log4net 写日志到 Sql server 数据库

    本示例采用vs2010,原代码下载 /Files/zycblog/log4netDB.rar

1  新建数据库表MyLog ,脚本为

1  CREATE   TABLE   [ dbo ] . [ Log ] (
2       [ Id ]   [ int ]   IDENTITY ( 1 , 1 )  NOT   NULL ,
3       [ Date ]   [ datetime ]   NOT   NULL ,
4       [ Thread ]   [ varchar ] ( 255 )  NOT   NULL ,
5       [ Level ]   [ varchar ] ( 50 )  NOT   NULL ,
6       [ Logger ]   [ varchar ] ( 255 )  NOT   NULL ,
7       [ Message ]   [ varchar ] ( 4000 )  NOT   NULL ,
8       [ Exception ]   [ varchar ] ( 2000 )  NULL
9  )  ON   [ PRIMARY ]

 

 2 在项目AssemblyInfo.cs文件里新增一行

[assembly: log4net.Config.XmlConfiguratorAttribute(Watch  =   true )]

 

3 在项目config文件里新增如下节

 

< configSections >
     < section  name ="log4net"  type ="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
   </ configSections >
      < log4net  debug ="false" >
        < appender  name ="LogFileAppender"  type ="log4net.Appender.FileAppender"   >
         < param  name ="File"  value ="c:\Log\DBLog.txt"   />
         < param  name ="AppendToFile"  value ="true"   />
         < layout  type ="log4net.Layout.PatternLayout" >
           < param  name ="ConversionPattern"  value ="%d [%t] %-5p %c [%x] - %m%n"   />
         </ layout >
       </ appender >
    
     < appender  name ="ADONetAppender"  type ="log4net.Appender.ADONetAppender" >
       < bufferSize  value ="10" />
       < connectionType  value ="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
       < connectionString  value ="server=192.168.1.100;database=ZYC;user id=sa;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 >
        < root >
          < level  value ="DEBUG"   />
          < appender-ref  ref ="ADONetAppender"   />
        </ root >

其中

        <root>

         <level value="DEBUG" />

         <appender-ref ref="ADONetAppender" />

       </root>

节的appender-ref 是ADONetAppender，对应上面的配置是连接到数据库，俱体内容看config文件就可以知道连接串，及对应数据库表信息参数

 

4 测试代码为

 private static readonly log4net.ILog log = log4net.LogManager.GetLogger(typeof(MyLog));

      public static void LogInfo()

        {

            log.Info("log日¨?志?");

        }

    至此log信息就新增到数据库了

 

注意事项 

       引用log4net.dll

       引用System.Data.dll