1、设置启用参数:
web.config的 <appSettings>中
增加 <add key="log4net.Internal.Debug" value="true " />
2、设置启用路径:
web.config中增加如下配置
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add name="textWriteTraceListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="d:\log4net.txt" />
</listeners>
</trace>
</system.diagnostics>