log4net详细配置 转

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
  </configSections>
  <log4net>
    <!--MS SQL Server-->
    <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>
    
    <!--MS Access-->
    <appender name="AdoNetAppender_Access" type="log4net.Appender.AdoNetAppender">
      <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\log\access.mdb;User Id=;Password=;" />
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message]) VALUES (@log_date, @thread, @log_level, @logger, @message)" />
      <parameter>
        <parameterName value="@log_date" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date" />
        </layout>
      </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="1024" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    
    
    <!--Oracle9i-->
    <appender name="AdoNetAppender_Oracle" type="log4net.Appender.AdoNetAppender">
      <connectionType value="System.Data.OracleClient.OracleConnection, System.Data.OracleClient, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      <connectionString value="data source=[mydatabase];User ID=[user];Password=[password]" />
      <commandText value="INSERT INTO Log (Datetime,Thread,Log_Level,Logger,Message) VALUES (:log_date, :thread, :log_level, :logger, :message)" />
      <bufferSize value="128" />
      <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>
    </appender>
    
    
    
    <!--IBM DB2-->
    <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="IBM.Data.DB2.DB2Connection,IBM.Data.DB2, Version=8.1.2.1" />
      <connectionString value="server=192.168.0.0;database=dbuser;user Id=username;password=password;persist security info=true" />
      <commandText value="INSERT INTO myschema.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="500" />
        <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>
    
    
    <!--SQLite-->
    <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="Finisar.SQLite.SQLiteConnection, SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c" />
      <connectionString value="Data Source=c:\\inetpub\\wwwroot\\logs\\log4net.db;Version=3;" />
      <commandText value="INSERT INTO Log (Date, Level, Logger, Message) VALUES (@Date, @Level, @Logger, @Message)" />
      <parameter>
        <parameterName value="@Date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@Level" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Logger" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Message" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    
    
    <!--AspNetTraceAppender-->
    <appender name="AspNetTraceAppender" type="log4net.Appender.AspNetTraceAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--BufferingForwardingAppender-->
    <!--<appender name="BufferingForwardingAppender" type="log4net.Appender.BufferingForwardingAppender" >
      <bufferSize value="100"/>
      <appender-ref ref="ConsoleAppender" />
    </appender>-->
    <appender name="BufferingForwardingAppender" type="log4net.Appender.BufferingForwardingAppender" >
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <appender-ref ref="ConsoleAppender" />
    </appender>
    
    
    <!--ColoredConsoleAppender-->
    <!--<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="White" />
        <backColor value="Red, HighIntensity" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="White" />
        <backColor value="Red, HighIntensity" />
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <backColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    
    <!--ConsoleAppender-->
    <!--<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <target value="Console.Error" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    
    
    
    
    <!--EventLogAppender-->
    <!--<appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
      <applicationName value="MyApp" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--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>
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="${TMP}\log-file.txt" />
      <appendToFile value="true" />
      <encoding value="unicodeFFFE" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="${TMP}\log-file.txt" />
      <appendToFile value="true" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--ForwardingAppender-->
    <appender name="ForwardingAppender" type="log4net.Appender.ForwardingAppender" >
      <threshold value="WARN"/>
      <appender-ref ref="ConsoleAppender" />
    </appender>
    
    
    <!--MemoryAppender-->
    <appender name="MemoryAppender" type="log4net.Appender.MemoryAppender">
      <onlyFixPartialEventData value="true" />
    </appender>
    
    
    <!--NetSendAppender-->
    <appender name="MemoryAppender" type="log4net.Appender.MemoryAppender">
      <onlyFixPartialEventData value="true" />
    </appender>
    
    
    <!--NetSendAppender-->
    <appender name="NetSendAppender" type="log4net.Appender.NetSendAppender">
      <threshold value="ERROR" />
      <server value="SQUARE" />
      <recipient value="nicko" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--OutputDebugStringAppender-->
    <appender name="OutputDebugStringAppender" type="log4net.Appender.OutputDebugStringAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--RemotingAppender-->
    <!--<appender name="RemotingAppender" type="log4net.Appender.RemotingAppender" >
      <sink value="tcp://localhost:8085/LoggingSink" />
      <lossy value="false" />
      <bufferSize value="95" />
      <onlyFixPartialEventData value="true" />
    </appender>-->
    <appender name="RemotingAppender" type="log4net.Appender.RemotingAppender" >
      <sink value="tcp://localhost:8085/LoggingSink" />
      <lossy value="true" />
      <bufferSize value="200" />
      <onlyFixPartialEventData value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="ERROR"/>
      </evaluator>
    </appender>
    
    
    
    <!--RollingFileAppender-->
    <!--<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>
    <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>
    <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>-->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logfile.txt" />
      <appendToFile value="false" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="-1" />
      <maximumFileSize value="50GB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--SmtpAppender-->
    <!--<appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>
    <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>-->
    <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender,log4net">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="false" />
      <evaluator type="log4net.Core.LevelEvaluator,log4net">
        <threshold value="WARN" />
      </evaluator>
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%property{log4net:HostName} :: %level :: %message %newlineLogger: %logger%newlineThread: %thread%newlineDate: %date%newlineNDC: %property{NDC}%newline%newline" />
      </layout>
    </appender>
    
    
    <!--SmtpPickupDirAppender-->
    <appender name="SmtpPickupDirAppender" type="log4net.Appender.SmtpPickupDirAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <pickupDir value="C:\SmtpPickup" />
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>
    
    
    <!--TraceAppender-->
    <appender name="TraceAppender" type="log4net.Appender.TraceAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--UdpAppender-->
    <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>
</configuration>

Log4Net 日志基本

Log4net 分为如下几个级别：

FATAL  毁灭级别

ERROR 错误级别

WARN 警告级别

INFO 消息级别

DEBUG 调试级别

      这几种日志级别 FATAL> ERROR> WARN> INFO>DEBUG

      只有日志输出级别大于或等于配置的级别才能输出日志信息

      比如我的日志配置级别为INFO

      那么只有log.Info（） log.Warn（）log.Error() log.Fatal（）才能输出日志信息，Debug方式就不能输出。

       Log4net中还有两种特殊的配置级别: ALL 允许所有的日志级别输出 OFF 拒绝所有的日志级别输出

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
  </configSections>
  <log4net>
    <!--MS SQL Server-->
    <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>
    
    <!--MS Access-->
    <appender name="AdoNetAppender_Access" type="log4net.Appender.AdoNetAppender">
      <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\log\access.mdb;User Id=;Password=;" />
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message]) VALUES (@log_date, @thread, @log_level, @logger, @message)" />
      <parameter>
        <parameterName value="@log_date" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date" />
        </layout>
      </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="1024" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    
    
    <!--Oracle9i-->
    <appender name="AdoNetAppender_Oracle" type="log4net.Appender.AdoNetAppender">
      <connectionType value="System.Data.OracleClient.OracleConnection, System.Data.OracleClient, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      <connectionString value="data source=[mydatabase];User ID=[user];Password=[password]" />
      <commandText value="INSERT INTO Log (Datetime,Thread,Log_Level,Logger,Message) VALUES (:log_date, :thread, :log_level, :logger, :message)" />
      <bufferSize value="128" />
      <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>
    </appender>
    
    
    
    <!--IBM DB2-->
    <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="IBM.Data.DB2.DB2Connection,IBM.Data.DB2, Version=8.1.2.1" />
      <connectionString value="server=192.168.0.0;database=dbuser;user Id=username;password=password;persist security info=true" />
      <commandText value="INSERT INTO myschema.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="500" />
        <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>
    
    
    <!--SQLite-->
    <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="Finisar.SQLite.SQLiteConnection, SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c" />
      <connectionString value="Data Source=c:\\inetpub\\wwwroot\\logs\\log4net.db;Version=3;" />
      <commandText value="INSERT INTO Log (Date, Level, Logger, Message) VALUES (@Date, @Level, @Logger, @Message)" />
      <parameter>
        <parameterName value="@Date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@Level" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Logger" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Message" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    
    
    <!--AspNetTraceAppender-->
    <appender name="AspNetTraceAppender" type="log4net.Appender.AspNetTraceAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--BufferingForwardingAppender-->
    <!--<appender name="BufferingForwardingAppender" type="log4net.Appender.BufferingForwardingAppender" >
      <bufferSize value="100"/>
      <appender-ref ref="ConsoleAppender" />
    </appender>-->
    <appender name="BufferingForwardingAppender" type="log4net.Appender.BufferingForwardingAppender" >
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <appender-ref ref="ConsoleAppender" />
    </appender>
    
    
    <!--ColoredConsoleAppender-->
    <!--<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="White" />
        <backColor value="Red, HighIntensity" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="White" />
        <backColor value="Red, HighIntensity" />
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <backColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    
    <!--ConsoleAppender-->
    <!--<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <target value="Console.Error" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    
    
    
    
    <!--EventLogAppender-->
    <!--<appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
      <applicationName value="MyApp" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--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>
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="${TMP}\log-file.txt" />
      <appendToFile value="true" />
      <encoding value="unicodeFFFE" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="${TMP}\log-file.txt" />
      <appendToFile value="true" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--ForwardingAppender-->
    <appender name="ForwardingAppender" type="log4net.Appender.ForwardingAppender" >
      <threshold value="WARN"/>
      <appender-ref ref="ConsoleAppender" />
    </appender>
    
    
    <!--MemoryAppender-->
    <appender name="MemoryAppender" type="log4net.Appender.MemoryAppender">
      <onlyFixPartialEventData value="true" />
    </appender>
    
    
    <!--NetSendAppender-->
    <appender name="MemoryAppender" type="log4net.Appender.MemoryAppender">
      <onlyFixPartialEventData value="true" />
    </appender>
    
    
    <!--NetSendAppender-->
    <appender name="NetSendAppender" type="log4net.Appender.NetSendAppender">
      <threshold value="ERROR" />
      <server value="SQUARE" />
      <recipient value="nicko" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--OutputDebugStringAppender-->
    <appender name="OutputDebugStringAppender" type="log4net.Appender.OutputDebugStringAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--RemotingAppender-->
    <!--<appender name="RemotingAppender" type="log4net.Appender.RemotingAppender" >
      <sink value="tcp://localhost:8085/LoggingSink" />
      <lossy value="false" />
      <bufferSize value="95" />
      <onlyFixPartialEventData value="true" />
    </appender>-->
    <appender name="RemotingAppender" type="log4net.Appender.RemotingAppender" >
      <sink value="tcp://localhost:8085/LoggingSink" />
      <lossy value="true" />
      <bufferSize value="200" />
      <onlyFixPartialEventData value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="ERROR"/>
      </evaluator>
    </appender>
    
    
    
    <!--RollingFileAppender-->
    <!--<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>
    <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>
    <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>-->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logfile.txt" />
      <appendToFile value="false" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="-1" />
      <maximumFileSize value="50GB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--SmtpAppender-->
    <!--<appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>
    <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>-->
    <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender,log4net">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <smtpHost value="SMTPServer.domain.com" />
      <bufferSize value="512" />
      <lossy value="false" />
      <evaluator type="log4net.Core.LevelEvaluator,log4net">
        <threshold value="WARN" />
      </evaluator>
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%property{log4net:HostName} :: %level :: %message %newlineLogger: %logger%newlineThread: %thread%newlineDate: %date%newlineNDC: %property{NDC}%newline%newline" />
      </layout>
    </appender>
    
    
    <!--SmtpPickupDirAppender-->
    <appender name="SmtpPickupDirAppender" type="log4net.Appender.SmtpPickupDirAppender">
      <to value="to@domain.com" />
      <from value="from@domain.com" />
      <subject value="test logging message" />
      <pickupDir value="C:\SmtpPickup" />
      <bufferSize value="512" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator">
        <threshold value="WARN"/>
      </evaluator>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline%newline%newline" />
      </layout>
    </appender>
    
    
    <!--TraceAppender-->
    <appender name="TraceAppender" type="log4net.Appender.TraceAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    
    
    <!--UdpAppender-->
    <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>
</configuration>

Log4Net 日志基本

Log4net 分为如下几个级别：

FATAL  毁灭级别

ERROR 错误级别

WARN 警告级别

INFO 消息级别

DEBUG 调试级别

      这几种日志级别 FATAL> ERROR> WARN> INFO>DEBUG

      只有日志输出级别大于或等于配置的级别才能输出日志信息

      比如我的日志配置级别为INFO

      那么只有log.Info（） log.Warn（）log.Error() log.Fatal（）才能输出日志信息，Debug方式就不能输出。

       Log4net中还有两种特殊的配置级别: ALL 允许所有的日志级别输出 OFF 拒绝所有的日志级别输出