Log4net 使用文档例子

 
一般我们都会使用数据库和文件作为log的输出介质,下面是我在项目实践中总结到的经验:
1  ．ADONetAppender 
（  1  ）、 MS SQL Server 
define the table such  as : 
CREATE TABLE [dbo].[Log] ( 
 [Id] [ int ] IDENTITY ( 1 ,  1 ) NOT NULL, 
 [Date] [datetime] NOT NULL, 
       [Thread] [varchar] ( 255 ) NOT NULL, 
       [Level] [varchar] ( 50 ) NOT NULL, 
       [Logger] [varchar] ( 255 ) NOT NULL, 
       [Message] [varchar] ( 4000 ) NOT NULL, 
       [Exception] [varchar] ( 2000 ) NULL 
) 

< appender name = " AdoNetAppender "  type = " log4net.Appender.AdoNetAppender " >  
        < bufferSize value = " 100 "   />  
        < connectionType value = " System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 "   />  
        < connectionString value = " data source=[database server];initial catalog=[database name];integrated security=false;persist security info=True;User ID=[user];Password=[password] "   />  
        < 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 >  
（  2  ）、 MS Access  please reference the SDK of Log4net document    
（  3  ）、 Oracle9i                                     log4net / release / config - examples.html 
（  4  ）、 Oracle8i 
（  5  ）、 DB2 

2  、 FileAppender 
< appender name = " FileAppender "  type = " log4net.Appender.FileAppender " >  
       < file value = " log-file.txt "   />  
      < appendToFile value = " true "   />  
      < layout type = " log4net.Layout.PatternLayout " >  
      < conversionPattern value = " %date [%thread] %-5level %logger [%property{NDC}] - %message%newline "   />  
</ layout >  
</ appender >  

4 ．  RemotingAppender 
传送日志事件到达一个特定的接受器，sink定义了这个接受器的地址，lossy定义了没有丢弃事件，bufferSize 定义了一个black的由95个事件打包发送的，而onlyFixPartialEventData可以忽律一些特定的事件。 
< appender name = " RemotingAppender "  type = " log4net.Appender.RemotingAppender "   >  
        < sink value = " tcp://localhost:8085/LoggingSink "   />  
        < lossy value = " false "   />  
        < bufferSize value = " 95 "   />  
       < onlyFixPartialEventData value = " true "   />  
</ appender >  

5 ．  RollingFileAppender 
由于定义了staticLogFileName 为true，以我的理解就是定位保存的log文件个数为10个(maxSizeRollBackups),同时设定了每个文件的大小为100KB，所以一直都保持有10个文件。RollingStyle设定rolling的触发器。 
Eg1: 
< appender name = " RollingFileAppender "  type = " log4net.Appender.RollingFileAppender " >  
      < file value = " log.txt "   />  
     < appendToFile value = " true "   />  
     < rollingStyle value = " Size "   />  
    < maxSizeRollBackups value = " 10 "   />  
    < maximumFileSize value = " 100KB "   />  
    < staticLogFileName value = " true "   />  
    < layout type = " log4net.Layout.PatternLayout " >  
    < conversionPattern value = " %date [%thread] %-5level %logger [%property{NDC}] - %message%newline "   />   </ layout >  
</ appender >  

  eg2: 
< appender name = " RollingLogFileAppender "  type = " log4net.Appender.RollingFileAppender " >  
        < file value = " logfile "   />  
        < appendToFile value = " true "   />  
        < rollingStyle value = " Date "   />  
        < datePattern value = " yyyyMMdd-HHmm "   />  
        < layout type = " log4net.Layout.PatternLayout " >  
               < conversionPattern value = " %date [%thread] %-5level %logger [%property{NDC}] - %message%newline "   />  
        </ layout >  
</ appender >  

eg3: 

< appender name = " RollingLogFileAppender "  type = " log4net.Appender.RollingFileAppender " >  
        < file value = " logfile "   />  
        < appendToFile value = " true "   />  
        < rollingStyle value = " Composite "   />  
        < datePattern value = " yyyyMMdd "   />  
        < maxSizeRollBackups value = " 10 "   />  
        < maximumFileSize value = " 1MB "   />  
        < layout type = " log4net.Layout.PatternLayout " >  
               < conversionPattern value = " %date [%thread] %-5level %logger [%property{NDC}] - %message%newline "   />  
       </ layout >  
</ appender >  

6 ．  UdpAppender 
可以发送到远程地址的特定端口 
< appender name = " UdpAppender "  type = " log4net.Appender.UdpAppender " >  
        < localPort value = " 8080 "   />  
        < remoteAddress value = " 224.0.0.1 "   />  
        < remotePort value = " 8080 "   />  
        < layout type = " log4net.Layout.PatternLayout, log4net " >  
               < conversionPattern value = " %-5level %logger [%property{NDC}] - %message%newline "   />  
        </ layout >  
</ appender >  
log4net 的学习暂时告一段落了,希望能够进一步对log4j学习,现在我越来越喜欢.net的东西了,再也不会感觉到很别扭 ! 希望自己可以很快地强大起来 !!!