日志结构

• https://developer.aliyun.com/article/50671
• https://www.cnblogs.com/feipeng8848/p/10329355.html
• https://www.cnblogs.com/anderslly/archive/2007/03/09/log4netconfigsamples.html
• https://www.cnblogs.com/xrainchen/articles/8335729.html
• https://www.cnblogs.com/gurenyumao/p/14265723.html
• https://logging.apache.org/log4net/release/features.html
• https://www.cnblogs.com/wyy1234/p/9403629.html
• https://www.cnblogs.com/wyy1234/p/9409479.html
• https://www.cnblogs.com/wyy1234/p/9439172.html