayout( "%thread" )) });
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@log_level" , DbType = System.Data.DbType.String, Size = 50, Layout =  new  Layout2RawLayoutAdapter( new  PatternLayout( "%level" )) });
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@logger" , DbType = System.Data.DbType.String, Size = 255, Layout =  new  Layout2RawLayoutAdapter( new  PatternLayout( "%logger" )) });
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@message" , DbType = System.Data.DbType.String, Size = 4000, Layout =  new  Layout2RawLayoutAdapter( new  PatternLayout( "%message" )) });
                appender.AddParameter( new  AdoNetAppenderParameter { ParameterName =  "@exception" , DbType = System.Data.DbType.String, Size = 4000, Layout =  new  Layout2RawLayoutAdapter( new  ExceptionLayout()) });
                appender.ActivateOptions();
                BasicConfigurator.Configure(appender);
            }
        }

        public  static  void  LoadFileAppender()
        {
            FileAppender appender =  new  FileAppender();
            appender.Name =  "FileAppender" ;
            appender.File =  "error.log" ;
            appender.AppendToFile =  true ;

            PatternLayout patternLayout =  new  PatternLayout();
            patternLayout.ConversionPattern = _ConversionPattern;
            patternLayout.ActivateOptions();
            appender.Layout = patternLayout;

            //选择UTF8编码，确保中文不乱码。
            appender.Encoding = Encoding.UTF8;

            appender.ActivateOptions();
            BasicConfigurator.Configure(appender);

        }

        public  static  void  LoadRollingFileAppender()
        {
            RollingFileAppender appender =  new  RollingFileAppender();
            appender.AppendToFile =  true ;
            appender.Name =  "RollingFileAppender" ;
            appender.DatePattern =  "yyyy-MM-dd HH'时.log'" ;
            appender.File =  "Logs/" ;
            appender.AppendToFile =  true ;
            appender.RollingStyle = RollingFileAppender.RollingMode.Composite;
            appender.MaximumFileSize =  "500kb" ;
            appender.MaxSizeRollBackups = 10;
            appender.StaticLogFileName =  false ;


            PatternLayout patternLayout =  new  PatternLayout();
            patternLayout.ConversionPattern = _ConversionPattern;
            patternLayout.ActivateOptions();
            appender.Layout = patternLayout;

            //选择UTF8编码，确保中文不乱码。
            appender.Encoding = Encoding.UTF8;

            appender.ActivateOptions();
            BasicConfigurator.Configure(appender);
        }

        public  static  void  LoadConsoleAppender()
        {
            ConsoleAppender appender =  new  ConsoleAppender();
            appender.Name =  "ConsoleAppender" ;

            PatternLayout patternLayout =  new  PatternLayout();
            patternLayout.ConversionPattern = _ConversionPattern;
            patternLayout.ActivateOptions();
            appender.Layout = patternLayout;

            appender.ActivateOptions();
            BasicConfigurator.Configure(appender);
        }

        public  static  void  LoadTraceAppender()
        {
            TraceAppender appender =  new  TraceAppender();
            appender.Name =  "TraceAppender" ;

            PatternLayout patternLayout =  new  PatternLayout();
            patternLayout.ConversionPattern = _ConversionPattern;
            patternLayout.ActivateOptions();
            appender.Layout = patternLayout;

            appender.ActivateOptions();
            BasicConfigurator.Configure(appender);
        }

        public  static  void  LoadEventLogAppender()
        {
            EventLogAppender appender =  new  EventLogAppender();
            appender.Name =  "EventLogAppender" ;

            PatternLayout patternLayout =  new  PatternLayout();
            patternLayout.ConversionPattern = _ConversionPattern;
            patternLayout.ActivateOptions();
            appender.Layout = patternLayout;

            appender.ActivateOptions();
            BasicConfigurator.Configure(appender);
        }
        #endregion

        #region 定义常规应用程序中未处理的异常信息记录方式
        public  static  void  LoadUnhandledException()
        {
            AppDomain.CurrentDomain.UnhandledException +=  new  UnhandledExceptionEventHandler
 ((sender, e) =>
 {
     log.Fatal( "未处理的异常" , e.ExceptionObject  as  Exception);
 });
        }
        #endregion
    }
}

　

log.xml

"1.0"  encoding= "utf-8"  ?>


    "log4net"  type= "System.Configuration.IgnoreSectionHandler" />



    "SysAppender"  type= "log4net.Appender.RollingFileAppender" >

      "Logs/"  />

      "true" />
      "Composite" />