IBatis.Net中提供了方便的日志处理，可以输出sql语句等调试信息。

常用的有两种：

1、输出到控制台：

<configSections>

<sectionGroup name="iBATIS">

<section name="logging" type="IBatisNet.Common.Logging.ConfigurationSectionHandler, IBatisNet.Common" />

</sectionGroup>

</configSections>

<iBATIS>

<logging>

<logFactoryAdapter type="IBatisNet.Common.Logging.Impl.TraceLoggerFA, IBatisNet.Common">

<arg key="showLogName" value="true" />

<arg key="showDataTime" value="true" />

<arg key="level" value="ALL" />

<arg key="dateTimeFormat" value="yyyy/MM/dd HH:mm:ss:SSS" />

</logFactoryAdapter>

</logging>

</iBATIS>

2、利用log4net输出到文件：

<configSections>

<sectionGroup name="iBATIS">

<section name="logging" type="IBatisNet.Common.Logging.ConfigurationSectionHandler, IBatisNet.Common" />

</sectionGroup>

<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />

</configSections>

<iBATIS>

<logging>

<logFactoryAdapter type="IBatisNet.Common.Logging.Impl.Log4NetLoggerFA, IBatisNet.Common.Logging.Log4Net">

<arg key="configType" value="inline" />

</logFactoryAdapter>

</logging>

</iBATIS>

<log4net>

<!-- Define some output appenders -->

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

<param name="File" value="f:\log.txt" />

<param name="AppendToFile" value="true" />

<param name="MaxSizeRollBackups" value="2" />

<param name="MaximumFileSize" value="100KB" />

<param name="RollingStyle" value="Size" />

<param name="StaticLogFileName" value="true" />

<layout type="log4net.Layout.PatternLayout">

<param name="Header" value="[Header]\r\n" />

<param name="Footer" value="[Footer]\r\n" />

<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" />

</layout>

</appender>

<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">

<layout type="log4net.Layout.PatternLayout">

<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] <%X{auth}> - %m%n" />

</layout>

</appender>

<!-- Set root logger level to ERROR and its appenders -->

<root>

<level value="DEBUG" />

<appender-ref ref="RollingLogFileAppender" />

<appender-ref ref="ConsoleAppender" />

</root>

<!-- Print only messages of level DEBUG or above in the packages -->

<logger name="IBatisNet.DataMapper.Configuration.Cache.CacheModel">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.DataMapper.Configuration.Statements.PreparedStatementFactory">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.DataMapper.LazyLoadList">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.DataAccess.DaoSession">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.DataMapper.SqlMapSession">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.Common.Transaction.TransactionScope">

<level value="DEBUG" />

</logger>

<logger name="IBatisNet.DataAccess.Configuration.DaoProxy">

<level value="DEBUG" />

</logger>

</log4net>