<?xml version="1.0" encoding="utf-8"?><configuration>  <configSections>    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />  </configSections>  <!--Log4net Begin-->  <log4net>    <root>      <!--控制級(jí)別，由低到高: all|debug|info|warn|error|fatal|off-->      <level value="All"/>      <appender-ref ref="rollinglogfileappender" />      <appender-ref ref="consoleappender" />      <appender-ref ref="adonetappender_MySQL"/>    </root>    <!--<logger name="LogWriter">      <level value="ALL"/>      <appender-ref ref="ADONetAppender"/>      <appender-ref ref="RollingLogFileAppender" />    </logger>-->    <appender name="AdoNetAppender_MySql" type="log4net.Appender.ADONetAppender">      <bufferSize value="1" />      <connectionType value="MySql.Data.MySqlClient.MySqlConnection, MySql.Data" />      <connectionString value="server=172.16.13.165;user id=microask;pwd=123456;port=3306;pooling=True;database=microask2" PRoviderName="MySql.Data.MySqlClient;" />      <commandText value=" INSERT INTO t_system_log (Date1,Thread,Level,Logger,Message,Exception) VALUES (@Date1, @Thread, @Level, @Logger, @Message, @Exception)" />      <parameter>        <parameterName value="@Date1" />        <dbType value="String" />        <layout type="log4net.Layout.RawTimeStampLayout" />      </parameter>      <parameter>        <parameterName value="@Thread" />        <dbType value="String" />        <size value="100" />        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="%thread" />        </layout>      </parameter>      <parameter>        <parameterName value="@Level" />        <dbType value="String" />        <size value="100" />        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="%level" />        </layout>      </parameter>      <parameter>        <parameterName value="@Logger" />        <dbType value="String" />        <size value="100" />        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="%logger" />        </layout>      </parameter>      <parameter>        <parameterName value="@Message" />        <dbType value="String" />        <size value="1000" />        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="%message" />        </layout>      </parameter>      <parameter>        <parameterName value="@Exception" />        <dbType value="String" />        <size value="4000" />        <layout type="log4net.Layout.ExceptionLayout" />      </parameter>    </appender>    <!-- setup the root category, add the appenders and set the default level -->    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">      <param name="File" value="Log//后臺(tái)log.txt" />      <param name="AppendToFile" value="true" />      <param name="RollingStyle" value="Date" />      <param name="DatePattern" value="yyyyMMdd" />      <param name="StaticLogFileName" value="true" />      <layout type="log4net.Layout.PatternLayout,log4net">        <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />        <param name="Header" value="-----------------------header--------------------------" />        <param name="Footer" value="-----------------------footer--------------------------" />      </layout>    </appender>    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">      <layout type="log4net.Layout.PatternLayout">        <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />      </layout>    </appender>    <!-- Setup the root category, add the appenders and set the default level -->  </log4net>  <!--Log4net End--></configuration>