1.添加NuGet包:Microsoft.Extensions.Logging.Log4Net.AspNetCore和Log4Net.aspnetcore
2.配置Program类
3.添加配置文件
<?xml version="1.0" encoding="utf-8"?>
<log4net>
<appender name="DebugAppender" type="log4net.Appender.DebugAppender" >
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value=