博文参考：
最简例子：https://blog.csdn.net/johnson_moon/article/details/77532583
Web中配置：https://blog.csdn.net/kity9420/article/details/81042580
配置SpringBoot+级别过滤：https://blog.csdn.net/duguxiaobiao/article/details/78988409
SpringBoot Profiles + Log4j2:https://blog.csdn.net/qq279862451/article/details/79174473
SpringBoot+详细标签解读：https://blog.csdn.net/inke88/article/details/75007649
encoder和Layout:https://blog.csdn.net/cw_hello1/article/details/51969554
Log4j配置：https://www.cnblogs.com/Ming8006/p/6170428.html